RV Books

Australia has a different set of road rules for each state and jurisdiction. As a direct result, Australian Road Rules confuse drivers, cyclist and pedestrians. It would seem to make sense to have just one set of national towing rules.

The current (February 2018) Australian RV rules and regulations are outlined here by Collyn Rivers of RV Books. Those for trailers under 4500 kg will change in late 2018 but details are not yet available

If you can, take along someone who knows about caravans. Unlike cars, a well-made caravan may last for decades with only minor areas that need attention. Not all are like that, however. Buying used caravans – what to check shows what to look for when buying a used caravan.

To tow safely and legally in Australia, caravan & tow vehicle weight definitions are vital for you to know. Those shown here were valid as of June 2020. These definitions may change. New RV legislation is expected to be announced later this year. It is not, however, likely to be enforced until 2022 or 2023.

Caravan and motor home tyres take a far greater beating than those in general use – an industry report noted that such tyres are subject to major abuse greater than any other form of use. In particular, stated the report, caravan and motor home tyres are often grossly under-inflated and overloaded.

The complex interactions of caravan and tow vehicle dynamics described here by Collyn Rivers, is a semi-technical précis of his recently published Why Caravans Roll Over – and how to prevent that.

Caravan common sense can be fine but used about things technical it’s likely to be based on misleading opinions that contradict the basic laws of physics. Engineering utilises long proven knowledge. This may be (for example) about voltage drop along an electric cable. It may be about the deflection of a spring under load (Hooke’s Law). Or ...

Australia has two main and seemingly interdependent caravan industries. One makes caravans of varying stability. The other makes devices (of varying effectiveness) intended to increase that stability. Both are curious. Not all makers appear to understand the more basic laws of physics involved. Or perhaps assume immunity from them. So presumably do owners of ultra-long ...

That caravans roll-over yet most vehicles don’t show caravan dynamics is not understood or is ignored. Caravan dynamics simply explained tells why. The main cause is that hitch extending from the tow vehicle’s rear. It not only allows but causes both tow vehicle and caravan to sway (yaw). Worse – if one yaw’s clockwise it ...

Caravan facts and opinions are not the same. People confusing one for the other cause ongoing and major misunderstanding. This article explains how and why.

The current (February 2018) Australian RV rules and regulations are outlined here by Collyn Rivers of RV Books. Those for trailers under 4500 kg will change in late 2018 but details are not yet available

Caravan suspension has requirements that are very different from tow vehicles. This is only too often misunderstood. Here’s why and what it should be.

Caravan Tare Weight issues mainly arise about what’s included and what’s not. Water is not, nor may be optional extras. This article reveals all.

For safe towing, a caravan must be tow ball heavy. This article explains why and how to get caravan tow ball weight right.

The maximum caravan weight safe to tow depends on what tows it. This article by Collyn Rivers explains why – and how to know what it is.

A conventional caravan must always be a compromise. This is because it is towed via hitch at some distance behind the tow vehicle’s rear wheels. If that vehicle sways clockwise, that hitch overhang causes (not just permits) the caravan to sway anti-clockwise. If the caravan sways clockwise, it causes the tow vehicle to sway anticlockwise.  ...

When choosing a caravan tow vehicle there are key caravan towing specifications that you need to know. This article explains what they are and why they are vital.

Claims for dual-cab ute towing capacity mislead caravan buyers. That ute must weigh enough to keep a caravan steady. If not, the caravan tail wags the towing dog.

Do caravans need independent suspension is a marketing rather than an engineering issue. This article explains why caravan beam axles are generally better.

Updated May 2020Caravan Declared Mass A caravan’s Tare Mass is legally its weight when ‘ready for service’ as it leaves its maker. That weight, recorded on a Compliance plate is often incorrect. This article explains why RV Books states: Do Not Trust Caravan Declared Mass.Most caravan makers produce basic units. The weight of that basic unit ...

Fifth wheel caravans are safer than conventional caravans. They are fundamentally more stable on road and far less likely to overturn. Further, because up to two metres more is usable space, they provide that much more living area. They increasingly challenge caravan and motor home sales.

Fuel savers do not work. That actually being sold are franchises to defraud others. The ‘fuel saver’ is typically a useless pill (typically of camphor).

You can obtain gross combined mass upgrades for most SUVs. Depending on make and model, these add 300-500 kg. It makes sense to do this. Carrying that extra mass results in a safer ratio of laden tow vehicle weight to laden caravan weight.

What is the most suitable caravan layout for me? This article shows how to choose the best caravan layout to suit your individual needs.

Knowing how to locate mass correctly along the length of a caravan is vital. That applies both to its design and the owner’s loading. This article shows how to load a caravan safely – and why and how it matter doing so is vitally important.

Reversing a caravan is easy, but needs practice. This article will guide you through how to reverse a caravan if used in conjunction with doing it yourself.

Making caravans more stable is readily possible by design, loading, and tow vehicle use and choice. This article by Collyn Rivers explains how. It also provides practical guidelines for buying a caravan and tow vehicle, their loading and on-road usage. For a full technical explanation of why rigs can be unstable please see my Caravan and ...

The overhung hitch of a caravan tow vehicle can cause (not just permit) a caravan to sway. This sway annoys at low speed and is dangerous at high speed. Until recently attempts to limit such sway rely on friction to dampen and ideally prevent it. Unfortunately, mechanical sway-control has little value at speed.

Long end-heavy caravans have a need for a Weight Distributing Hitch (WDH). For all, though, it inherently reduces tow vehicle stability. Here’s how and why.

Conventional caravans are towed via an overhung hitch attached to the rear of the tow vehicle. This is an inherently unstable combination. A side force on a caravan causes swaying. Caravan swaying is undesirable. Furthermore, at speed, it is dangerous The longer caravan hitches overhang the worse the effect. It is undesirable at low levels. ...

Reducing caravan sway (yaw) necessitates minimising its causes – and only then adding devices promoted as reducing it. This article shows why and how.

On the surface, the Australian RV industry is healthy. But underneath all is far from well. A  great deal needs changing. There are lots to do. RV Books explains the RV industry changes needed.

Solar is now so cheap that the main limitation is the space available for the solar modules. It is not possible to have too much solar. Ample solar prolongs battery life. It also and ensures at least some output during overcast days. There is no risk of overcharging, nor overloading the associated solar regulator. That ...

Caravans and their tow vehicles have much the same accident rates as other forms of motor transport. Their main type of accident, jack-knifing and roll-over, however, are different. Here are ten tips for safe caravan towing.

A caravan heavier than its tow vehicle is like a dog with an overweight tail, it may sway so much its tow vehicle cannot control it. Swerving strongly at speed to avoid a head-on collision induce this. So too may a strong side wind gust. That wind may be natural or from a close passing truck. 

A weight distributing hitch is not needed if the laden weight of the tow vehicle is equal to or exceeds that of the laden caravan. Nor is a weight distributing hitch needed for any trailer under about 4 metres.

Ultra light caravans and fifth wheelers are rare, but feasible. Here’s how it is be done using hi-tech materials. One, over 9 metres, was under 2000 kg.

Tow ball weight pushes down the rear of the tow vehicle – thereby increasing the weight on its rear tyres. A WDH, in effect, is a semi-flexible springy beam that levers back up the rear of the tow vehicle and levers down its front. In doing so, however, it reduces the imposed load on the ...

Correct weight distribution hitch setting up compensates caravan tow vehicle front end lift but introduces instability if too tight. Here’s why.

Wheels falling off trailers, wheel studs breaking and wheel nuts loosening still happens. Here is why it happens, and how to prevent it. Wrecked wheel bearings and fractured stub axles are also common. That fastenings such as wheel nuts may be caused, not just permitted, to loosen is rarely covered in engineering training. The causes ...

Caravans towed by an overhung hitch sway and may overturn. Over 250 did so in the first six months of 2018. This article explains why caravans sway and roll over – and how to prevent it.

Air conditioning a caravan or motor home is becoming increasingly feasible, even via solar. This article by Collyn Rivers shows how.

We self-built our all solar house in Australia’s far north. It is beautiful and practicable. Living with solar alone is 100% possible. Here’s how and why.

Caravan common sense can be fine but used about things technical it’s likely to be based on misleading opinions that contradict the basic laws of physics. Engineering utilises long proven knowledge. This may be (for example) about voltage drop along an electric cable. It may be about the deflection of a spring under load (Hooke’s Law). Or ...

Caravan facts and opinions are not the same. People confusing one for the other cause ongoing and major misunderstanding. This article explains how and why.

Caravan fridge problems are due to poor ventilation, inadequate cable size and/or insufficient power to drive them. Here’s how to fix them.

Carbon Monoxide Poisoning There are severe risks of carbon monoxide poisoning if you misuse LP gas in a caravan, motorhome, or any type of tent or annexe. Moreover, there is a significant risk of brain damage at low levels of carbon monoxide.The first domestically available gas (around 1850) was produced by burning coal. This was often ...

Diesel heating in caravans and motorhomes is easy, effective and safe because it hugely reduces the risk of carbon monoxide poisoning. Collyn Rivers reports. Diesel heating in caravans and motor homes is also relatively affordable. Furthermore, it is easy to self-install. Fuel is readily available, safe and readily stored. LP gas versions are also made.

Grid connect solar problems include, false promotion and vendor claims, incompetent installation etc. Here’s what vendors may not tell you.

Knowing how much solar input is coming in like measuring rainfall. It uses units called Peak Sun Hours instead of inches or millimetres. Here’s how and why.

Imported RV electrics are often not fully compliant. Their owners often wrongly believe they are. They cannot legally be sold unless remedied.

Interconnecting batteries in series or parallel is totally feasible. But its best to know how it works – and the limitations of each. Collyn Rivers explains.

Buying inverters for caravans can confuse. Prices vary for products that may seem identical but are not. Here’s what to buy.

Lighting for caravans has changed. Now, by far the most practical and least energy drawing are LEDs (light emitting diodes). This article shows why.

Living with solar successfully requires being totally aware of the energy you use. Here’s a general guide to how to make it all work.

To make caravan fridges work as claimed, and draw less energy, is cheap, simple and easy. Many can be transformed. This article shows how.

Microwave oven power draw is far greater than many users think. In this article, RV Books’ Collyn Rivers explains why – and how. This is a particular problem in caravans and motor homes. Their deep cycle lead acid batteries cannot sustain the energy draw they require. AGM and lithium-ion batteries are thus better suited.

Problems with stand-alone solar include over-selling, vendor claims, poor installation etc. Here’s plain English answers to the most common questions.

This article explains safe caravan and motor home heating using diesel or gas. It explains how it works, what is available and how to safely install it. To ensure safe caravan and motor home heating it must be done correctly. Apart from a build-up of carbon monoxide, there is a risk of oxygen deprivation. For a ...

Taking 12 volts dc from 24 volts dc can ruin the batteries in a 24 volt system. Here’s how to do it effectively and safely. There are two main ways. The choice depends mainly on the peak current needed: for example the plus 130 amps for a typical microwave oven limits choice to the equalising ...

AGM batteries for caravans, camper trailers, motor homes charge faster and deeper than lead acids and are more rugged mechanically and electrically. They have far less internal discharge. If initially fully charged, they retain 60% or more for over 12 months (except in very hot areas).

Air conditioning a caravan or motor home is becoming increasingly feasible, even via solar. This article by Collyn Rivers shows how.

We self-built our all solar house in Australia’s far north. It is beautiful and practicable. Living with solar alone is 100% possible. Here’s how and why.

Battery charging and battery chargers are often misunderstood – causing batteries to die before their time. This article explains why and how to avoid it.

Battery charging via generator is often slow and shallow or barely works at all. This article shows just why, and how to find and fix the causes.

All lead acid batteries, AGMs and gel cells, generate explosive gas. Even though most are sealed, makers stress that battery ventilation is vital still. Confusion exists over this. Around 2000, some battery makers began to claim that no ventilation was required. Or, ventilation, is advisable but not necessarily essential. They withdrew this advice, however, shortly ...

Blade fuse problems in caravans include fuses and fuse holders burning or melting. Fire risk is high because the fuses may continue to conduct. Ongoing current flow, however, may heat the fuse holder to burning point. This article by RV Books explains why and how to overcome the risk.

Caravan common sense can be fine but used about things technical it’s likely to be based on misleading opinions that contradict the basic laws of physics. Engineering utilises long proven knowledge. This may be (for example) about voltage drop along an electric cable. It may be about the deflection of a spring under load (Hooke’s Law). Or ...

Caravan facts and opinions are not the same. People confusing one for the other cause ongoing and major misunderstanding. This article explains how and why.

Caravan fridge problems are due to poor ventilation, inadequate cable size and/or insufficient power to drive them. Here’s how to fix them.

Twelve-volt caravan systems may be twin-wire or chassis return. Twin-wire is usually best. This article explains why – and which to choose to avoid problems.

Circuit breakers and fuses in caravans both cut the current, but in different ways. Here’s how to know which best suits circuits and appliances protected. Those for 230 volt grid or inverter supplied circuits must be specified and installed by a certified electrician – who will install circuit breakers etc anyway. Circuit breakers and fuses for ...

Initial charging of a deeply discharged battery is generally limited to a basic dc-dc charger’s capacity: not the alternator’s. Dc-dc chargers under 20 amps thus usually take longer to charge close to flat batteries to half charge. Thereon, charging is hugely faster.

Electrical converter problems in caravans result in flat batteries when away for more than a few hours from 230 volts. Here’s how to fix this. These converters are fitted to almost all caravans and motor homes worldwide. They are thus not suitable for RVs free camping.

Electrical converters in RVs supply 12 volts from 230 volt power. They work well from 230 volts, but not for long-term camping. Here’s how to fix the problem.

Electrolysis corrosion in vehicles eats away engine and particularly cooling system parts such as water pumps. It is often caused by a broken earthing lead. These are often accidentally disconnected, or broken. If so, return current travels through components such as the radiator cooling system. Also metal around them. This corrodes parts that have dissimilar ...

Fuel cells for caravans are non-polluting and ultra-quiet. Whilst initially promising their initial and running costs still excludes general RV use.

Fuel savers do not work. That actually being sold are franchises to defraud others. The ‘fuel saver’ is typically a useless pill (typically of camphor).

Using grid connect solar modules for RVs is readily done but needs an MPPT regulator. This article by Collyn Rivers explains how and why it is done.

Grid connect solar problems include, false promotion and vendor claims, incompetent installation etc. Here’s what vendors may not tell you.

Knowing how much solar input is coming in like measuring rainfall. It uses units called Peak Sun Hours instead of inches or millimetres. Here’s how and why.

Knowing how to tell caravan battery charge is not easy. Get this wrong and good batteries are scrapped and bad ones retained. Here’s why, and how to tell.

Imported RV electrics are often not fully compliant. Their owners often wrongly believe they are. They cannot legally be sold unless remedied.

Interconnecting batteries in series or parallel is totally feasible. But its best to know how it works – and the limitations of each. Collyn Rivers explains.

Buying inverters for caravans can confuse. Prices vary for products that may seem identical but are not. Here’s what to buy.

Lead acid batteries for caravans are still a viable buy. They are made in different shapes, sizes and capabilities. All work in a basically similar way. Energy is stored within them as a result of electro-chemical reactions between lead plates and a water/acid mix (called electrolyte). They are charged by imposing a voltage across them that ...

Despite their very small batteries LiFePO4 jump starters really do work. This article by Collyn Rivers explains how and why. A lot of power (the rate at which energy is used) is needed. The amount of energy (the ability to perform work) required, however is surprisingly small. In the days of vintage cars, a strongish ...

Lighting for caravans has changed. Now, by far the most practical and least energy drawing are LEDs (light emitting diodes). This article shows why.

Lightning frightens but lightning risk in caravans is very low. That risk however is far from random. Here’s how to reduce it yet further.

Lithium batteries in caravans and motorhomes pack a lot of energy but need specialised knowledge to use safely and reliably. Here’s how and why – and how to install and use them.

Lithium battery safety in caravans is tainted by a fire-prone technology of differing kind. The LiFePO4s used in caravans are far safer – here’s why.

Living with solar successfully requires being totally aware of the energy you use. Here’s a general guide to how to make it all work.

To make caravan fridges work as claimed, and draw less energy, is cheap, simple and easy. Many can be transformed. This article shows how.

Microwave oven power draw is far greater than many users think. In this article, RV Books’ Collyn Rivers explains why – and how. This is a particular problem in caravans and motor homes. Their deep cycle lead acid batteries cannot sustain the energy draw they require. AGM and lithium-ion batteries are thus better suited.

Problems with stand-alone solar include over-selling, vendor claims, poor installation etc. Here’s plain English answers to the most common questions.

Quietening caravan water pumps is simple to do at no or trivial cost. This article from RV Books’ Collyn Rivers shows how.

Promotion and sale of units for retarding rust electronically (for RVs etc) was banned in the USA in the 1990s. One brand (CECI) is now banned in Australia. Their sale is an offence under Section 218 of the Australian Consumer Law. The details are at the end of this article). In 2015 the NSW Fair Trade ...

Before 2000 or so most alternators produced 14.4 – 14.7 volts, and a few close to 15 volts. This situation changed in 2014 in the quest to reduce emissions. Reducing alternator voltage assists, but introduces problems if the alternator also charges RV batteries. This article by Collyn Rivers explains what causes these alternator charging problems ...

RV batteries store energy from your RV’s or tow vehicle’s alternator and solar modules and grid or generator power via a battery charger. This article explains all about the many types of battery now available.

Solar is now so cheap that the main limitation is the space available for the solar modules. It is not possible to have too much solar. Ample solar prolongs battery life. It also and ensures at least some output during overcast days. There is no risk of overcharging, nor overloading the associated solar regulator. That ...

Knowing the solar input available for caravans is vital, especially up north. This article shows how to know that available and increase it too.

If connected incorrectly, solar regulators with current shunts can register twice your true solar input. Here’s why – and how you can to fix it.

Speeding battery charging from generators is cheap, effective and relatively simple. This article by RV Books’ Collyn Rivers explains how to do it.

This article shows the sizes and lengths of electric supply cables for caravans and motor homes legally required in Australia and NZ.

TV interference from LEDs is an issue worldwide. It is mostly caused by LEDs in the same home (or RV) as the TV. This can be checked by turning them off. Another indicator of TV interference from LEDs is good daytime reception until lights are turned on. In the worst cases, TV reception is unwatchable, ...

Variable voltage alternator problems with caravans and motor homes arise when charging auxiliary batteries. Here’s why and how to fix them. These alternators are, in particular, installed on many post-2013 vehicles.

AGM batteries for caravans, camper trailers, motor homes charge faster and deeper than lead acids and are more rugged mechanically and electrically. They have far less internal discharge. If initially fully charged, they retain 60% or more for over 12 months (except in very hot areas).

Air conditioning a caravan or motor home is becoming increasingly feasible, even via solar. This article by Collyn Rivers shows how.

We self-built our all solar house in Australia’s far north. It is beautiful and practicable. Living with solar alone is 100% possible. Here’s how and why.

Australia has a different set of road rules for each state and jurisdiction. As a direct result, Australian Road Rules confuse drivers, cyclist and pedestrians. It would seem to make sense to have just one set of national towing rules.

The current (February 2018) Australian RV rules and regulations are outlined here by Collyn Rivers of RV Books. Those for trailers under 4500 kg will change in late 2018 but details are not yet available

Battery charging via generator is often slow and shallow or barely works at all. This article shows just why, and how to find and fix the causes.

Buying a New RV in Five Steps – before you start, stop and think. Buying a new RV is a major investment. This buying a New RV in Five Steps article helps resolve issues early on. Following its advice saves later heartache: Is the RV lifestyle right for you? Will you miss family and friends? What ...

If you can, take along someone who knows about caravans. Unlike cars, a well-made caravan may last for decades with only minor areas that need attention. Not all are like that, however. Buying used caravans – what to check shows what to look for when buying a used caravan.

To tow safely and legally in Australia, caravan & tow vehicle weight definitions are vital for you to know. Those shown here were valid as of June 2020. These definitions may change. New RV legislation is expected to be announced later this year. It is not, however, likely to be enforced until 2022 or 2023.

Caravan and motorhome compliance can confuse. Imports are often not 100% compliant. This article shows what is required. Total caravan and motorhome compliance is rarely an issue with locally-made product. It can be, however, with imported caravans. This was particularly so of fifth-wheel caravans. There can also be problems with private imports. They may legally ...

Caravan and motor home tyres take a far greater beating than those in general use – an industry report noted that such tyres are subject to major abuse greater than any other form of use. In particular, stated the report, caravan and motor home tyres are often grossly under-inflated and overloaded.

The complex interactions of caravan and tow vehicle dynamics described here by Collyn Rivers, is a semi-technical précis of his recently published Why Caravans Roll Over – and how to prevent that.

Caravan common sense can be fine but used about things technical it’s likely to be based on misleading opinions that contradict the basic laws of physics. Engineering utilises long proven knowledge. This may be (for example) about voltage drop along an electric cable. It may be about the deflection of a spring under load (Hooke’s Law). Or ...

Australia has two main and seemingly interdependent caravan industries. One makes caravans of varying stability. The other makes devices (of varying effectiveness) intended to increase that stability. Both are curious. Not all makers appear to understand the more basic laws of physics involved. Or perhaps assume immunity from them. So presumably do owners of ultra-long ...

That caravans roll-over yet most vehicles don’t show caravan dynamics is not understood or is ignored. Caravan dynamics simply explained tells why. The main cause is that hitch extending from the tow vehicle’s rear. It not only allows but causes both tow vehicle and caravan to sway (yaw). Worse – if one yaw’s clockwise it ...

Caravan facts and opinions are not the same. People confusing one for the other cause ongoing and major misunderstanding. This article explains how and why.

Many RV owners complain that, when approaching the vendor with after-sale issues, they are told to consult the RV maker. That maker then advises consulting the vendor. Here is the legal situation – and your rights as a buyer.

The current (February 2018) Australian RV rules and regulations are outlined here by Collyn Rivers of RV Books. Those for trailers under 4500 kg will change in late 2018 but details are not yet available

Caravan suspension has requirements that are very different from tow vehicles. This is only too often misunderstood. Here’s why and what it should be.

For safe towing, a caravan must be tow ball heavy. This article explains why and how to get caravan tow ball weight right.

Twelve-volt caravan systems may be twin-wire or chassis return. Twin-wire is usually best. This article explains why – and which to choose to avoid problems.

The maximum caravan weight safe to tow depends on what tows it. This article by Collyn Rivers explains why – and how to know what it is.

A conventional caravan must always be a compromise. This is because it is towed via hitch at some distance behind the tow vehicle’s rear wheels. If that vehicle sways clockwise, that hitch overhang causes (not just permits) the caravan to sway anti-clockwise. If the caravan sways clockwise, it causes the tow vehicle to sway anticlockwise.  ...

Carbon Monoxide Poisoning There are severe risks of carbon monoxide poisoning if you misuse LP gas in a caravan, motorhome, or any type of tent or annexe. Moreover, there is a significant risk of brain damage at low levels of carbon monoxide.The first domestically available gas (around 1850) was produced by burning coal. This was often ...

When choosing a caravan tow vehicle there are key caravan towing specifications that you need to know. This article explains what they are and why they are vital.

Circuit breakers and fuses in caravans both cut the current, but in different ways. Here’s how to know which best suits circuits and appliances protected. Those for 230 volt grid or inverter supplied circuits must be specified and installed by a certified electrician – who will install circuit breakers etc anyway. Circuit breakers and fuses for ...

Claims for dual-cab ute towing capacity mislead caravan buyers. That ute must weigh enough to keep a caravan steady. If not, the caravan tail wags the towing dog.

Do caravans need independent suspension is a marketing rather than an engineering issue. This article explains why caravan beam axles are generally better.

Driving across Africa is now politically impossible. Our 1960 such two-way expedition across all Africa was the very last known. We started in mid 1959 – and exited the Sahara on 28 April 1960. The track was closed that night. It has never re-opened. Further, Africa’s centre, right down to Zambia, has ever since, been far ...

Electrical converter problems in caravans result in flat batteries when away for more than a few hours from 230 volts. Here’s how to fix this. These converters are fitted to almost all caravans and motor homes worldwide. They are thus not suitable for RVs free camping.

Electrical converters in RVs supply 12 volts from 230 volt power. They work well from 230 volts, but not for long-term camping. Here’s how to fix the problem.

Electrolysis corrosion in vehicles eats away engine and particularly cooling system parts such as water pumps. It is often caused by a broken earthing lead. These are often accidentally disconnected, or broken. If so, return current travels through components such as the radiator cooling system. Also metal around them. This corrodes parts that have dissimilar ...

Fifth wheel caravans are safer than conventional caravans. They are fundamentally more stable on road and far less likely to overturn. Further, because up to two metres more is usable space, they provide that much more living area. They increasingly challenge caravan and motor home sales.

RV users free camp safely in Australia to avoid often crowded caravan parks, some 500 km apart. Many self-contained RVs need only a safe space overnight. This article shows how to free camp safely in Australia.

Fuel cells for caravans are non-polluting and ultra-quiet. Whilst initially promising their initial and running costs still excludes general RV use.

Fuel savers do not work. That actually being sold are franchises to defraud others. The ‘fuel saver’ is typically a useless pill (typically of camphor).

Grid connect solar problems include, false promotion and vendor claims, incompetent installation etc. Here’s what vendors may not tell you.

Knowing how much solar input is coming in like measuring rainfall. It uses units called Peak Sun Hours instead of inches or millimetres. Here’s how and why.

What is the most suitable caravan layout for me? This article shows how to choose the best caravan layout to suit your individual needs.

Camping in Australia has no national or state-based definition. In New South Wales alone, over ten government authorities regulate camping on their land. Even the definition of camping is inconsistent across the related Acts.

Reversing a caravan is easy, but needs practice. This article will guide you through how to reverse a caravan if used in conjunction with doing it yourself.

Imported RV electrics are often not fully compliant. Their owners often wrongly believe they are. They cannot legally be sold unless remedied.

Interconnecting batteries in series or parallel is totally feasible. But its best to know how it works – and the limitations of each. Collyn Rivers explains.

Buying inverters for caravans can confuse. Prices vary for products that may seem identical but are not. Here’s what to buy.

Is four wheel drive needed for motor homes – what can travel where, with and without it. Here’s all you need to know if you decide to build or buy one.

Despite their very small batteries LiFePO4 jump starters really do work. This article by Collyn Rivers explains how and why. A lot of power (the rate at which energy is used) is needed. The amount of energy (the ability to perform work) required, however is surprisingly small. In the days of vintage cars, a strongish ...

Lighting for caravans has changed. Now, by far the most practical and least energy drawing are LEDs (light emitting diodes). This article shows why.

Lightning frightens but lightning risk in caravans is very low. That risk however is far from random. Here’s how to reduce it yet further.

Living with solar successfully requires being totally aware of the energy you use. Here’s a general guide to how to make it all work.

To make caravan fridges work as claimed, and draw less energy, is cheap, simple and easy. Many can be transformed. This article shows how.

The labelling of Napisan and many Look-Alikes (e.g. Nappy Treatment Plus, Ultra Booster Everyday Plus Laundry Soaker, Laundry Soaker and Booster etc) is clear. All state these products are safe for you to use in septic tanks. Products can be bought from supermarkets worldwide. It is also easy to make your own Napisan Look-Alike. ...

Long end-heavy caravans have a need for a Weight Distributing Hitch (WDH). For all, though, it inherently reduces tow vehicle stability. Here’s how and why.

Problems with stand-alone solar include over-selling, vendor claims, poor installation etc. Here’s plain English answers to the most common questions.

Quietening caravan water pumps is simple to do at no or trivial cost. This article from RV Books’ Collyn Rivers shows how.

Reducing caravan sway (yaw) necessitates minimising its causes – and only then adding devices promoted as reducing it. This article shows why and how.

Promotion and sale of units for retarding rust electronically (for RVs etc) was banned in the USA in the 1990s. One brand (CECI) is now banned in Australia. Their sale is an offence under Section 218 of the Australian Consumer Law. The details are at the end of this article). In 2015 the NSW Fair Trade ...

New caravans and motorhomes have only the bare essentials. This article describes the top ten RV accessories that RV owners really will need.

On the surface, the Australian RV industry is healthy. But underneath all is far from well. A  great deal needs changing. There are lots to do. RV Books explains the RV industry changes needed.

Solar is now so cheap that the main limitation is the space available for the solar modules. It is not possible to have too much solar. Ample solar prolongs battery life. It also and ensures at least some output during overcast days. There is no risk of overcharging, nor overloading the associated solar regulator. That ...

RV toilets have a role in RV life out of proportion to their size. They are needed for only a few minutes a day. They must work as advertised. In particular, you need to choose the associated chemicals carefully. This article covers all the average RV buyer needs to know.

This article explains safe caravan and motor home heating using diesel or gas. It explains how it works, what is available and how to safely install it. To ensure safe caravan and motor home heating it must be done correctly. Apart from a build-up of carbon monoxide, there is a risk of oxygen deprivation. For a ...

Safe toilet chemicals are essential, but some toilet chemicals kill essential bacteria in septic and environmental systems: some are toxic – this article explains all.

Until recently sleep apnoea machines for camping drew too much energy for use on solar. It’s now feasible using the approach in this article.

Knowing the solar input available for caravans is vital, especially up north. This article shows how to know that available and increase it too.

If connected incorrectly, solar regulators with current shunts can register twice your true solar input. Here’s why – and how you can to fix it.

Speeding battery charging from generators is cheap, effective and relatively simple. This article by RV Books’ Collyn Rivers explains how to do it.

This article shows the sizes and lengths of electric supply cables for caravans and motor homes legally required in Australia and NZ.

That most popular is to follow the shortest route around Australia’s coastline. It is 13,800 or so kilometres (8,625 miles). Allowing for diversions (such as Tasmania or Alice Springs and Uluru), this distance may double. With wind speeds as high as 60 km/h, and particularly if you are towing a caravan, fuel usage will be much ...

Caravans and their tow vehicles have much the same accident rates as other forms of motor transport. Their main type of accident, jack-knifing and roll-over, however, are different. Here are ten tips for safe caravan towing.

Here is a listing of the top 10 Australian RV Apps. They are ranked in subjective order of how likely they are to save a life. Click on an app image to go to the app’s download page.

A caravan heavier than its tow vehicle is like a dog with an overweight tail, it may sway so much its tow vehicle cannot control it. Swerving strongly at speed to avoid a head-on collision induce this. So too may a strong side wind gust. That wind may be natural or from a close passing truck. 

A weight distributing hitch is not needed if the laden weight of the tow vehicle is equal to or exceeds that of the laden caravan. Nor is a weight distributing hitch needed for any trailer under about 4 metres.

Ultra light caravans and fifth wheelers are rare, but feasible. Here’s how it is be done using hi-tech materials. One, over 9 metres, was under 2000 kg.

Tow ball weight pushes down the rear of the tow vehicle – thereby increasing the weight on its rear tyres. A WDH, in effect, is a semi-flexible springy beam that levers back up the rear of the tow vehicle and levers down its front. In doing so, however, it reduces the imposed load on the ...

Correct weight distribution hitch setting up compensates caravan tow vehicle front end lift but introduces instability if too tight. Here’s why.

What off-road really means is terrain that necessitates a serious 4WD – but many RV vendors may define it as anything lacking a centre white line. Compounding this, many RV vendors make claims about what can go where that are close to absurd.

Wheels falling off trailers, wheel studs breaking and wheel nuts loosening still happens. Here is why it happens, and how to prevent it. Wrecked wheel bearings and fractured stub axles are also common. That fastenings such as wheel nuts may be caused, not just permitted, to loosen is rarely covered in engineering training. The causes ...

Caravans towed by an overhung hitch sway and may overturn. Over 250 did so in the first six months of 2018. This article explains why caravans sway and roll over – and how to prevent it.

Wheels falling off trailers, wheel studs breaking and wheel nuts loosening still happens. Here is why it happens, and how to prevent it. Wrecked wheel bearings and fractured stub axles are also common. That fastenings such as wheel nuts may be caused, not just permitted, to loosen is rarely covered in engineering training. The causes ...

Correct weight distribution hitch setting up compensates caravan tow vehicle front end lift but introduces instability if too tight. Here’s why.

Tow ball weight pushes down the rear of the tow vehicle – thereby increasing the weight on its rear tyres. A WDH, in effect, is a semi-flexible springy beam that levers back up the rear of the tow vehicle and levers down its front. In doing so, however, it reduces the imposed load on the ...

A weight distributing hitch is not needed if the laden weight of the tow vehicle is equal to or exceeds that of the laden caravan. Nor is a weight distributing hitch needed for any trailer under about 4 metres.

Caravans and their tow vehicles have much the same accident rates as other forms of motor transport. Their main type of accident, jack-knifing and roll-over, however, are different. Here are ten tips for safe caravan towing.

This article shows the sizes and lengths of electric supply cables for caravans and motor homes legally required in Australia and NZ.

Until recently sleep apnoea machines for camping drew too much energy for use on solar. It’s now feasible using the approach in this article.

Safe toilet chemicals are essential, but some toilet chemicals kill essential bacteria in septic and environmental systems: some are toxic – this article explains all.

This article explains safe caravan and motor home heating using diesel or gas. It explains how it works, what is available and how to safely install it. To ensure safe caravan and motor home heating it must be done correctly. Apart from a build-up of carbon monoxide, there is a risk of oxygen deprivation. For a ...

On the surface, the Australian RV industry is healthy. But underneath all is far from well. A  great deal needs changing. There are lots to do. RV Books explains the RV industry changes needed.

Long end-heavy caravans have a need for a Weight Distributing Hitch (WDH). For all, though, it inherently reduces tow vehicle stability. Here’s how and why.

The labelling of Napisan and many Look-Alikes (e.g. Nappy Treatment Plus, Ultra Booster Everyday Plus Laundry Soaker, Laundry Soaker and Booster etc) is clear. All state these products are safe for you to use in septic tanks. Products can be bought from supermarkets worldwide. It is also easy to make your own Napisan Look-Alike. ...

The overhung hitch of a caravan tow vehicle can cause (not just permit) a caravan to sway. This sway annoys at low speed and is dangerous at high speed. Until recently attempts to limit such sway rely on friction to dampen and ideally prevent it. Unfortunately, mechanical sway-control has little value at speed.

Making caravans more stable is readily possible by design, loading, and tow vehicle use and choice. This article by Collyn Rivers explains how. It also provides practical guidelines for buying a caravan and tow vehicle, their loading and on-road usage. For a full technical explanation of why rigs can be unstable please see my Caravan and ...

Lightning frightens but lightning risk in caravans is very low. That risk however is far from random. Here’s how to reduce it yet further.

Reversing a caravan is easy, but needs practice. This article will guide you through how to reverse a caravan if used in conjunction with doing it yourself.

What is the most suitable caravan layout for me? This article shows how to choose the best caravan layout to suit your individual needs.

You can obtain gross combined mass upgrades for most SUVs. Depending on make and model, these add 300-500 kg. It makes sense to do this. Carrying that extra mass results in a safer ratio of laden tow vehicle weight to laden caravan weight.

A major LP gas risk in caravans is carbon monoxide build up. Low levels cause brain damage, and death at high levels. Here’s how to eliminate the dangers. A carbon monoxide build up as a direct result of burning LP gas in any inadequately ventilated confined space. The risk in RVs is high enough to ...

RV users free camp safely in Australia to avoid often crowded caravan parks, some 500 km apart. Many self-contained RVs need only a safe space overnight. This article shows how to free camp safely in Australia.

Fifth wheel caravans are safer than conventional caravans. They are fundamentally more stable on road and far less likely to overturn. Further, because up to two metres more is usable space, they provide that much more living area. They increasingly challenge caravan and motor home sales.

Do caravans need independent suspension is a marketing rather than an engineering issue. This article explains why caravan beam axles are generally better.

Diesel heating in caravans and motorhomes is easy, effective and safe because it hugely reduces the risk of carbon monoxide poisoning. Collyn Rivers reports. Diesel heating in caravans and motor homes is also relatively affordable. Furthermore, it is easy to self-install. Fuel is readily available, safe and readily stored. LP gas versions are also made.

Claims for dual-cab ute towing capacity mislead caravan buyers. That ute must weigh enough to keep a caravan steady. If not, the caravan tail wags the towing dog.

Circuit breakers and fuses in caravans both cut the current, but in different ways. Here’s how to know which best suits circuits and appliances protected. Those for 230 volt grid or inverter supplied circuits must be specified and installed by a certified electrician – who will install circuit breakers etc anyway. Circuit breakers and fuses for ...

Carbon Monoxide Poisoning There are severe risks of carbon monoxide poisoning if you misuse LP gas in a caravan, motorhome, or any type of tent or annexe. Moreover, there is a significant risk of brain damage at low levels of carbon monoxide.The first domestically available gas (around 1850) was produced by burning coal. This was often ...

A conventional caravan must always be a compromise. This is because it is towed via hitch at some distance behind the tow vehicle’s rear wheels. If that vehicle sways clockwise, that hitch overhang causes (not just permits) the caravan to sway anti-clockwise. If the caravan sways clockwise, it causes the tow vehicle to sway anticlockwise.  ...

The maximum caravan weight safe to tow depends on what tows it. This article by Collyn Rivers explains why – and how to know what it is.

For safe towing, a caravan must be tow ball heavy. This article explains why and how to get caravan tow ball weight right.

Caravan Tare Weight issues mainly arise about what’s included and what’s not. Water is not, nor may be optional extras. This article reveals all.

The current (February 2018) Australian RV rules and regulations are outlined here by Collyn Rivers of RV Books. Those for trailers under 4500 kg will change in late 2018 but details are not yet available

Caravan facts and opinions are not the same. People confusing one for the other cause ongoing and major misunderstanding. This article explains how and why.

That caravans roll-over yet most vehicles don’t show caravan dynamics is not understood or is ignored. Caravan dynamics simply explained tells why. The main cause is that hitch extending from the tow vehicle’s rear. It not only allows but causes both tow vehicle and caravan to sway (yaw). Worse – if one yaw’s clockwise it ...

Australia has two main and seemingly interdependent caravan industries. One makes caravans of varying stability. The other makes devices (of varying effectiveness) intended to increase that stability. Both are curious. Not all makers appear to understand the more basic laws of physics involved. Or perhaps assume immunity from them. So presumably do owners of ultra-long ...

Caravan common sense can be fine but used about things technical it’s likely to be based on misleading opinions that contradict the basic laws of physics. Engineering utilises long proven knowledge. This may be (for example) about voltage drop along an electric cable. It may be about the deflection of a spring under load (Hooke’s Law). Or ...

The complex interactions of caravan and tow vehicle dynamics described here by Collyn Rivers, is a semi-technical précis of his recently published Why Caravans Roll Over – and how to prevent that.

Caravan and motorhome compliance can confuse. Imports are often not 100% compliant. This article shows what is required. Total caravan and motorhome compliance is rarely an issue with locally-made product. It can be, however, with imported caravans. This was particularly so of fifth-wheel caravans. There can also be problems with private imports. They may legally ...

To tow safely and legally in Australia, caravan & tow vehicle weight definitions are vital for you to know. Those shown here were valid as of June 2020. These definitions may change. New RV legislation is expected to be announced later this year. It is not, however, likely to be enforced until 2022 or 2023.

If you can, take along someone who knows about caravans. Unlike cars, a well-made caravan may last for decades with only minor areas that need attention. Not all are like that, however. Buying used caravans – what to check shows what to look for when buying a used caravan.

Blade fuse problems in caravans include fuses and fuse holders burning or melting. Fire risk is high because the fuses may continue to conduct. Ongoing current flow, however, may heat the fuse holder to burning point. This article by RV Books explains why and how to overcome the risk.

All lead acid batteries, AGMs and gel cells, generate explosive gas. Even though most are sealed, makers stress that battery ventilation is vital still. Confusion exists over this. Around 2000, some battery makers began to claim that no ventilation was required. Or, ventilation, is advisable but not necessarily essential. They withdrew this advice, however, shortly ...

The current (February 2018) Australian RV rules and regulations are outlined here by Collyn Rivers of RV Books. Those for trailers under 4500 kg will change in late 2018 but details are not yet available

Australia has a different set of road rules for each state and jurisdiction. As a direct result, Australian Road Rules confuse drivers, cyclist and pedestrians. It would seem to make sense to have just one set of national towing rules.

Air conditioning a caravan or motor home is becoming increasingly feasible, even via solar. This article by Collyn Rivers shows how.

Australia has a different set of road rules for each state and jurisdiction. As a direct result, Australian Road Rules confuse drivers, cyclist and pedestrians. It would seem to make sense to have just one set of national towing rules.

The current (February 2018) Australian RV rules and regulations are outlined here by Collyn Rivers of RV Books. Those for trailers under 4500 kg will change in late 2018 but details are not yet available

Buying a New RV in Five Steps – before you start, stop and think. Buying a new RV is a major investment. This buying a New RV in Five Steps article helps resolve issues early on. Following its advice saves later heartache: Is the RV lifestyle right for you? Will you miss family and friends? What ...

If you can, take along someone who knows about caravans. Unlike cars, a well-made caravan may last for decades with only minor areas that need attention. Not all are like that, however. Buying used caravans – what to check shows what to look for when buying a used caravan.

To tow safely and legally in Australia, caravan & tow vehicle weight definitions are vital for you to know. Those shown here were valid as of June 2020. These definitions may change. New RV legislation is expected to be announced later this year. It is not, however, likely to be enforced until 2022 or 2023.

Caravan and motorhome compliance can confuse. Imports are often not 100% compliant. This article shows what is required. Total caravan and motorhome compliance is rarely an issue with locally-made product. It can be, however, with imported caravans. This was particularly so of fifth-wheel caravans. There can also be problems with private imports. They may legally ...

The complex interactions of caravan and tow vehicle dynamics described here by Collyn Rivers, is a semi-technical précis of his recently published Why Caravans Roll Over – and how to prevent that.

Caravan common sense can be fine but used about things technical it’s likely to be based on misleading opinions that contradict the basic laws of physics. Engineering utilises long proven knowledge. This may be (for example) about voltage drop along an electric cable. It may be about the deflection of a spring under load (Hooke’s Law). Or ...

Australia has two main and seemingly interdependent caravan industries. One makes caravans of varying stability. The other makes devices (of varying effectiveness) intended to increase that stability. Both are curious. Not all makers appear to understand the more basic laws of physics involved. Or perhaps assume immunity from them. So presumably do owners of ultra-long ...

That caravans roll-over yet most vehicles don’t show caravan dynamics is not understood or is ignored. Caravan dynamics simply explained tells why. The main cause is that hitch extending from the tow vehicle’s rear. It not only allows but causes both tow vehicle and caravan to sway (yaw). Worse – if one yaw’s clockwise it ...

Caravan facts and opinions are not the same. People confusing one for the other cause ongoing and major misunderstanding. This article explains how and why.

Many RV owners complain that, when approaching the vendor with after-sale issues, they are told to consult the RV maker. That maker then advises consulting the vendor. Here is the legal situation – and your rights as a buyer.

The current (February 2018) Australian RV rules and regulations are outlined here by Collyn Rivers of RV Books. Those for trailers under 4500 kg will change in late 2018 but details are not yet available

Caravan Tare Weight issues mainly arise about what’s included and what’s not. Water is not, nor may be optional extras. This article reveals all.

The maximum caravan weight safe to tow depends on what tows it. This article by Collyn Rivers explains why – and how to know what it is.

A conventional caravan must always be a compromise. This is because it is towed via hitch at some distance behind the tow vehicle’s rear wheels. If that vehicle sways clockwise, that hitch overhang causes (not just permits) the caravan to sway anti-clockwise. If the caravan sways clockwise, it causes the tow vehicle to sway anticlockwise.  ...

When choosing a caravan tow vehicle there are key caravan towing specifications that you need to know. This article explains what they are and why they are vital.

Claims for dual-cab ute towing capacity mislead caravan buyers. That ute must weigh enough to keep a caravan steady. If not, the caravan tail wags the towing dog.

RV users free camp safely in Australia to avoid often crowded caravan parks, some 500 km apart. Many self-contained RVs need only a safe space overnight. This article shows how to free camp safely in Australia.

Fuel savers do not work. That actually being sold are franchises to defraud others. The ‘fuel saver’ is typically a useless pill (typically of camphor).

You can obtain gross combined mass upgrades for most SUVs. Depending on make and model, these add 300-500 kg. It makes sense to do this. Carrying that extra mass results in a safer ratio of laden tow vehicle weight to laden caravan weight.

What is the most suitable caravan layout for me? This article shows how to choose the best caravan layout to suit your individual needs.

Camping in Australia has no national or state-based definition. In New South Wales alone, over ten government authorities regulate camping on their land. Even the definition of camping is inconsistent across the related Acts.

Imported RV electrics are often not fully compliant. Their owners often wrongly believe they are. They cannot legally be sold unless remedied.

Commercially imported RVs are now mostly viable, but tighter compliance checking shows some private imports virtually impossible to remedy. Buyers beware! There are also major traps for those buying private imports second-hand.This article explains why and how.

Long end-heavy caravans have a need for a Weight Distributing Hitch (WDH). For all, though, it inherently reduces tow vehicle stability. Here’s how and why.

Reducing caravan sway (yaw) necessitates minimising its causes – and only then adding devices promoted as reducing it. This article shows why and how.

Here is a current guide to Australia’s Road Rules RV drivers need to know – some will change around 2004. This article relates to existing RVs. This guide will be updated immediately the new Australian Road Rules are known.

On the surface, the Australian RV industry is healthy. But underneath all is far from well. A  great deal needs changing. There are lots to do. RV Books explains the RV industry changes needed.

This article shows the sizes and lengths of electric supply cables for caravans and motor homes legally required in Australia and NZ.

Caravans and their tow vehicles have much the same accident rates as other forms of motor transport. Their main type of accident, jack-knifing and roll-over, however, are different. Here are ten tips for safe caravan towing.

A caravan heavier than its tow vehicle is like a dog with an overweight tail, it may sway so much its tow vehicle cannot control it. Swerving strongly at speed to avoid a head-on collision induce this. So too may a strong side wind gust. That wind may be natural or from a close passing truck. 

AGM batteries for caravans, camper trailers, motor homes charge faster and deeper than lead acids and are more rugged mechanically and electrically. They have far less internal discharge. If initially fully charged, they retain 60% or more for over 12 months (except in very hot areas).

Air conditioning a caravan or motor home is becoming increasingly feasible, even via solar. This article by Collyn Rivers shows how.

We self-built our all solar house in Australia’s far north. It is beautiful and practicable. Living with solar alone is 100% possible. Here’s how and why.

Battery charging and battery chargers are often misunderstood – causing batteries to die before their time. This article explains why and how to avoid it.

Battery charging via generator is often slow and shallow or barely works at all. This article shows just why, and how to find and fix the causes.

Twelve-volt caravan systems may be twin-wire or chassis return. Twin-wire is usually best. This article explains why – and which to choose to avoid problems.

Circuit breakers and fuses in caravans both cut the current, but in different ways. Here’s how to know which best suits circuits and appliances protected. Those for 230 volt grid or inverter supplied circuits must be specified and installed by a certified electrician – who will install circuit breakers etc anyway. Circuit breakers and fuses for ...

Electrical converters in RVs supply 12 volts from 230 volt power. They work well from 230 volts, but not for long-term camping. Here’s how to fix the problem.

Fuel cells for caravans are non-polluting and ultra-quiet. Whilst initially promising their initial and running costs still excludes general RV use.

Using grid connect solar modules for RVs is readily done but needs an MPPT regulator. This article by Collyn Rivers explains how and why it is done.

Grid connect solar problems include, false promotion and vendor claims, incompetent installation etc. Here’s what vendors may not tell you.

Knowing how much solar input is coming in like measuring rainfall. It uses units called Peak Sun Hours instead of inches or millimetres. Here’s how and why.

Knowing how to tell caravan battery charge is not easy. Get this wrong and good batteries are scrapped and bad ones retained. Here’s why, and how to tell.

Interconnecting batteries in series or parallel is totally feasible. But its best to know how it works – and the limitations of each. Collyn Rivers explains.

Lighting for caravans has changed. Now, by far the most practical and least energy drawing are LEDs (light emitting diodes). This article shows why.

Lithium batteries in caravans and motorhomes pack a lot of energy but need specialised knowledge to use safely and reliably. Here’s how and why – and how to install and use them.

Lithium battery safety in caravans is tainted by a fire-prone technology of differing kind. The LiFePO4s used in caravans are far safer – here’s why.

Living with solar successfully requires being totally aware of the energy you use. Here’s a general guide to how to make it all work.

Microwave oven power draw is far greater than many users think. In this article, RV Books’ Collyn Rivers explains why – and how. This is a particular problem in caravans and motor homes. Their deep cycle lead acid batteries cannot sustain the energy draw they require. AGM and lithium-ion batteries are thus better suited.

We personally drove our solar equipped RVs some 130,000 km over most of Australia’s inland dirt tracks. Nothing failed in that distance (and 20 years).

Problems with stand-alone solar include over-selling, vendor claims, poor installation etc. Here’s plain English answers to the most common questions.

RV batteries store energy from your RV’s or tow vehicle’s alternator and solar modules and grid or generator power via a battery charger. This article explains all about the many types of battery now available.

Solar is now so cheap that the main limitation is the space available for the solar modules. It is not possible to have too much solar. Ample solar prolongs battery life. It also and ensures at least some output during overcast days. There is no risk of overcharging, nor overloading the associated solar regulator. That ...

Knowing the solar input available for caravans is vital, especially up north. This article shows how to know that available and increase it too.

If connected incorrectly, solar regulators with current shunts can register twice your true solar input. Here’s why – and how you can to fix it.

AGM batteries for caravans, camper trailers, motor homes charge faster and deeper than lead acids and are more rugged mechanically and electrically. They have far less internal discharge. If initially fully charged, they retain 60% or more for over 12 months (except in very hot areas).

Air conditioning a caravan or motor home is becoming increasingly feasible, even via solar. This article by Collyn Rivers shows how.

Australia has a different set of road rules for each state and jurisdiction. As a direct result, Australian Road Rules confuse drivers, cyclist and pedestrians. It would seem to make sense to have just one set of national towing rules.

The current (February 2018) Australian RV rules and regulations are outlined here by Collyn Rivers of RV Books. Those for trailers under 4500 kg will change in late 2018 but details are not yet available

Battery charging via generator is often slow and shallow or barely works at all. This article shows just why, and how to find and fix the causes.

The best way to drive around Australia is anticlockwise via its 14,000 km coastal road. This enables you to enjoy the seasons and strong prevailing winds. These winds may be a constant 40 km/h plus (25 mph) so travelling clockwise for the typical 17,000 km (10,600 miles) requires surprisingly more fuel.

Buying a New RV in Five Steps – before you start, stop and think. Buying a new RV is a major investment. This buying a New RV in Five Steps article helps resolve issues early on. Following its advice saves later heartache: Is the RV lifestyle right for you? Will you miss family and friends? What ...

To tow safely and legally in Australia, caravan & tow vehicle weight definitions are vital for you to know. Those shown here were valid as of June 2020. These definitions may change. New RV legislation is expected to be announced later this year. It is not, however, likely to be enforced until 2022 or 2023.

Caravan and motor home tyres take a far greater beating than those in general use – an industry report noted that such tyres are subject to major abuse greater than any other form of use. In particular, stated the report, caravan and motor home tyres are often grossly under-inflated and overloaded.

The complex interactions of caravan and tow vehicle dynamics described here by Collyn Rivers, is a semi-technical précis of his recently published Why Caravans Roll Over – and how to prevent that.

Caravan common sense can be fine but used about things technical it’s likely to be based on misleading opinions that contradict the basic laws of physics. Engineering utilises long proven knowledge. This may be (for example) about voltage drop along an electric cable. It may be about the deflection of a spring under load (Hooke’s Law). Or ...

Australia has two main and seemingly interdependent caravan industries. One makes caravans of varying stability. The other makes devices (of varying effectiveness) intended to increase that stability. Both are curious. Not all makers appear to understand the more basic laws of physics involved. Or perhaps assume immunity from them. So presumably do owners of ultra-long ...

That caravans roll-over yet most vehicles don’t show caravan dynamics is not understood or is ignored. Caravan dynamics simply explained tells why. The main cause is that hitch extending from the tow vehicle’s rear. It not only allows but causes both tow vehicle and caravan to sway (yaw). Worse – if one yaw’s clockwise it ...

Caravan fridge problems are due to poor ventilation, inadequate cable size and/or insufficient power to drive them. Here’s how to fix them.

The current (February 2018) Australian RV rules and regulations are outlined here by Collyn Rivers of RV Books. Those for trailers under 4500 kg will change in late 2018 but details are not yet available

Caravan suspension has requirements that are very different from tow vehicles. This is only too often misunderstood. Here’s why and what it should be.

Caravan Tare Weight issues mainly arise about what’s included and what’s not. Water is not, nor may be optional extras. This article reveals all.

For safe towing, a caravan must be tow ball heavy. This article explains why and how to get caravan tow ball weight right.

The maximum caravan weight safe to tow depends on what tows it. This article by Collyn Rivers explains why – and how to know what it is.

A conventional caravan must always be a compromise. This is because it is towed via hitch at some distance behind the tow vehicle’s rear wheels. If that vehicle sways clockwise, that hitch overhang causes (not just permits) the caravan to sway anti-clockwise. If the caravan sways clockwise, it causes the tow vehicle to sway anticlockwise.  ...

When choosing a caravan tow vehicle there are key caravan towing specifications that you need to know. This article explains what they are and why they are vital.

Claims for dual-cab ute towing capacity mislead caravan buyers. That ute must weigh enough to keep a caravan steady. If not, the caravan tail wags the towing dog.

Do caravans need independent suspension is a marketing rather than an engineering issue. This article explains why caravan beam axles are generally better.

Updated May 2020Caravan Declared Mass A caravan’s Tare Mass is legally its weight when ‘ready for service’ as it leaves its maker. That weight, recorded on a Compliance plate is often incorrect. This article explains why RV Books states: Do Not Trust Caravan Declared Mass.Most caravan makers produce basic units. The weight of that basic unit ...

Driving across Africa is now politically impossible. Our 1960 such two-way expedition across all Africa was the very last known. We started in mid 1959 – and exited the Sahara on 28 April 1960. The track was closed that night. It has never re-opened. Further, Africa’s centre, right down to Zambia, has ever since, been far ...

Electrical converters in RVs supply 12 volts from 230 volt power. They work well from 230 volts, but not for long-term camping. Here’s how to fix the problem.

Fifth wheel caravans are safer than conventional caravans. They are fundamentally more stable on road and far less likely to overturn. Further, because up to two metres more is usable space, they provide that much more living area. They increasingly challenge caravan and motor home sales.

RV users free camp safely in Australia to avoid often crowded caravan parks, some 500 km apart. Many self-contained RVs need only a safe space overnight. This article shows how to free camp safely in Australia.

Knowing how much solar input is coming in like measuring rainfall. It uses units called Peak Sun Hours instead of inches or millimetres. Here’s how and why.

What is the most suitable caravan layout for me? This article shows how to choose the best caravan layout to suit your individual needs.

Camping in Australia has no national or state-based definition. In New South Wales alone, over ten government authorities regulate camping on their land. Even the definition of camping is inconsistent across the related Acts.

Knowing how to locate mass correctly along the length of a caravan is vital. That applies both to its design and the owner’s loading. This article shows how to load a caravan safely – and why and how it matter doing so is vitally important.

Reversing a caravan is easy, but needs practice. This article will guide you through how to reverse a caravan if used in conjunction with doing it yourself.

Is four wheel drive needed for motor homes – what can travel where, with and without it. Here’s all you need to know if you decide to build or buy one.

Despite their very small batteries LiFePO4 jump starters really do work. This article by Collyn Rivers explains how and why. A lot of power (the rate at which energy is used) is needed. The amount of energy (the ability to perform work) required, however is surprisingly small. In the days of vintage cars, a strongish ...

Lightning frightens but lightning risk in caravans is very low. That risk however is far from random. Here’s how to reduce it yet further.

To make caravan fridges work as claimed, and draw less energy, is cheap, simple and easy. Many can be transformed. This article shows how.

Making caravans more stable is readily possible by design, loading, and tow vehicle use and choice. This article by Collyn Rivers explains how. It also provides practical guidelines for buying a caravan and tow vehicle, their loading and on-road usage. For a full technical explanation of why rigs can be unstable please see my Caravan and ...

The overhung hitch of a caravan tow vehicle can cause (not just permit) a caravan to sway. This sway annoys at low speed and is dangerous at high speed. Until recently attempts to limit such sway rely on friction to dampen and ideally prevent it. Unfortunately, mechanical sway-control has little value at speed.

Microwave oven power draw is far greater than many users think. In this article, RV Books’ Collyn Rivers explains why – and how. This is a particular problem in caravans and motor homes. Their deep cycle lead acid batteries cannot sustain the energy draw they require. AGM and lithium-ion batteries are thus better suited.

Long end-heavy caravans have a need for a Weight Distributing Hitch (WDH). For all, though, it inherently reduces tow vehicle stability. Here’s how and why.

Quietening caravan water pumps is simple to do at no or trivial cost. This article from RV Books’ Collyn Rivers shows how.

Reducing caravan sway (yaw) necessitates minimising its causes – and only then adding devices promoted as reducing it. This article shows why and how.

Promotion and sale of units for retarding rust electronically (for RVs etc) was banned in the USA in the 1990s. One brand (CECI) is now banned in Australia. Their sale is an offence under Section 218 of the Australian Consumer Law. The details are at the end of this article). In 2015 the NSW Fair Trade ...

On the surface, the Australian RV industry is healthy. But underneath all is far from well. A  great deal needs changing. There are lots to do. RV Books explains the RV industry changes needed.

Solar is now so cheap that the main limitation is the space available for the solar modules. It is not possible to have too much solar. Ample solar prolongs battery life. It also and ensures at least some output during overcast days. There is no risk of overcharging, nor overloading the associated solar regulator. That ...

This article explains safe caravan and motor home heating using diesel or gas. It explains how it works, what is available and how to safely install it. To ensure safe caravan and motor home heating it must be done correctly. Apart from a build-up of carbon monoxide, there is a risk of oxygen deprivation. For a ...

Safe toilet chemicals are essential, but some toilet chemicals kill essential bacteria in septic and environmental systems: some are toxic – this article explains all.

Until recently sleep apnoea machines for camping drew too much energy for use on solar. It’s now feasible using the approach in this article.

Knowing the solar input available for caravans is vital, especially up north. This article shows how to know that available and increase it too.

This article shows the sizes and lengths of electric supply cables for caravans and motor homes legally required in Australia and NZ.

That most popular is to follow the shortest route around Australia’s coastline. It is 13,800 or so kilometres (8,625 miles). Allowing for diversions (such as Tasmania or Alice Springs and Uluru), this distance may double. With wind speeds as high as 60 km/h, and particularly if you are towing a caravan, fuel usage will be much ...

Caravans and their tow vehicles have much the same accident rates as other forms of motor transport. Their main type of accident, jack-knifing and roll-over, however, are different. Here are ten tips for safe caravan towing.

Here is a listing of the top 10 Australian RV Apps. They are ranked in subjective order of how likely they are to save a life. Click on an app image to go to the app’s download page.

A caravan heavier than its tow vehicle is like a dog with an overweight tail, it may sway so much its tow vehicle cannot control it. Swerving strongly at speed to avoid a head-on collision induce this. So too may a strong side wind gust. That wind may be natural or from a close passing truck. 

A weight distributing hitch is not needed if the laden weight of the tow vehicle is equal to or exceeds that of the laden caravan. Nor is a weight distributing hitch needed for any trailer under about 4 metres.

TV interference from LEDs is an issue worldwide. It is mostly caused by LEDs in the same home (or RV) as the TV. This can be checked by turning them off. Another indicator of TV interference from LEDs is good daytime reception until lights are turned on. In the worst cases, TV reception is unwatchable, ...

Ultra light caravans and fifth wheelers are rare, but feasible. Here’s how it is be done using hi-tech materials. One, over 9 metres, was under 2000 kg.

Tow ball weight pushes down the rear of the tow vehicle – thereby increasing the weight on its rear tyres. A WDH, in effect, is a semi-flexible springy beam that levers back up the rear of the tow vehicle and levers down its front. In doing so, however, it reduces the imposed load on the ...

Correct weight distribution hitch setting up compensates caravan tow vehicle front end lift but introduces instability if too tight. Here’s why.

What off-road really means is terrain that necessitates a serious 4WD – but many RV vendors may define it as anything lacking a centre white line. Compounding this, many RV vendors make claims about what can go where that are close to absurd.

Wheels falling off trailers, wheel studs breaking and wheel nuts loosening still happens. Here is why it happens, and how to prevent it. Wrecked wheel bearings and fractured stub axles are also common. That fastenings such as wheel nuts may be caused, not just permitted, to loosen is rarely covered in engineering training. The causes ...