The 4WD Systems air compressor respresents excellent value for money when comparing it to the competitor's products. It delivers a huge 1.94 cf or 40L per minute. Despite it's high volume output, the compressor is small, light and compact.

	Main Features
	Heavy duty 4.5m hose kit	Long 2.5m power cord
	Weight approx 3 kg	Current draw 13-20 amps
	Fused wiring	Duty cycle 40 mins at 30 psi
	High pressure - 150 psi	Stainless steel valves
	Thermal overload protection	In-line pressure gauge
	Great carry bag	Inflates tyre 31.5x10.5x15" from 15-30 psi in 130 seconds

Why buy a compressor?

The use of an air compressor is mandatory for many outback and desert crossings and for driving on the soft, sandy beaches of the Australian coastline. Lowering tyre pressures in these situations is the only method of safely obtaining sufficient bouyancy and traction to travel through these types of terrain.With normal pressure you simple sink and "you're stuck", yet progressively lowering your tyre pressure allows you to literally float on top and drive almost normally.

It is not unusual to deflate your tyre pressures to below 10psi with 12-16psi being the normal range whenever the sand is soft. However there comes a time when the 4WD driving finishes and you must reinflate the tyres to continue your journey and this is where the problems start. If you don't have a compressor then you can only drive slowly for a short distance on a hard surface to avoid overheating and tyre or rim damage. It is important to be very careful when cornering to ensure the tyre doesn't roll off the rim or otherwise "break the bead".

So what sort of compressor do you need?

There is a wide range of compressors on the market which are rated by the Manufacturer's cubic capacity rating in cfm (cubic feet per minute). It is this capacity which dictates how fast they are capable of inflating a tyre.

So the best compressor to get is usually the one with the highest cfm rating (price permitting) - it simply takes less time to inflate and usually the bigger they are the better the quality.