COMPARISON: AIR COMPRESSORS
STEPPING up into a twin piston compressor completely changes the ball game, in more ways than one. They typically step up a size compared to single piston compressors, allowing them to pump out two to three times the litres per minute of their smaller siblings. It means pump-up times can be halved, or you can pump up multiple 4x4s without needing to set-up camp for the day.
The increased flow rate also means you’re stepping into air-tool territory. While air tools are seen as somewhat extreme for general touring duties, they can be used for anything from changing a spare tyre to winding down the legs of a camper trailer.
Of course, it’s not all sunshine and roses. The extra work translates into extra heat and extra current draw, and the compressor itself can get red-hot. Some items are protected in hard cases, like this set-up, but others you’ll need to stack carefully if you’re throwing it into the back of your four-wheel drive.
The ARB unit draws a huge 68.6amp through twin fuses, so you’ll need the engine running while you pump up. The extra size and weight increase is something to consider as well, especially if you’re in a SWB 4x4 or regularly packed to the hilt.