On Board Air

I don't have air diffs but have looked long and hard at them and I decided that if I were to go to that length I would have a dedicated compressor only and not worry about additional onboard air. My thoughts were to try and keep it as simple as possible and therefore also keep the weight down too.

The cost is not so much different at all actually, ARB single and the smaller Viair on board systems (enough for our small tires) cost about the same.

Could also powdercoat any tank i get hold of, local shop with high quality does it for cheaps for me. Nothing like the US powder coating wich is a joke.
so any tank would do as long as I can fit it underneath.

Powertank regulator also cost a lot so the price difference between them is not the biggest issue for me.

I have a 5cfm electric compressor and a small receiver in mine....compressor behind my seat and receiver on the prop tunnel.

It's noise makes me jump so an alternative is on the way soon.

ARB compressors with the airline kit are ideal. Ive got the twin one with a small air tank under the back in Ulysses. Compressor under the bonnet isnt too noisy either. Fills the airtank via an air solenoid so I can isolate it full or empty as I want. Airline socket on the back. Its enough without the tank though...

ARB ckma12 is on the way. Double was too expensive this time.
Tank later if I either find one or buy one cheap that I can fit underneath.
Usually buy stuff like this abroad, but this time Norwegian Arctic Trucks was cheaper.

Thanks for all help and nice pics!
Think I will place it approx like yours Riccy.

Nice one

I think the single cylinder one will work just as well, but maybe slightly slower for tyre inflation. The ARB ones are great and come with a good quality wiring harness and cabin switch.

To mount it where I have you will need to move the screenwash bottle, this gives you two threaded holes and you will find a third just beside the coolant reservoir bottle, these give you convenient points to mount a L shaped plate for the compressor. M6 bolts for the holes there and use some rubber washers between the plate and body to quieten it a bit. I just made some brackets to attach the screenwash bottle to the body as in pic above and found all the hoses and wires reach with no modification. Bonus side effect is the exhaust manifold heats the screenwash a bit on cold days.

You can easily buy push-fit airline adapters to use longer runs of the blue pipe, this is how I have fitted the tank and air socket further away from the compressor. I think I used 1/4" BSP fittings to 8mm pipe for it with some PTFE tape/compound to make up the slightly wrong thread (all ARB stuff is NPT thread for the Americans annoyingly and ARB air sockets use their own unique fitting, meaning you need their hose and accessories).