Aircon conversion

[Weasel]

Any probs people can point out with this plan...

Want to avoid whole air storage thing as its extra expense, extra room and extra work (but yes it has benefits of course), so wanted to wire aircon pump to the aircon switch in cabin for "on/off" (relayed via pressure switch), air exits pump into release valve, then into pressure switch, then out to tyre inflator.

Idea being the pressure switch will be fitted to cut off at say 80 psi for I dont get too much pressure backed up against the pump inline, and the release valve will be set to say 90psi so if pressure switch fails it will blow off and vent air to prevent aircon pump getting killed.

Any probs with that? And where do you buy pressure release valves and pressure switches???

[Cloggy_NZ]

Talk to the guys at Dynaflow, 12 Seaview Road in Lower Hutt.
They will be able to steer you in the right direction.
And when you get all this rigged up, can you post some pics and specs?
Thinking of doing the same, got some diagrams etc. just haven't done the shopping yet.
You can let us all know where to buy the bits and how much

[91Rangie]

Sounds like your way would be more expensive and more complicated.
All I did was get a 12v carry tank and compressor from supercheap for $49.95 had its own safty blow off valve and 100psi cut off switch.
Moutnted the tank in the rear ran a pipe from the a/c compressor to the tank did it all in about an hour.
I used a copper tube and flare fittings handy being a Gasfitter .
As for taken up space that depends on the size of the tank and where you put it.

[85BJ73]

I converted air con pump, you will need to lubricate it, as air con gas has a lubricant in it (so I am told), I set up an auto oiler like you see on air controlled machinery, put a filter after it to take the oil and water out of the air. You will need to unload the air con pump so itis not starting under pressure.

[KiwiBacon]

One problem with no reservoir is moisture in the air.
The air tanks let the air cool and the moisture condense out (then you drain it). If you're running an 80psi line straight to your air line then you won't be able to get the moisture out.

Whether this is a problem will depend on the humidity where you are and what you're using the air for. For tyres it probably doesn't matter, but for air tools it would.

[dazza85]

Lots of info here ...

http://www.offroadexpress.co.nz/viewtopic.php?f=18&t=7249&st=0&sk=t&sd=a&hilit=air+compressor

Thou I got riped off "bigboy" took my money and I still haven't seen the compressor so watch out for him