twin air tank D4.

**discowhite** · 24th September 2011, 04:25 PM

OEM tank modified to fit on the drivers side.
it will be plumbed into the first air tank via an on off valve, but will be fed by my arb compressor. in the event of the OE compressor failing i'll open the valve and turn on the arb,,,thats the plan anyway.

tacked in place, have one more bracket to make, some welding and then paint and air line.

tripple batteries, twin air tanks...what next?? 4 wheel steer?

cheers phil

**~Rich~** · 24th September 2011, 05:01 PM

Nice work Phil, are the dimensions the same as the standard tank?
Will you also be using it for pumping up tyres quicker as well because it would recover quicker than the standard tank when plumbed up to the ARB compressor with its pressure switch.

**101RRS** · 24th September 2011, 05:18 PM

Originally Posted by discowhite

but will be fed by my arb compressor. in the event of the OE compressor failing i'll open the valve and turn on the arb,,,thats the plan anyway.

cheers phil

But the ARB will not be able to get this tank up to the required pressure - max 150psi but more like 120psi - too low. If there is any pressure in the main system it will run back to your new one.

Why not buy a OEM air compressor from the UK for half the price here and turn it into a remote (portable pump) to charge your new tank?

Garry

**discowhite** · 24th September 2011, 05:54 PM

Originally Posted by ~Rich~

Nice work Phil, are the dimensions the same as the standard tank?
Will you also be using it for pumping up tyres quicker as well because it would recover quicker than the standard tank when plumbed up to the ARB compressor with its pressure switch.

it is a standard tank, just had to remove the mounts as they are for the LHS. and yes, it was initially thought of to help the arb compressor.

Originally Posted by garrycol

But the ARB will not be able to get this tank up to the required pressure - max 150psi but more like 120psi - too low. If there is any pressure in the main system it will run back to your new one ( thats what a check valve is for).

Why not buy a OEM air compressor from the UK for half the price here and turn it into a remote (portable pump) to charge your new tank?

Garry

who says my arb is standard and not moidified? anyway ide rather rely on 120psi than zero psi to get me out of trouble.

cheers phil

**bbyer** · 25th September 2011, 08:35 AM

Originally Posted by discowhite

who says my ARB is standard and not modified? anyway ide rather rely on 120psi than zero psi to get me out of trouble. cheers phil

I have often wondered if one could say thru a Faultmate modify the cut off pressure of the standard LR compressor down to say somewhere between 120 and 150 psi, then with two tanks, one would have a reliable system that would lift all four corners at pretty much the same time and quickly.

The air springs run somewhere between 90 and 140 psi so all would work pretty good with reduced tank pressures but more volume.

Your ARB is an oil free compressor so other than perhaps a moisture question, you already have a pretty good dual system. I am impressed.

**Graeme** · 27th September 2011, 09:06 PM

Originally Posted by bbyer

I have often wondered if one could say thru a Faultmate modify the cut off pressure of the standard LR compressor down to say somewhere between 120 and 150 psi

There's no max pressure parameter in Faultmate and LR produced software updates to change the max pressure rather than using whatever diagnostic m/c they use these days to change a parameter.

**TerryO** · 7th October 2011, 09:13 PM

Regarding where to find a air compressor that pumps above 150psi. Here is a link to a site that sells a compressor that can supposedly pump up to 300 psi.

Digital Air Compressor

cheers,
Terry

**discowhite** · 8th October 2011, 05:45 PM

Originally Posted by TerryO

Regarding where to find a air compressor that pumps above 150psi. Here is a link to a site that sells a compressor that can supposedly pump up to 300 psi.

Digital Air Compressor

cheers,
Terry

Air flow capacity will inflate a standard tyre in 8minutes (P195/65/R15 to 35PSI)
wow! thats mighty quick

......not....
ide like to know how a digital compressor works though?

cheers phil

**outasight** · 8th October 2011, 09:50 PM

Originally Posted by discowhite

ide like to know how a digital compressor works though?

cheers phil

You use your fingers Phil

I'm sure there will be an iComp out soon ...

Regards,

Les.

**TerryO** · 8th October 2011, 11:01 PM

Originally Posted by discowhite

Air flow capacity will inflate a standard tyre in 8minutes (P195/65/R15 to 35PSI)
wow! thats mighty quick

......not....
ide like to know how a digital compressor works though?

cheers phil

Actually my thinking was most people would already have a ARB or similar compressor that would take their sls system up to around 120-150 psi, which from reading in this thread is more then likely not quite enough for full off road extension height, and then top the bags off with this little pump for the extra psi to get them to full extension.

Yes it would be slow but if it does pump up to the required pressure (that normal compressors don't) then it is an additional $60 option for your D3/4's if your stuck off road in the middle of Bum f@#k Idaho and need full extension not just on road height.

Of course the sls system would have to be modified to accept any external compressor pumping up the SLS system in the first place, but not everyone would or could have a second tank and the other mods required to have a system like yours Phil, but there are other simpler options around. Personally I'm looking at buying Gordons kit as that is easy to fit and would do the trick if and when things go wrong. ....

cheers,
Terry

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if one could modify the LR compressor down to 120 psi

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