What psi does P38 Air Suspension run at?

I think the system works around 110-115 psi, as for what is pumped into each bag, I don’t have a clue.

the bags vary based on height, as low as 30 psi to as much as 70 psi depending on load weight, level height, terrain, etc. I used a gauge on my system temporarily and it drove me bananas at the extreme changes from one street block to the next.the storage tank is capable of 150 to 180 psi at 4 gallons. other than the bag pressures, all the info is on the rave and eas sid.

Thanks for your reply, Chris.

95classiclwb said:

the bags vary based on height, as low as 30 psi to as much as 70 psi depending on load weight, level height, terrain, etc. I used a gauge on my system temporarily and it drove me bananas at the extreme changes from one street block to the next.the storage tank is capable of 150 to 180 psi at 4 gallons. other than the bag pressures, all the info is on the rave and eas sid.

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Thanks for the info. My copy of "RAVR" is corrupted unfortunately. What is..."eas sid"... that you refer to please?

no clue what RAVR is... but if you really mean RAVE, just download it again...

10 bars top pressure for high mode , 8 bars normal.

Enviado desde mi SM-A720F mediante Tapatalk

Electronic Air Suspension, System Information DocumentS… eas sids.

The pressure is irrelevant, it's the volume of air and the weight it is trying to support. If the car weighs 2 tonnes and the weight is evenly distributed, that's 500kg per corner. So the pressure will be whatever it needs to be to raise the car to normal height. Load the boot so the rear bags are supporting 750 kgs each and the pressure will go up to lift the car to the same height. The system stores air at a pressure of around 150psi which is greater than the pressure needed to lift the car under all circumstances so the working pressure will be lower.

RRToadHall said:

no clue what RAVR is... but if you really mean RAVE, just download it again...

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I TRIED to amend my spelling mistook!?!?!, but as I noticed it more than 15mins after I had made the post, the "system" wouldn't allow me to. Can't download a replacement copy of RavE currently, as I am restricted by my mobile - Cellphone for the benefit of our North American friends - data plan. Thanks for the advice.

annette said:

10 bars top pressure for high mode , 8 bars normal. Enviado desde mi SM-A720F mediante Tapatalk

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Thanks for the info!

95classiclwb said:

Electronic Air Suspension, System Information DocumentS… eas sids.

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Thanks for that...I have used the search facility several times, but despite receiving different responses to my search request, I've not come up with the docs. I'll try searching again using; Electronic Air Suspension, System Information DocumentS Many thanks, Mike

Richard_G said:

The pressure is irrelevant, it's the volume of air and the weight it is trying to support. If the car weighs 2 tonnes and the weight is evenly distributed, that's 500kg per corner. So the pressure will be whatever it needs to be to raise the car to normal height. Load the boot so the rear bags are supporting 750 kgs each and the pressure will go up to lift the car to the same height. The system stores air at a pressure of around 150psi which is greater than the pressure needed to lift the car under all circumstances so the working pressure will be lower.

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Many thanks for your input, Richard! Mike.

The compressor cuts off at around 12 bars. The car will start to lift at around 6 bars.

dave3d said:

The compressor cuts off at around 12 bars. The car will start to lift at around 6 bars.

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Dave, thanks for your input! Mike.

Like others have said, the system pumps air in until the P38 reaches a certain height. The height sensors are what tell the compressor to turn on and off based on height, not pressure. That is how it gives you a level vehicle. When I have operated manually, I measure from the center of the wheel to the fender lip to make things even on both sides. I think the heights are listed on the main site. The way that the airbags roll over themselves creates a situation where more air expands the bag, increasing the height of the car and volume of the bag. This gives you a raised body without increasing the psi much thus preserving the ride at off roads heights. This hits on why the EAS is a great idea, the ability to raise the vehicle without significantly changing the spring rate. This simply isn't possible on with a leaf or coil spring. Its hard to fault the concept.

here is one of the EAS docs, the other is in the RAVE http://rave.stringsandints.com/eas.pdf