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Proper Air pressure for UAS?

Old 12-20-09, 11:03 PM
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Originally Posted by PK_Celsior
i was wondering if you purchased upgraded bags??? When i was helping my friend install his UAS the bags said 110ish psi max :O. unless UAS send out different bags depending on what type of vehicle you had ???
I have the first set of bags made for the 2nd gen Gs

Originally Posted by Spyder78
Most Lexus' use the Aero Sport


while they do say Max PSI 110, most people ride with them at more pressure. Like James does. When I want to 4x4 mine I can get them up to 170psi.
I can pressure MAX mine to 167 max on my digital gauge, but thats once kitted and in a stupid parking lot or going in straight into a parking spot on a hill

Originally Posted by chrispy
Yup, you can see that I was rotating it periodically. I guess I've been too busy to check on it lately. Oh well, it's all fixed now with the new brackets pictured.
was there a $$ for the updated hardware ? I need to call zack and find out. I wouldnt want a blow out from rubbing from riding lower. since I have seen the rub marks
Old 12-20-09, 11:56 PM
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Chris the hardware isnt much less than $200 shipped if I remember correctly.
Old 12-21-09, 07:02 AM
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wow thats some high psi in the bags. is the ride pretty stiff riding at 100+ psi? my old car that was bagged was 45 in the front and 30 in the rear.
Old 12-21-09, 09:32 AM
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most bags should be at 200 max. I know my Ksports are from what the ksport rep said. Also assuming that they chose a 200 PSI tank.. ude need a 200 PSI Max back.. me thinks.
Old 12-21-09, 11:53 PM
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Originally Posted by vwynn
most bags should be at 200 max. I know my Ksports are from what the ksport rep said. Also assuming that they chose a 200 PSI tank.. ude need a 200 PSI Max back.. me thinks.
Your Ksports are a different beast altogether when compared with the UAS bags. Your Ksport uses a Sleeve bag as well as a bellows. A sleeve bag differs from a bellows by the amount of pressure that it can hold as well as a lower load rating.

As far as the ability to air up to 200 psi, when you only have 200 psi in the tank would be impossible, since the air line would soak some of the pressure as well as all of the components. That is why most of us who use a 200 psi switch, can only fill up to around 170.
Old 12-21-09, 11:54 PM
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exactly, and thanks for the info ,
Old 12-21-09, 11:56 PM
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Originally Posted by IXI187IXI
wow thats some high psi in the bags. is the ride pretty stiff riding at 100+ psi? my old car that was bagged was 45 in the front and 30 in the rear.
Just reporting psi doesnt help if we are all using different bags, or different struts. For example most people that I know who utilize the UAS bags and KYB struts usually ride around 100 PSI in the front and between 80 to 90 in the rear. If the bags are different or the strut used differs than the PSI would differ.
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