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Old 04-26-2006, 01:51 PM   #26 (permalink)
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Quote:
Originally Posted by aaron t
we have run this setup on my friends buggy. it is a heavy ass pig. the air rams work ok at best. unload like mad. they don't work anything like an airshock. airshocks work off of basic volume displacement. yes the co2 will quickly turn back into liquid. i am surprised you are even getting 1k psi out of them co2 is a really bad idea. at least normal compressed atmospheric air is 78% nitrogen and its cheap. with the 3" ram you will be able to suspend your rig with around 120# of air. you can run that off of your on board air comp.
we just cut down some poly bushings and used those in the eye of the ram. even kept the 1" pins.
air shocks are only $200 each. just pm a few of the vendors. albeit you may be too heavy for simple 2" body shocks.
The jackass is talking about my rig.

Its not that heavy, 560Lbs per rear corner of sprung weight rear, I do 3in rams and it requires about 80PSI to lift it.
F=PA
A=3.14(D/2)^2
D= piston diameter
P=pressure

At 80 PSI Im about 560Lbs per corner.

The weight also needs to take into account your mounting angle at 45 degree the ram needs to hold up alot more weight then vertical mounting.
Use geometry to figure the force if angled.

We have a jazillion page thread on this:
https://www.pirate4x4.com/forum/showthread.php?t=261171


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Old 04-26-2006, 02:21 PM   #27 (permalink)
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I remember talking to you and reading that thread for days a while ago. That is obviously where I got the ideas from. My cylinders would be as straight as possible and like I said, prob 5 inch bore.

You are using hudraulic rams in there if I remember rite. Do you have a problem with the seals failing and then losing suspending abilities?I figured if you kept air tool oil in there, you would be fine, but I was thinkin pneumatic cylinders since they are made to be run on air anyway.
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Old 04-26-2006, 05:11 PM   #28 (permalink)
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what is an exected pressure i can get out of an oba setup? if i run 5 inch cylinders, i should only need about 80psi or so, but if I can get 120psi in there, they would lift 2350lbs each, meaning I could lift a vehicle straight up and out of a hole or something. Basically, I would have an extra 2000lbs or so of lifting force on the front end if needed. The axles and mounts would then worry me, but it is possible.
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