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Old 10-13-2010, 09:05 PM   #1 (permalink)
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lowest pressure for hydro bumps

what is the minimum nitrogen charge you can have for the hydro bumps?

im running radflo bumps and there are currently charged with 150lbs but wasnt sure what the minimum pressure is without doin any damage
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Old 10-13-2010, 09:54 PM   #2 (permalink)
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I believe FOA says 50psi is OK.

I ran 100psi in my radflo bumps for almost 2 years with no ill effects. I now run 200psi and like it better but obviously every rig and suspension is different.
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Old 10-14-2010, 09:58 AM   #3 (permalink)
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I run my 2.5"X 2.0" travel kings as low as 50 psi. I have yet to set them higher than about 80 to 90 psi.
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Old 10-14-2010, 11:27 AM   #4 (permalink)
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Uh have you called radflo?
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Old 10-14-2010, 02:13 PM   #5 (permalink)
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What damage would a low pressure cause? As long as it's got oil the only one I can think of is the bump not being real effective.

I run my 2.5 x 4.0" kings at 30PSI. I do that cause with only 7" of up travel higher pressures make for a rough ride on the trail. For 4400 racing that would need to be raised of course!
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Old 10-14-2010, 07:08 PM   #6 (permalink)
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7" is plenty of uptravel. Air bumps are for hard hits not to make up for lack of compression valving. Destroke the bumps and add some compression valving.

The most travel you'll realistically see out of a solid front axle is 16". 8" of uptravel unless you got something crazy going on or waant a sky scrapper.

Quality or quanitiy when it comes to travel.
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Old 10-14-2010, 09:11 PM   #7 (permalink)
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thanks guys , reason i asked is because at 150lbs when the bump stops hit it jarred the truck pretty bad

at 50psi much smoother and what i was looking for
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