Shock troubles...
  • RedneckRider181
    Posts:158
    Joined:Wed May 14, 2008 4:44 pm
    Shock troubles...

    by RedneckRider181 » Thu Apr 02, 2009 6:57 pm

    Dialing in my suspension...

    Got the forks set alot better than they were, but while educating myself on the shock, i kinda released the pressure on it :lol: .

    It already has pro-action front and back, i weigh about 160 with gear, and the bike is about 220 i'm guessing. (i'd rather not say what kind of bike it is, ;) .) i mainly ride moto and supercross.

    I don't have access to nitrogen, but i know compressed air will work, it just varies with the temp.

    About how many psi should i put back into it?
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    amaviper
    Posts:463
    Joined:Sun Aug 26, 2007 7:04 pm

    by amaviper » Thu Apr 02, 2009 7:59 pm

    Oooops thought you were speaking about the forks first post :oops:

    KX250....

    •Inject nitrogen gas to a pressure of 50 kPa (0.5 kgf/cm², 7 psi) through the valve on the gas reservoir.
    •Check the rear shock body and gas reservoir for oil and gas leaks.
    ••If there are no leaks, inject the nitrogen gas up to the 980 kPa (10 kgf/cm², 142 psi) pressure.
    '06 CRF450X; '07 CRF230F; '03 CRF230F; '03 XR100R; '03 XR70F; '79 KZ1300 A-1; '71 SL350 K1
  • Big rig

    by Big rig » Thu Apr 23, 2009 1:52 am

    DO NOT charge your shock with compressed air. The reason your shock is charged with nitrogen and not compressed air is because nitrogen is an inert gas, which means it won't react with anything, if you use air it has the potential to react with temperature and oil and could explode. That is why they use nitrogen in hydraulic accumulator's.
    You might think i'm blowing wind up your rear but it does happen.
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    CerealKiller
    Posts:18
    Joined:Mon Dec 29, 2008 3:10 pm

    by CerealKiller » Thu Apr 23, 2009 10:01 pm

    I'm pretty sure the reason to use nitrogen instead of air is mainly water content. This is two-fold, the water content makes the expansion/compression unpredictable as temperature varies, and it can lead to rust.

    I cant imagine air making something "blow-up", but he may be smarter than I.
  • Asmith
    Posts:14381
    Joined:Mon Apr 10, 2006 7:52 am

    by Asmith » Fri Apr 24, 2009 5:54 am

    CerealKiller wrote:I'm pretty sure the reason to use nitrogen instead of air is mainly water content. This is two-fold, the water content makes the expansion/compression unpredictable as temperature varies, and it can lead to rust.

    I cant imagine air making something "blow-up", but he may be smarter than I.


    For something to blow up you need oxygen, fuel and an ignition source.

    In this case shock oil is fuel, the compressed air he was going to use would have the oxygen and the heat generated in the shock the ignition source.
  • Big rig

    by Big rig » Sat Apr 25, 2009 11:43 pm

    CerealKiller wrote:I cant imagine air making something "blow-up", but he may be smarter than I.

    Try covering your air filter with a plastic bag before you go riding, then you will see you need oxygen to make things burn

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