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    air in forks

    Ive searche through my clymers manual but couldnt seem to find my answer. How much air do I need to put in my forks once I'm done replacing the fork seals?
    I didnt do it I swear !!

    --------------------------
    1982 GS850G

    1980 GS1100L

    #2
    Zero -- install Progressive or Sonic fork springs and use no added air.
    1983 GS850G, Cosmos Blue.
    2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
    2015 Yamaha FJ-09, Magma Red Power Corrupts...
    Eat more venison.

    Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.

    Celeriter equita, converteque saepe.

    SUPPORT THIS SITE! DONATE TODAY!

    Get "The Riding Obsession" sport-touring motorcycling podcast at https://tro.bike/podcast/ or wherever you listen to podcasts!

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      #3
      Man wish I could afford them right now but I'm on a tight budget and have already gone over it lol.
      I didnt do it I swear !!

      --------------------------
      1982 GS850G

      1980 GS1100L

      Comment


        #4
        If you're a bit light in the wallet, then use a cutoff wheel or find someone with a metal saw to cut about four or five inches off your stock springs (this will give you a higher spring rate), install commensurately longer spacers made from PVC pipe, and ride happy...

        If your springs are spaced more closely at one end, cut that end. The exact amount you cut isn't important -- just make sure they end up the same.

        Try a few dumpsters near construction sites if your budget doesn't stretch to a couple bucks' worth of PVC pipe.
        1983 GS850G, Cosmos Blue.
        2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
        2015 Yamaha FJ-09, Magma Red Power Corrupts...
        Eat more venison.

        Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.

        Celeriter equita, converteque saepe.

        SUPPORT THIS SITE! DONATE TODAY!

        Get "The Riding Obsession" sport-touring motorcycling podcast at https://tro.bike/podcast/ or wherever you listen to podcasts!

        Comment


          #5
          Originally posted by kparkfan View Post
          Ive searche through my clymers manual but couldnt seem to find my answer. How much air do I need to put in my forks once I'm done replacing the fork seals?
          First off, nearly 1000 posts, and you don't have Basscliff's website bookmarked? Inconceivable! Second, the factory service manual says 11.38 PSI.

          A link!



          The procedure for airing up the forks in on page 313.

          Nice thing about the online manual is that you can print out only the sections you need, and you don't have to worry about getting them dirty in the garage either.

          Comment


            #6
            Originally posted by bwringer View Post
            If you're a bit light in the wallet, then use a cutoff wheel or find someone with a metal saw to cut about four or five inches off your stock springs (this will give you a higher spring rate), install commensurately longer spacers made from PVC pipe, and ride happy...

            If your springs are spaced more closely at one end, cut that end. The exact amount you cut isn't important -- just make sure they end up the same.

            Try a few dumpsters near construction sites if your budget doesn't stretch to a couple bucks' worth of PVC pipe.

            Also, listen to this. If my thoughts are correct, the air just increases pre-load, which is essentially the same thing you do if you cut the springs and install a longer spacer. However, you don't need to periodically check your spacers, like you do the air. ALWAYS follow the K.I.S.S. principle whenever possible.

            Comment


              #7
              If you don't have the proper hand pump and air pressure guage (0-20 lb), don't put air in your forks

              Above all, do not use a compressor!

              Unless you want to change your seals again
              1978 GS 1000 (since new)
              1979 GS 1000 (The Fridge, superbike replica project)
              1978 GS 1000 (parts)
              1981 GS 850 (anyone want a project?)
              1981 GPZ 550 (backroad screamer)
              1970 450 Mk IIID (THUMP!)
              2007 DRz 400S
              1999 ATK 490ES
              1994 DR 350SES

              Comment


                #8
                I use a low pressure air regulator and set it at the pressure I want in my forks. My book says 10-15 psi though.

                Comment


                  #9
                  Originally posted by Turtleface View Post
                  Also, listen to this. If my thoughts are correct, the air just increases pre-load, which is essentially the same thing you do if you cut the springs and install a longer spacer. However, you don't need to periodically check your spacers, like you do the air. ALWAYS follow the K.I.S.S. principle whenever possible.
                  The air increases the spring rate, just as cutting the springs does. Adding spacers to a spring that has not been cut increases ride height.
                  Ed

                  To measure is to know.

                  Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                  Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                  Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                  KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

                  Comment


                    #10
                    [QUOTE=Nessism;1171313]The air increases the spring rate, just as cutting the springs does. Adding spacers to a spring that has not been cut increases ride height.[/QUOTE

                    Wouldn't it add stiffness to the ride also? I know mine are, but I prefer the added height.

                    Comment


                      #11
                      wow alot of options lol. I have a hand pump that I use for bicycle tires wouldnt that work for putting the air in? I'm not one for cutting things as I have a habbit of messing things up. I guess I'm saying I'm affraid that if I go cutting on the springs that I will screw them up and prolong my getting out on the road. Maybe once I get the forks apart and see the springs I might feel a little more confortable.
                      I didnt do it I swear !!

                      --------------------------
                      1982 GS850G

                      1980 GS1100L

                      Comment


                        #12
                        [QUOTE=jwhelan65;1171320]
                        Originally posted by Nessism View Post
                        The air increases the spring rate, just as cutting the springs does. Adding spacers to a spring that has not been cut increases ride height.[/QUOTE

                        Wouldn't it add stiffness to the ride also? I know mine are, but I prefer the added height.
                        Yes, it will add stiffness. If you skip the air though the overall stiffness will be about the same.
                        Ed

                        To measure is to know.

                        Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                        Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                        Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                        KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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