Old GS handling limitations

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  • RichDesmond
    Forum Sage
    Past Site Supporter
    • Jul 2011
    • 2757
    • NoVa

    #46
    Originally posted by glib
    I guess it's just a hazard of setting up used parts but I have to guess at the initial preload setting (the wire clip) and it's not an easy adjustment once installed.
    If you have to redo it you can work from the ratio of shock travel to axle travel to figure out how to change preload to get the sag you need. That way you only have to do it once.
    '20 Ducati Multistrada 1260S, '93 Ducati 750SS, '01 SV650S, '07 DL650, '01 DR-Z400S, '80 GS1000S, '85 RZ350

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    • Guest

      #47
      Originally posted by glib
      I was about to go out and move the forks but the tubes have holes that will leak once moved out of the fittings that trap the air. Even ten mm will move them out from under the seal. Not sure what to do now. I'd have to find a way to seal the holes.
      I just use some JB weld on mine, then lightly sand and buff it smooth.

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      • limeex2
        Forum Sage
        Past Site Supporter
        • Dec 2012
        • 1498
        • Stillwater, Mn.

        #48
        Nice to know on the JB weld. I would like to seal mine up. I would like to get rid of the equalizer as it makes fork removal easier even when the rubber seals are plenty lubed up.
        Current Rides: 82 GS1100E, 00 Triumph 955 Speed Triple:twistedevil:, 03 Kawasaki ZRX1200, 01 Honda GL1800, '15 Kawasaki 1000 Versys
        Past Rides: 72 Honda SL-125, Kawasaki KE-175, 77 GS750 with total yosh stage 1 kit, 79 GS1000s, 80 GS1000S, 82 GS750e,82 GS1000S, 84 VF500f, 86 FZR600, 95 Triumph Sprint 900,96 Triumph Sprint, 97 Triumph Sprint, 01 Kawasaki ZRX1200, 07 Triumph Tiger 1050, 01 Yam YFZ250F
        Work in progress: 78 GS1000, unknown year GS1100ES

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        • Guest

          #49
          Originally posted by limeex2
          Nice to know on the JB weld. I would like to seal mine up. I would like to get rid of the equalizer as it makes fork removal easier even when the rubber seals are plenty lubed up.
          I want to get rid of that equalizer tube as well, been thinking of taking it to a machine shop and have two spacers made.

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          • glib
            Forum Sage
            Past Site Supporter
            • Jul 2014
            • 1175
            • Stockton, CA

            #50
            Originally posted by mrbill5491
            I want to get rid of that equalizer tube as well, been thinking of taking it to a machine shop and have two spacers made.
            Is there any reason the equalizer should not be removed altogether if it's not going to be used and the tubes moved up?
            sigpic
            1983 GS1100ES (Bought July 2014)
            1983 GS1100E (Bought July 2014)
            1985 GS700ES (Bought June 2015) Sold
            On Christ the Solid Rock I Stand
            All Other Ground is Sinking Sand

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            • glib
              Forum Sage
              Past Site Supporter
              • Jul 2014
              • 1175
              • Stockton, CA

              #51
              Originally posted by RichDesmond
              If you have to redo it you can work from the ratio of shock travel to axle travel to figure out how to change preload to get the sag you need. That way you only have to do it once.
              Well I overshot adjusting the (rear Works shocks) and ended up at 23mm. If total wheel travel is 101 then it is also 23%. The next step back down in preload should put me at 30%. I think I'll go for a ride just to see how it feels before the next adjustment. I want to drop the front a bit too but I think one change at a time between rides is best to see if I can feel anything.
              Last edited by glib; 02-24-2018, 04:34 PM.
              sigpic
              1983 GS1100ES (Bought July 2014)
              1983 GS1100E (Bought July 2014)
              1985 GS700ES (Bought June 2015) Sold
              On Christ the Solid Rock I Stand
              All Other Ground is Sinking Sand

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              • salty_monk
                Forum LongTimer
                GSResource Superstar
                Past Site Supporter
                Super Site Supporter
                • Oct 2006
                • 14003
                • London, UK to Redondo Beach, California

                #52
                Originally posted by glib
                Is there any reason the equalizer should not be removed altogether if it's not going to be used and the tubes moved up?
                there are small holes in the fork legs... Some have jb welded. Some have really welded. I removed the centre hose and blocked all parts with correct size bolts and sealant. Left the collars in place.
                1980 GS1000G - Sold
                1978 GS1000E - Finished!
                1980 GS550E - Fixed & given to a friend
                1983 GS750ES Special - Sold
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                • glib
                  Forum Sage
                  Past Site Supporter
                  • Jul 2014
                  • 1175
                  • Stockton, CA

                  #53
                  Originally posted by salty_monk
                  there are small holes in the fork legs... Some have jb welded. Some have really welded. I removed the centre hose and blocked all parts with correct size bolts and sealant. Left the collars in place.
                  Yes I am thinking about which way to go with the holes. I was thinking a strong sealant would work if raising the fork legs put the holes under the upper clamps but haven't tried yet. The wire clip will have to go. (EDIT: Decided not to do this)
                  Last edited by glib; 02-24-2018, 04:33 PM.
                  sigpic
                  1983 GS1100ES (Bought July 2014)
                  1983 GS1100E (Bought July 2014)
                  1985 GS700ES (Bought June 2015) Sold
                  On Christ the Solid Rock I Stand
                  All Other Ground is Sinking Sand

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                  • Guest

                    #54
                    If you did the race tech emulators and heavier springs , why are you still using the air? Generally you braze the holes closed.

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                    • glib
                      Forum Sage
                      Past Site Supporter
                      • Jul 2014
                      • 1175
                      • Stockton, CA

                      #55
                      Originally posted by hjfisk
                      If you did the race tech emulators and heavier springs , why are you still using the air? Generally you braze the holes closed.
                      I'm glad you asked because I just raised my forks 10mm and by removing the cushions between the air collars and the top clamp I was able to keep the air sealed but without the extra air pressure my sag increased. Did you have to re-adjust pre-load after closing the holes?
                      sigpic
                      1983 GS1100ES (Bought July 2014)
                      1983 GS1100E (Bought July 2014)
                      1985 GS700ES (Bought June 2015) Sold
                      On Christ the Solid Rock I Stand
                      All Other Ground is Sinking Sand

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                      • Steve
                        GS Whisperer
                        • Jun 2005
                        • 35925
                        • southwest oHIo

                        #56
                        Originally posted by hjfisk
                        If you did the race tech emulators and heavier springs , why are you still using the air? Generally you braze the holes closed.
                        It's not that he is "using the air". There is ALWAYS air involved in the front suspension, it's a matter of ADDITIONAL air. The fork tubes on the 1100s have a small hole on the side of the tube that lines up with a collar that has a couple of o-rings that go around the fork tubes. Between the two collars is a small tube that equalizes the pressure between the two tubes. Not only does that ensure perfectly equal pressure in the two tubes, it allows the use of just one inflation valve, making it easier.

                        With the addition of proper springs (and emulators), you do not need any additional air, just whatever is trapped in the tubes when you put the cap on. Since he is moving the tubes in the clamps, those equalizer holes are now open to the atmosphere. There will be NO air trapped in the tubes that will be compressed along with the springs. Not only does that reduce the overall spring rate, it will also allow fork oil to be spit out.

                        If you don't move the tubes in the clamps, you can leave the holes open, but if you slide them past the equalizer collars, you MUST close them off, one way or another.

                        .
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                        • glib
                          Forum Sage
                          Past Site Supporter
                          • Jul 2014
                          • 1175
                          • Stockton, CA

                          #57
                          Originally posted by Steve
                          It's not that he is "using the air". There is ALWAYS air involved in the front suspension, it's a matter of ADDITIONAL air. The fork tubes on the 1100s have a small hole on the side of the tube that lines up with a collar that has a couple of o-rings that go around the fork tubes. Between the two collars is a small tube that equalizes the pressure between the two tubes. Not only does that ensure perfectly equal pressure in the two tubes, it allows the use of just one inflation valve, making it easier.

                          With the addition of proper springs (and emulators), you do not need any additional air, just whatever is trapped in the tubes when you put the cap on. Since he is moving the tubes in the clamps, those equalizer holes are now open to the atmosphere. There will be NO air trapped in the tubes that will be compressed along with the springs. Not only does that reduce the overall spring rate, it will also allow fork oil to be spit out.

                          If you don't move the tubes in the clamps, you can leave the holes open, but if you slide them past the equalizer collars, you MUST close them off, one way or another.

                          .
                          Thanks Steve. I actually did move them back down so that they are only raised by the amount equal to the rubber cushion (which I removed) between the top triple clamp and the air collars so that I could keep the wire snap ring in place and the holes inside the air collar. So now the air equalizer is still secure and functioning. I feel more comfortable with that--especially since if I want to drop the front down (which I know has consequences), I can just reduce the air pressure.
                          Last edited by glib; 02-25-2018, 08:42 AM.
                          sigpic
                          1983 GS1100ES (Bought July 2014)
                          1983 GS1100E (Bought July 2014)
                          1985 GS700ES (Bought June 2015) Sold
                          On Christ the Solid Rock I Stand
                          All Other Ground is Sinking Sand

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                          • RichDesmond
                            Forum Sage
                            Past Site Supporter
                            • Jul 2011
                            • 2757
                            • NoVa

                            #58
                            What springs do you have?
                            '20 Ducati Multistrada 1260S, '93 Ducati 750SS, '01 SV650S, '07 DL650, '01 DR-Z400S, '80 GS1000S, '85 RZ350

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                            • glib
                              Forum Sage
                              Past Site Supporter
                              • Jul 2014
                              • 1175
                              • Stockton, CA

                              #59
                              Originally posted by RichDesmond
                              What springs do you have?
                              1.0 (Based on calculator recommendation) And I like them...

                              I think I confused the different terms in the RaceTech instructions, free, static, race etc. and though using Sonic instructions, ended up measuring incorrectly in the front. I think I had too little sag on the ride last weekend and now, without added air, I have too much actually. After correcting this, the final result will be a lower front, smaller rake angle--maybe two degrees. Maybe that will help.
                              Last edited by glib; 02-24-2018, 09:08 PM.
                              sigpic
                              1983 GS1100ES (Bought July 2014)
                              1983 GS1100E (Bought July 2014)
                              1985 GS700ES (Bought June 2015) Sold
                              On Christ the Solid Rock I Stand
                              All Other Ground is Sinking Sand

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                              • Guest

                                #60
                                Originally posted by glib
                                Is there any reason the equalizer should not be removed altogether if it's not going to be used and the tubes moved up?
                                If you are talking about the complete set up, you'll need two spacers in the place of the units...at least on mine I do. Look at yours, mine support the bottom of the headlite mounts.

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