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    progressive fork springs

    Have a used set to put into the wifes hawk, does anyone know the lengths to cut the spacers to?

    thanks

    #2
    I would assume spacer length should be decided by the amount of preload desired.

    Insert the spring into the fork leg, measure the distance from the top of the spring, to the top edge of the stanchion (measurement A), measure the distance, on the cap, from the surface that mates to the top of the stanchion to the surface where the spring seats (measurement B) A-B will give you the spacer length with no preload. Any added length will be preload.
    whatsoever your hand should find to do, do it gladly, because there is no work, love, knowledge, or wisdom in the grave...

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      #3
      Mine are 3.5 inches. I saved them as I used the stock spacers when I installed emulators. The stockers being a bit shorter.
      Mark
      88 HawkGT (original owner)
      99 Concours
      02 VFR800

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        #4
        a side note (if somewhat anal retentive): Remember that if you use a differant material such as pvc pipe as a spacer, it will throw off the internal volume of the forks, so adjust fork oil level as needed (thicker material, less oil needed, thiner = more)
        Mike/Kilter
        They smile because I'm different--I laugh because they are all the same

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          #5
          Bump
          BIKES: Honda: RC31 Racebike/ NT650 Streetbike, DUCATI: None at the moment.
          Former MSF Rider Coach / Trackday Instructor/ Expert Roadracer #116
          "I'd rather ride a slow bike fast than a fast bike slow."

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            #6
            I believe with the (Race tech springs and gold valves) installed JD says, the spacers should be 1" above the fork stanchion (before the cap is pushed down to tread in)

            This would be a “starting point” to figuring out your sag …

            I'm not sure about the Progressive springs (did some on Artemaes's Hawk) here but the PO sent the spacers and I don’t recall there measurements.

            JD would know !
            "Hawk Porn" http://picasaweb.google.com/11124379...eat=directlink 1990 NT650-Penske 8981, Race-tech Springs & Gold Valves, Steve Lenac six-piston caliper & EBC rotor,SS Brake lines Ft / Rear lines through SSA ,VFR brake lever, F2 front wheel, F-120/70 R-160/60 Dunlop Roadsmart, Full-Supertrapp Exhaust, Stage 1 Jet kit, K&N Filter, Corbin Seat, Pro-Tec Clip-On's/ Past Rides...1986 VFR700F2 Interceptor / 1979 Yamaha Rd400 Daytona Special

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              #7
              Originally Posted by ovlovder View Post
              I would assume spacer length should be decided by the amount of preload desired.

              Insert the spring into the fork leg, measure the distance from the top of the spring, to the top edge of the stanchion (measurement A), measure the distance, on the cap, from the surface that mates to the top of the stanchion to the surface where the spring seats (measurement B) A-B will give you the spacer length with no preload. Any added length will be preload.
              What he said. I left mine probably 1/2 inch above the top of the fork tube (I didn't measure it).
              Brian - Richland, WA
              1991 Hawk GT
              1997 VFR

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