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  • Fork Mod

    My 1200R looked a bit low in the front and nose dived on braking a bit more than I liked so I went with Sreamin Eagle performance fork oil "Heavy" what ever weight that is,,Anybody Know ?. Also added a 3/4 inch spacer's.
    Worked out real nice,,Dives a bit less,sits level and was not a big deal to do. I also found both the stock riser's a bit loose,,still snug but almost no torque.
    Turn in feels the same at various speeds so I guess I didn't change FE geometry much,,and that was my plan.
    I'm Happy,,BTW I got the service book, damn thang is three times as thick as the one for my Jeep.:rubberdown

    The Old fork oil was nasty chit,,only 2900 miles on the Roadster an Its an 08. SOooo I'm thinkin I should change out the brake fluids also,,any thoughts ??
    Last edited by Osco; 04-21-2010, 02:45 PM.

  • #2
    Great news on the successful Mods...The front forks on the sporties are "soft" at best.....
    Those manuals are so expensive because it takes a whole tree to make one....LOL !!

    Your "heavy oil" is probably a 15wt...
    U.S. Army "Retired"
    (Disabled Veteran)

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    • #3
      Fork oils are as follows:

      Harley Type E is 5 wt
      Harley Type B is 10 wt
      Screaming Eagle is 15 wt
      Screaming Eagle Heavy (racing) is 20 wt

      By adding the spacers, you increased preload, which is why there's less dive. Adding thicker oil slows compression damping, however, if it gets cold in your area, 20wt can be a little too heavy and start making a "knocking" noise in the front, on fast movement, or while going over bumps.
      **Note: The technical info I provide is suggestive. I am not a perfeshunel.

      "No two motorcycles should be the same. Your bike should be based on your creativity, and whatever's going on in your life at that time..." Jesse James


      HERD Member #10

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      • #4
        Yeah Gruss I think Croc told me to use 10 weight,,Im senile,,lol I hope 15 is not too heavy,,feels fine an like ya said the sporty forks are soft by design.

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        • #5
          Uh Oh post commin fast,,Dave !! Am I ok with 20 wt ???

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          • #6
            Ride it and see how it feels. I ran 20wt in my Dyna, pre-WG forks, ( I had 39mm Dyna/Sporty forks with wideglide triple tree conversion trees) and for me, at 245 lbs, it was too thick and the front was prone to "knocking" on bumps, or fast, sudden compressions.

            I changed to 10wt, and it's all good.

            Your weight and temps will determine that.

            The fact that you added preload, will prevent too fast of compression, because there's now MORE preload, not just thick fluid.
            **Note: The technical info I provide is suggestive. I am not a perfeshunel.

            "No two motorcycles should be the same. Your bike should be based on your creativity, and whatever's going on in your life at that time..." Jesse James


            HERD Member #10

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            • #7
              Thanks dave,,In gear and all bout 225 lbs, The test ride was fine,,and I purposly hit some bumps and hopped a speed bump a few times,,an It's HOT down here. All fork movement was fine, no "knocking" and the Dive resistance was just noticable not dramatic.
              The 3/4 inch spacer got me back to "Lower frame rails level". I'm headed to the Leesburg bike fest this weekend, thattle tell me.

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              • #8
                You'll be ok.....

                If Croc told you to use 15wt, then he'da given the same advice as me, based on your weight. Then again, Crocs old school enough to remember when there weren't 20 different fancy-schmancy fork oils, and you used ATF or hydraulic oil that you stole from work..... :)
                Last edited by Dave63; 04-21-2010, 03:25 PM.
                **Note: The technical info I provide is suggestive. I am not a perfeshunel.

                "No two motorcycles should be the same. Your bike should be based on your creativity, and whatever's going on in your life at that time..." Jesse James


                HERD Member #10

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                • #9
                  Dammit Man !!! PMSL

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                  • #10
                    ATF, yepper's, I do remember that.......or hyd. pump oil......Osco, like Dave said, if it don't bump your good bro.
                    OLD SKOOL BIKERS RULE, WE DO WHAT IT TAKES AND LIKE IT!!!
                    With age comes wisdom, yeah right!
                    FIRST "HERD BIKE OF THE MONTH CLUB MEMBER"
                    RIP Rick.....Ride On Forever In Our Hearts My Brother!

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                    • #11
                      15 wt SE in both mine....with progressive springs....

                      They go bump in the nite! :vgirl
                      Official "Herd Booze taste tester!"

                      Member #0006 :babe

                      "Lead paint chips are chewy AND sweet......" In memory of Rick.

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                      • #12
                        Originally posted by V-Girl View Post
                        15 wt SE in both mine....with progressive springs....

                        They go bump in the nite! :vgirl

                        I think YOU go bump in the night.............. :)
                        **Note: The technical info I provide is suggestive. I am not a perfeshunel.

                        "No two motorcycles should be the same. Your bike should be based on your creativity, and whatever's going on in your life at that time..." Jesse James


                        HERD Member #10

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                        • #13
                          Originally posted by Dave63 View Post
                          I think YOU go bump in the night.............. :)
                          Bump bump bump..........Bump bump bump..........Bump bump bump..........Bump bump bump..........Bump bump bump..........Bump bump bump..........Bump bump bump!!!!!!!!!!!!!!!!!!!

                          :rubberdown
                          Official "Herd Booze taste tester!"

                          Member #0006 :babe

                          "Lead paint chips are chewy AND sweet......" In memory of Rick.

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                          • #14
                            Originally posted by V-Girl View Post
                            Bump bump bump..........Bump bump bump..........Bump bump bump..........Bump bump bump..........Bump bump bump..........Bump bump bump..........Bump bump bump!!!!!!!!!!!!!!!!!!!

                            :rubberdown
                            thats a rabbit rhythm if i'm not mistaken................:):vgirl:)
                            U.S. Army "Retired"
                            (Disabled Veteran)

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                            • #15
                              if it gets cold in your area, 20wt can be a little too heavy and start making a "knocking" noise in the front, on fast movement, or while going over bumps.
                              Osco, as the more experienced members stated you should be good. I changed to SE-15 on the ElectraGlide and its fine, but it does chatter in the winter. ( sounds like something is loose )
                              HERD # 00075
                              08 Stage II 103 Ultra Classic
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