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Help for bouncy front end at 80+ speeds

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  • #1

    Help for bouncy front end at 80+ speeds

    0-79 the bike is great, anything over 80 and the front end feels like it's jumping all over the place. Removed air from the front forks and this helped a little but still quite bouncy feeling at speed. Anything to help this? Last time I did fork seals I put in heavier oil just hoping that isn't what is causing this. Also I thought I saw something about putting some stuff into the tire to help balance it, the rims have no weights on them.
    Thanks!
    80 SG
    Tags: None
  • #2
    Your front tire is not balanced. I had the same issue, until i put a new tire on.

    There are beads you can biy that go inside the tire to make it 'self balance'.
    I haven't tried them yet but others have.
    Hi, my name is George & I'm a twisty addict!

    80G (Green paint(PO idea))
    The Green Monster
    K&N A/F, TC's fuse block, '81 oil cooler, TC's homemade 4-2 w/Mac Mufflers, Raptor 660 ACCT
    Got him in '04.
    bald tire & borrowing parts

    80SG (Black w/red emblems & calipers)
    Scarlet
    K&N A/F, TC's fuse block, WJ5, Shoei bags, Raptor 660 ACCT.
    Got her in '11
    Ready for the twisties!

    81H (previously CPMaynard's)
    Hugo
    Full Venturer, Indigo Blue with B/W painted tank.
    Cold weather ride

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    • #3
      Balance

      Remove the wheel. Take it to a place that mounts and balances motorcycle tires. Should not use over 15 weight fork oil. 10 is recommended.
      1981 XS1100H Venturer
      K&N Air Filter
      ACCT
      Custom Paint by Deitz
      Geezer Rectifier/Regulator
      Chacal Stainless Steel Braided Brake Lines
      Chrome Front Rotor & Caliper Covers
      Stebel Nautilus Horn
      EBC Front Rotors
      Limie Accent Moves On In 2015

      Mike

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      • #4
        Justin,

        Before you take off the wheel, jack up the front end and spin the tire by hand.

        Look closely at the 'bead line' of the tire, it should be straight and level with the rim. If it seems to wander up and down or disappears down into the rim then the tire is not mounted correctly and it'll hop like crazy.

        .
        -- Scott
        _____
        ♬
        2004 ST1300A: No name... yet
        1982 XJ1100J: "Baby" SS Brakes, '850 FD, ACCT
        1980 XS1100G: "Columbo" SS Brakes, '850 FD, ACCT
        1979 XS1100SF: "Bush" W.I.P.
        1979 XS1100F: parts
        2018 Heritage Softail Classic 117 FLHCS SE: "Nanuk" It's DEAD, it's not just resting. It is an EX cycle.
        ♬

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        • #5
          tire spins free and bead looks solid, ill take it to get balanced soon. Wasnt sure if mag rims needed weights
          This bike is a freakin blast to ride now that its running
          Rode it like a hoonigan and got 34mpg out of the last tank
          Thanks all for your help!
          80 SG

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          • #6
            Slow down!
            Marty (in Mississippi)
            XS1100SG
            XS650SK
            XS650SH
            XS650G
            XS6502F
            XS650E

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            • #7
              Ha! Good advice Marty.

              I had a similar condition on my trip west in May. Front tire had just started to cup. Replaced it in Durango and voila! No more wavering at speed.

              John
              John is in an anonymous city with an Alamo (N29.519227,W-98.678980)

              Go ahead, click on the bikes - you know you want to...the electrons are ready.
              '81 XS1100H - "Enterprise"
              Bob Jones Custom Navy bike: Tkat brace, EBC floating rotors & SS lines, ROX pivot risers, Geezer rectifier, new 3H3 engine

              "Not all treasure is silver and gold"

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              • #8
                I try to do the speed limit, its the traffic around me that forces me to go that fast i swear officer
                80 SG

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