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Thread: GS1100 and clutch question

  1. #1
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    GS1100 and clutch question

    I have a GS1100 powered sidecar (ported heads, BS36 carbs, 1150 crank and pistons - no other power mods). The clutch slips briefly when I shift at high RPM (around 9K). I assume you guys have solved all the problems with these motors so what do I need to do? Add a lockup clutch?
    Ken: Suzuki '80 GS1100 Sidecar || Hack Nutz Racing (HackNutzR.US)

  2. #2
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    13th June 2010 - 17:47
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    EBC do a heavy duty spring set. Limp wristed road riders use 3 of the 6 springs but manly sidecar racers use all 6......

    Their fiber plate sets are very good too.

  3. #3
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    I use the premier brand heavy duty fibre & spring set in a 1229 pre 82 solo, I also put an extra steel in too. Never have any issues.

  4. #4
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    cool. This sounds like a cheap solution which I like.
    Ken: Suzuki '80 GS1100 Sidecar || Hack Nutz Racing (HackNutzR.US)

  5. #5
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    Soak the new fibres in engine oil for a few hours, & if the steels have seen a heap of slippage get new ones as they often go cone shaped from the heat.

  6. #6
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    Quote Originally Posted by sidecar bob View Post
    Soak the new fibres in engine oil for a few hours, & if the steels have seen a heap of slippage get new ones as they often go cone shaped from the heat.
    will do! I didn't replace the steel plates so that may be my problem. They "seemed" flat.
    Ken: Suzuki '80 GS1100 Sidecar || Hack Nutz Racing (HackNutzR.US)

  7. #7
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    Quote Originally Posted by Kyler View Post
    They "seemed" flat.
    If they are then we normally bead blast them in the bikes
    "If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."


    Quote Originally Posted by scracha View Post
    Even BP would shy away from cleaning up a sidecar oil spill.
    Quote Originally Posted by Warren Zevon
    Send Lawyers, guns and money, the shit has hit the fan

  8. #8
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    Was a bit of a mission to assemble a full set of steels on our chair, out of three used packs.

    Chairs are insanely hard on clutches. Be sure to warm them up on the warm up lap. Nothing aggressive, but slip it a bit to get the middle of the pack up to temp. Race starts carrying three times the weight it was designed to handle, it's no surprise they fuck out a lot.
    Polemic....look it up

  9. #9
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    [QUOTE=Drew;1130955588

    Chairs are insanely hard on clutches. Be sure to warm them up on the warm up lap. Nothing aggressive, but slip it a bit to get the middle of the pack up to temp. Race starts carrying three times the weight it was designed to handle, it's no surprise they fuck out a lot.[/QUOTE]

    They're a lot like racecar clutches of the past - when i had a drive of the odd single seater I was always told to drop it so you broke traction. Much kinder on the friction surfaces than slipping it.
    But as Ken will know, this then puts the pressure on the clutch backplate shock absorber...Which on the big jap fours of the period are a known weakness.
    At least with the GS/GSX1100, heavy duty clutch baskets with much stronger backplates are available if he has to go that way.

  10. #10
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    Quote Originally Posted by Kickaha View Post
    If they are then we normally bead blast them in the bikes
    I hope you meant "out of the bike".......

  11. #11
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    Quote Originally Posted by Grumph View Post
    I hope you meant "out of the bike".......
    No, that fuckin idiot would do them in the bike.

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