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Thread: Excessive fork dive - Showa

  1. #1
    Baby Twin
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    Excessive fork dive - Showa

    I just picked up a really clean 2000 Mille. I was trying to get it dialed in for some trackdays and I'm getting a ton of dive under braking. Spring preload and compression isn't helping much.
    I'll guess the fork oil has never been checked and the level is probably low. I weigh about 210 - am I going to need new springs? Anyone have experience with increasing the oil level above the recommended setting?
    Thanks!
    Last edited by jlburgess; February 15th, 2010 at 05:39 PM. Reason: typo

  2. #2
    Sensei
    Guest
    Quote Originally Posted by jlburgess View Post
    I just picked up a really clean 2000 Mille. I was trying to get it dialed in for some trackdays and I'm getting a ton of dive under braking. Spring preload and compression isn't helping much.
    I'll guess the fork oil has never been checked and the level is probably low. I weigh about 210 - am I going to need new springs? Anyone have experience with increasing the oil level above the recommended setting?
    Thanks!
    Sounds like you'll need to re-spring from what you are saying . Unless the forks are leaking then the oil shouldn't be low more like it has lost it viscosity if so then a good time to check your spring rate while apart & give them a good check over & put back together with some Ohlins fork oil

  3. #3
    Dolenc
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    As far as I know stock spring in showas is preaty stiff I think ist 1.0kg that suits a rider around your weight.

    So I would say oil problems, if compression isnt doing much than its defenetly it. Its not only the oil level, when it gets old it looses some of its propretis. And it effects the bike a lot.

  4. #4
    Badger
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    Quote Originally Posted by Dolenc View Post
    As far as I know stock spring in showas is preaty stiff I think ist 1.0kg that suits a rider around your weight.

    So I would say oil problems, if compression isnt doing much than its defenetly it. Its not only the oil level, when it gets old it looses some of its propretis. And it effects the bike a lot.

    Dolenc is correct, the oil level is what you adjust to give you the correct amount of unused fork travel below your zip tie, the deterioration of the oil is more than likely the problem

  5. #5
    kevcole
    Guest
    spring will be fine dude

    sounds like they just need a service, then a few tweaks to the oil height once your up and running again

    Kev

  6. #6
    Baby Twin btkwaka's Avatar
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    I had exactly the same problem and was told by an expert that I needed a re-valve which turned out to be bullshit, he just wanted the money ! I got the oil changed and replaced with 10w instead of 5w and increased the amount of oil in the forks by 5cc and they are absolutely brilliant, I only use mine for trackdays and am about the same weight as you. I now have plenty of adjustment left and was able to back off the spring pre-load and control the forks using the damping which is the proper way to do it. Dont waste good cash until you have tried this first.

  7. #7
    A303
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    Quote Originally Posted by btkwaka View Post
    I had exactly the same problem and was told by an expert that I needed a re-valve which turned out to be bullshit, he just wanted the money ! I got the oil changed and replaced with 10w instead of 5w and increased the amount of oil in the forks by 5cc and they are absolutely brilliant, I only use mine for trackdays and am about the same weight as you. I now have plenty of adjustment left and was able to back off the spring pre-load and control the forks using the damping which is the proper way to do it. Dont waste good cash until you have tried this first.
    Agreed - my Showas are brilliant on track so yours probably just need a service. Think Griff put 5w in mine. Best front end I've ever owned.

  8. #8
    carbon kid
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    yeah, sort the oil, which is probably old, I only changed my oil and springs at 58k miles as it was diving/wallowing a bit at that time.
    Ck

  9. #9
    Baby Twin
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    Good info - thanks for the help!

  10. #10
    Evil Twin Alan Haskins's Avatar
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    Get in touch with Fusebox/Griff, he'll service your forks...and make them look like Ohlins, too!

  11. #11
    Baby Twin btkwaka's Avatar
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    Mr Haskins I think you will find Oregan is a long way from Tamworth where Griff is based, and I dont think his road trips go quite that far, lol lol lol

  12. #12
    Evil Twin Alan Haskins's Avatar
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    They don't do mail in Oregon..?

  13. #13
    Baby Twin btkwaka's Avatar
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    Yeah good point, but it only cost me 25 to get em done and the mail cost would be more than that.

  14. #14
    Superbike Twin knightster's Avatar
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    u never know, give him a call, he may fancy a holiday but i think he'll need more work than just servicing a set of forks
    Last edited by knightster; February 16th, 2010 at 08:50 AM.

  15. #15
    Evil Twin Alan Haskins's Avatar
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    Where's your spirit of adventure? The world's a small place, international travel's a doddle, DHL can get it there yesterday...

    Assuming they don't dent it, lose it, or mistake it for a supergun

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