Gear Clash on 2002 Honda Shadow Spirit

Discussion in 'Motorbike Technical Discussion' started by Dave HD, Mar 7, 2005.

  1. Dave HD

    Dave HD Guest

    I have been experiencing some gear clash when upshifting my '02 Shadow
    Spirit. How can I fix it? Am I looking at taking it to the $$hop or is it
    just a matter of adjustment??? I don't know if this tranny is syncro or

    Dave HD, Mar 7, 2005
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  2. the $$hop or is it just a matter of adjustment??? I don't know > if
    this tranny is syncro or not.

    Motorcycle transmissions don't have synchromesh, they are what is
    called a "crash box". You can't get "gear clash" out of a motorcycle
    transmission, because the gears are always in mesh. All of them, all
    the time. That's why the specifications say that it is a "constant
    mesh" transmission...

    But, I don't doubt that you are hearing a noise when you shift. It's
    the engagement *dogs* on the sides of the gears that actually engage
    the gears. About half the gears in the box are pinion gears, they are
    splined, or pressed, or are a physical part of the shaft they are on...

    The other half of the gears are "wheel" or "freewheeling" gears, they
    spin on the shafts they are on and they get pushed sideways by the
    shifter forks in order to engage those dogs into slots on the adjacent

    Now, maybe your shifter forkers are bent, or the monkey motion linkage
    that goes from your shifter pedal to turn the shifter drum that moves
    the shifter forks is out of adjustment...

    You might look at the drawings at to see what I mean
    when I talk about shifter drum and shifter forks, etc. Follow out what
    the shifter shaft does when it goes to the ratcheting mechanism on the
    end of the shifter drum. That would probably be underneath the clutch
    side cover, and, if there's any adjustment possible(other than taking
    all the slop out of the external linkage or adjusting the angle of the
    shifter pedal), it would be under the clutch cover...

    There's one other thing: if this "gear clash" you're hearing mainly
    happens when you're shifting up from first, through neutral, into
    second gear, the problem might be that you need to train your hind foot
    into moving the shifter pedal farther on the first to second shift. You
    have to move the pedal twice as far as when you're shifting from second
    to third...

    That's why riders miss the first to second gear shift so often...
    krusty kritter, Mar 7, 2005
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  3. Dave HD

    Dave HD Guest

    Thanks. It does happen on the 1-2 upshift. But this has started after a
    few miles of riding. Not there when new. I don't think it's the technique,
    but I will investigate that further (if winter weather permits).

    Dave HD, Mar 7, 2005
  4. Dave HD

    OH- Guest

    More often than not, gear change problems are related to
    clutch adjustment. Play around with that and see if the
    situation improves. Please note that both too much slack
    AND too little slack can give shifting problems. Do not
    trust the adjustment instruction in the owners manual,
    you have to find the best adjustment yourself. Just be
    sure to have some slack, or you can burn the clutch
    OH-, Mar 7, 2005
  5. Dave HD

    chazimanolis Guest

    chazimanolis, Mar 12, 2005
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