Fork springs... Which way up?

Discussion in 'UK Motorcycles' started by Dynamic, Feb 18, 2005.

  1. Dynamic

    Dynamic Guest

    I haven't ridden the FZR yet. There was a leak on one of the forks, so I've
    been changing the seals this morning. My manual hasn't come through yet, so
    I'm using my Dad's manual, and bits of info of t'internet.

    Manual says the tighter winded side of the spring goes at the top of the
    fork. Open up the first fork, and that's the way it came out... Did the
    dirty work, and put it back on.

    Second fork, the spring drops out... opposite way up :-/

    Which is right, and how would this affect the handling either way?

    Surely whoever did it last would have noticed a difference in handling?

    Also, I've managed to chew up one of the bolts on the top of the fork leg.
    Any ideas where I could get a couple of aftermarket? I was thinking of
    nipping down J&S in a bit, but I couldn't find anything in the demon tweaks
    catalogue, or the M&P website, so it's looking unlikely.
    --
     
    Dynamic, Feb 18, 2005
    #1
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  2. Dynamic

    Muck Guest

    I've always put them in with the tight wound bit at the top. Like it
    shows me in the HBoL.
    Dunno.. I think not though.
    If they're after market ones, just make sure that they are both the same
    height, or one fork leg will have more preload then the other one.

    I scored a set of forks with yokes for my FZR for £20 off ebay, arrived
    this morning they did. :)
     
    Muck, Feb 18, 2005
    #2
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  3. Dynamic

    Mo Childs Guest

    Which is right, and how would this affect the handling either way?

    The tight coils weigh more per inch than the loose. Putting them at the top
    would very slightly reduce the unsprung weight, I doubt you could tell in
    practice. But I'd certainly want them both the same way up.
     
    Mo Childs, Feb 18, 2005
    #3
  4. Dynamic

    OH- Guest

    The only coils that effect oil level are the ones that dive into
    the oil when the forks are compressed. Coils already submerged
    does not change volume no matter how you deform them.
    This seems to suggest that there is a chance that tightly wound
    springs on top could, possibly but not likely, increase air
    compression more than the opposite.
     
    OH-, Feb 18, 2005
    #4
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