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  1. #1
    Crank monkey
    Reputation: Smytty's Avatar
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    Jan 2004
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    New question here. XPost from Fisher - Sugar swingarm/crank interference

    Hey - I just installed a new set of XT cranks on my 02 Sugar+, and noticed that the swingarm hits the external bearing thingy (see picture.) It looks like it might only interact for the last 1/8" of the travel or so, so I don't expect any problems other than a clunk when it tops out.

    I am a bit concerned about a couple of things, though. Will this eventually mess up my swingarm, or will it mess up the bearing after a while?

    Anyone else have a problem with this? Any solutions other than only using the 2.8" travel setting?

    Any help would be good. Thanks.
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    Cheers,
    Smytty

  2. #2
    Ride Responsibly
    Reputation: LWright's Avatar
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    Jan 2006
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    You might be able to remove some material from the swingarm without sacrificing strength. looks like the contact would happen only when you get air (no weight on rear wheel), with any compression at all there should be no contact, still I would not want my swingarm to hit the brg shell. I would mark the difference between the swingarm posistion with and without the BB instaled. if a few thousands filed off will do the trick, go for it, (might also be able to remove a few thousands from the brg housing) if much more than that I would find another BB/crank.

  3. #3
    Vaginatarian
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    Oct 2005
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    the design of that bike pre dates external BBs, I would get an internal BB

  4. #4
    mtbr member
    Reputation: cort's Avatar
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    Mar 2004
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    [QUOTE=LWright]You might be able to remove some material from the swingarm without sacrificing strength.


    Ouch! You can say goodbye to your lifetime warranty if you do this.
    I would be inclined to go back to an internal bb system to fix this problem

  5. #5
    Crank monkey
    Reputation: Smytty's Avatar
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    Jan 2004
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    Well, here is Fisher's Official opinion:

    We have seen this on the older swing. We do have swings in stock with a
    relief cut out that will clear this. It shouldn't cause much of an issue,
    but I would keep an eye on it.

    Josh Vick | Trek Bicycle Corporation | Gary Fisher/Trek/Bontrager | Trek
    Technical Support | josh_vick@trekbikes.com



    Of course, I still have a few questions...
    Cheers,
    Smytty

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