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  1. #1
    34x25 FTW! oboeguy's Avatar
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    Sep 2004
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    NYC
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    Scott CR1 '07, Dahon SpeedPro '06
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    I've had the Speed Pro for nearly three weeks. On the commute home yesterday, I felt something loose through my right leg. I looked down, and what do I see but a wobbly chainring!! I tightened it at home (I found a large hex wrench of the right size, somehow) but then it came loose again on the commute this morning. What's up with that? Did the LBS do a lousy job building-up the bike? Did I not re-tighten it enough? (I knew I should have brought the wrench with me to work!)

    Edit: I should add that the wobble was due to the crank bolt (?) being loose.
    Last edited by oboeguy; 06-30-05 at 06:11 AM.
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  2. #2
    Just riding andygates's Avatar
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    Oct 2004
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    Exeter, UK
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    Cannondale Bad Boy / Mercian track / BOB trailer / Moulton recumbent project
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    The crank bolt should not normally work loose: the LBS missed it. Problem is, once it has come loose once, the steel bottom-bracket axle chews up the soft alloy crank, and it hardly ever fits right ever again. That's probably why it came loose a second time.

    You do need to do 'em up mongo-tight. But your current situation is a warranty job for the shop.

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