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  1. #1
    Randomhead
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    Aug 2008
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    chainring clearance on bamboo

    anyone have any pictures of a solution to the problem of dimpling a piece of bamboo?

  2. #2
    Senior Member
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    Internally reinforce the chainstay with a piece of dowel, notch it in the desired area and then lay glass and/or carbon cloth over the filed out area and wrap the lug.
    I usually lay a strip of glass cloth from the downtube across the bb and onto the notched chainstay and then a strip of woven carbon tape and a strip of unidirectional carbon.
    Three layers plus the tow wrapping more than compensates for the filed out area.
    You will have to get a good idea for how much thickness of material you are accumulating to make sure you still have the clearance needed.
    The other choice is to select a piece of bamboo with a natural kink/curve in the right spot.

  3. #3
    Randomhead
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    Thanks, that's what I was thinking. There is a bamboo bike at work where it clears just fine even though the chainstays aren't particularly long

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