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  1. #1
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    Drilling holes in a frame

    Hi, lately I've been looking into converting my single speed dirt jumper into an 8 speed dirt jumper, and when i was looking at the frame I noticed there was no 5mm hole for the derailleur to be installed. So I was wondering if drilling a 5mm hole into the frame(so I can install the derailleur) would be a good idea. And if not, what would be the best way to attach the derailleur.

    Thanks for your time,

  2. #2
    Member
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    Rear derailleurs are not held on with 5mm bolts. Rear derailleur hangers are threaded M10x1- but you still need a hanger.

    Depending on your drop outs you may be able to use something like one of these:




    Knowing what frame you have would make it easier- but in either case this is most likely not a permanent frame building fix so much as a mechanical addition.
    --
    Eric Estlund
    Winter Bicycles

  3. #3
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    The frame is from a KHS SJ-100. If that helps...

  4. #4
    Senior Member
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    Quote Originally Posted by xXSEYCOMXx View Post
    The frame is from a KHS SJ-100. If that helps...
    What year? Looking at the website, the 2008 clearly shows a derailleur hanger. The 2011 may not. The frame color is throwing me off.

  5. #5
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    I believe it's a 2008. It is a white frame(if that helps). But there's nowhere to hang a derailleur. I think I might go with what Eric Estlund suggested. What are those pieces called(the ones in the pictures above)?

  6. #6
    Cisalpinist Italuminium's Avatar
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    derailler hangers or derailler claws.
    Pass the Dutchie on the non-drive side.
    Rather a 100$ bike with 1000$ wheels than a 1000$ bike with 100$ wheels.

  7. #7
    Decrepit Member Scooper's Avatar
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    - Stan

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