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Thread: Straightening bicycle sprockets - GIF

  1. #1
    Jon
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    Straightening bicycle sprockets - GIF

    Straightening bicycle sprockets.




    Previously:

    Shaft-driven bicycle - video and photo
    Railroad track bicycle - photo
    Unusual custom bicycle GIF
    Functioning wooden bicycle - GIF

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  2. The Following 8 Users Say Thank You to Jon For This Useful Post:

    Beserkleyboy (Nov 22, 2018), jimfols (Nov 18, 2018), Lee Bell (Dec 24, 2018), Moby Duck (Nov 17, 2018), PJs (Nov 18, 2018), Priemsy (Nov 17, 2018), Seedtick (Nov 17, 2018), suther51 (Nov 17, 2018)

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    Supporting Member Radioman's Avatar
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    Radioman's Tools
    I wonder what the tolerance is that’s she’s setting those to? Is .005 inches ok? Or is it as close as .001?

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    Lee Bell (Dec 24, 2018), PJs (Nov 18, 2018)

  5. #3
    Supporting Member Beserkleyboy's Avatar
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    They are only cheap swaged steel cranks. +- .25mm maybe? Probably used on cheap fixed gear/coaster brake bikes, so accuracy not important. Many moons ago in my bicycle life, working in a Schwinn shop in Walnut Creek, Calif, we had a "Schwinn hammer", a very large ball peen hammer, and used it to straighten the Ashtabula cranks and forks....precision engineering...
    Jim



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