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  1. #1
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    Cracked bolt hole in crankset - is there a cure?

    My XT crankset is cracked in one of the four bolt holes.

    Is there a way to fix this?

    I have understood that there is a zink method for diy soldering/welding on aluminium?


    Cracked bolt hole in crankset - is there a cure?-vevarm.jpg
    2011 Stumpjumper FSR Elite, 650b conversion
    1996 Stumpjumper M2, 26"
    2013 Cube Limited Race, 29"
    2014 Cube Peloton Road Bike

  2. #2
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    The only fix I can think of is eBay


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  3. #3
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    Elaborate please
    2011 Stumpjumper FSR Elite, 650b conversion
    1996 Stumpjumper M2, 26"
    2013 Cube Limited Race, 29"
    2014 Cube Peloton Road Bike

  4. #4
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    I was being a smart ass. There’s no cost effective solution to this. Better off buying a replacement. I bet you could find one on eBay (lovingly used) for not much.

    Alternatively, you could do nothing if the other 4 bolt holes are OK. That kind of damage is probably from an impact. In which case, it might make sense to not use it. Cracks like to grow.


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  5. #5
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    Quote Originally Posted by yogidave View Post
    I was being a smart ass. There’s no cost effective solution to this. Better off buying a replacement. I bet you could find one on eBay (lovingly used) for not much.

    Alternatively, you could do nothing if the other 4 bolt holes are OK. That kind of damage is probably from an impact. In which case, it might make sense to not use it. Cracks like to grow.


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    What about this technique? As I understand it, any solid 100% zink material can be used, not only these brazing rods:
    https://www.youtube.com/watch?v=3SBfP4_i1Go

    2011 Stumpjumper FSR Elite, 650b conversion
    1996 Stumpjumper M2, 26"
    2013 Cube Limited Race, 29"
    2014 Cube Peloton Road Bike

  6. #6
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    You could look for a welder in you area


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  7. #7
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    thanx but I am looking for super cheap fix on this one. Have som zinc bits laying around the shed that I will experiment with.
    2011 Stumpjumper FSR Elite, 650b conversion
    1996 Stumpjumper M2, 26"
    2013 Cube Limited Race, 29"
    2014 Cube Peloton Road Bike

  8. #8
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    Worth a try but aluminum quickly develops an oxidized layer at the surface when exposed to air. To properly repair you would need to grind out the repair area immediately before brazing/welding. Will never be structurally as strong...band-aid at best. You still have 3 of 4 bolts for chain-ring...depending on how hard you pound it you may be fine as is (for awhile).
    12 Santa Cruz Heckler
    18 Kona Process 153 AL/DL (27.5)...

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