Repairing a Warped Rim?

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by Rockwell, Apr 26, 2013.

  1. Rockwell

    Rockwell Been here awhile

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    Nov 11, 2008
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    670
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    I was wondering about applying heat. If I took a blowtorch to it, I should be able to tap it back into a bit better shape?
    #21
  2. keener

    keener Speed changes you.

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    If its not bent too much I say stay away from blow torch. Just put a towvel on the area and hammer it back into shape.
    #22
  3. Sporting Wood

    Sporting Wood I

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    Oct 18, 2011
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    I've positioned an acetylene rich torch ( no O2) on the affected area and let it heat until carbon deposited on the rim from the acetylene begins to burn and peel off. Then with the rim braced, beat it back carefully with brass hammers and wood. I clamp rims to the frame of my hydraulic press for this sort of thing.

    That said, this will totally ruin the metals temper and it'll be softer for the next bump.
    #23
  4. licascurtu

    licascurtu Been here awhile

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    You wanna be careful with that. I say you don't need a torque wrench u just need to know what your doing.The higher the sound the more tension in your rims. If your wheel is straight and you do have some low sound spokes you need to count the turns you apply to the spoke you're adding tension and do the same for the rest of them. I have a friend how read about adjusting the tension on the wheels and failed miserably so my advice is do nothing if you don't really understand how it works. Let me know if you need more help on that.
    #24
  5. Camion

    Camion Adventurer

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    Sometimes I get damages like really "open" rim. I put the rim (without tyre) on the large and flat block of wood (as railway sleepers). I put on top of rim the flat hard piece of wood and use a big hammer. After the repair you will not find some crooked sectors of rim.
    P.S. Of course, sometimes it is necessary to check the rim for cracks.
    #25
  6. licascurtu

    licascurtu Been here awhile

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    Whatever you do don't spend money on fixing a stock rim, put that money towards a new Excel rim. The stock are way to soft. I run a one size narrower front 1.85 Excel not the stock 2.15 and you don't sacrifice on road performance but definitely improve the off road performance and the life of the rim. Same goes for the rear.
    #26
  7. uk_mouse

    uk_mouse Aquatic adventurer

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    I straightened my front rim using a hydraulic press, obviously to do this you need to take the wheel off the bike. But the poster above is right - save up for an excel :) I've now got 1.85 front and 2.5 rear, a definite improvement off road.
    #27
  8. keener

    keener Speed changes you.

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    Yes get an Excel lol
    http://www.advrider.com/forums/showthread.php?t=811952

    If that was the stock rim, i wouldn't been able to ride back home. That rim is also superlaced by Woodys works. I made the mistake of not getting the 1.85 or 1.6

    I hammered it back in,... very very tough rim
    #28