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  1. #1
    Senior Member
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    May 2008
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    Toronto, Canada
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    Merckx titanium with Chorus, Columbus Cyclops Campy Victory, 531 Harry Quinn 1st gen DA, SLX Fuso 8-spd DA, Airfriday. Colnago Gilco with Campy mix, Claude Pottie 753 w. 8S Record, Claude Pottie Columbus with 105, Basso with DA 7402, Masi Team 3v wit
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    deformed twisted Dura Ace 25th anniversary RH spider (FC-7700)

    I recently purchased a partial Dura Ace 25th anniv. groupset (brakes, FD, RD and crankset)

    mounting the crankset (FC-7700) however I notice a slight but noticeable wobble in the chain ring. The gap between the chain stay and the rings varies noticeably when you spin the RH crank.
    I have tried this with two sets of rings, so I suspect the spiders are somehow, slightly misaligned.

    my LBS guy confirmed this assessment and told me that he had had the same problem with a 25th anniversary crank, that it was a known (or at least common) problem, especially with heavier riders.

    anyone else ever heard of this problem?
    is there anything that can be done to realign things? or do I just toss it and replace it?

    thanks

    Peter
    Last edited by pstock; 02-24-11 at 02:50 PM.

  2. #2
    Senior Member
    Join Date
    Aug 2010
    Location
    Washington
    My Bikes
    Serotta Davis Phinney, 1992 Serotta T Max,1984 Specialized Allez, Olmo, 1974 Strawberry,Redline bmx, ect.,
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    The axle could be bent if both cranks wobble. I have with other ranks hit the spider arm that is off with a rubber mallot and have come close enough to not affect shifting. or put a punch on the inside chainring bolt to tap it back out.

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