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  1. #1
    Senior Member bfromcolo's Avatar
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    Help with ancient bottom bracket

    I am trying to change out the one piece crank for a three piece one on an old Schwinn. How do I extract the original bearing cups from the bottom bracket? I have been beating on it but not getting anywhere. Thanks.
    ?? Tommasini Super Prestige
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    Mr. Dopolina Bob Dopolina's Avatar
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    Picture?

  3. #3
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    Hit the inside of the cups from the opposite side of the frame with something. Frame has to be stationary somehow.

    I did this recently on a Schwinn "spin" bike and used a 2 lbs pry bar and hit it with a 3 lbs dead weight hammer. The cups flew across the room but they came out.

    Wear gloves - the hand holding the pry bar was numb for a bit from the shock.

    Good luck,
    cdr

  4. #4
    Senior Member bfromcolo's Avatar
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    Quote Originally Posted by carpediemracing View Post
    Hit the inside of the cups from the opposite side of the frame with something. Frame has to be stationary somehow.

    I did this recently on a Schwinn "spin" bike and used a 2 lbs pry bar and hit it with a 3 lbs dead weight hammer. The cups flew across the room but they came out.

    Wear gloves - the hand holding the pry bar was numb for a bit from the shock.

    Good luck,
    cdr
    Yes that did it. BIG socket on an extension and some beating with a rubber mallet from the other end eventually did it. I have a bike stand I got at a yard sale for $5 and it sliped a couple times but perseverance paid off in the end.
    ?? Tommasini Super Prestige
    03 Jamis Dragon
    06 Bianchi Axis
    10 Nashbar Touring Nexus 7 commuter

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