Changing an Octalink BB to a Cupped BB?

pitchshifter
pitchshifter Posts: 1,476
edited October 2010 in Workshop
Need to replace my old dura-ace cranks which are currently on an Octalink BB. Are there any compatibility issues with changing the BB to one with Cups so I can fit a new Ultegra 6700 chain set? Currently a nine speed, will the chain be sufficient?

The bike is a 2007 Lemond Reno. I assume this will be an English thread?

Any clarification would be appreciated

Comments

  • Monty Dog
    Monty Dog Posts: 20,614
    BB threads will be English - there are no compatibility issues and provided you don't increase your chainring size, chainlength should be OK, but do get chain checked for wear and replace if necessary.
    Make mine an Italian, with Campagnolo on the side..
  • pitchshifter
    pitchshifter Posts: 1,476
    Thanks

    Does a new chain mean new cassette? I heard this is the case, otherwise the gears will jump.
  • alfablue
    alfablue Posts: 8,497
    Not necessarily; if you change the chain before it is too worn out you will most likely get through 3 chains before the cassette needs changing - in any event, you can fit the chain and if it doesn't skip then all's well, if it does, then buy the cassette.
  • Monty Dog
    Monty Dog Posts: 20,614
    I agree - I work on 3-4 chains / cassette and replace chainrings when they start getting pointy, but a new chainset usually comes before that.
    Make mine an Italian, with Campagnolo on the side..

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