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Bottom bracket numpty…

  • This topic has 4 replies, 3 voices, and was last updated 8 years ago by StraelGuy.
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  • June 19, 2018 at 5:33 pm #28642
    gfcv

    I have a specialized allez, probably 10 years old. A combination of 8 speed Claris and Sora kit. The Claris cranks say octalink on them. I have been given a friends old tiagra 4700 group (a triple). So…how do I work out which bottom bracket to use on the tiagra cranks?

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  • June 19, 2018 at 7:59 pm #921977
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    StraelGuy

    I have the BBR60 on two bikes

    Sorry for the confusion, I does meant the donor Tiagra crank have a 24 mm tube bonded into it? The picture looks like it could well be Octalink.

    I have the BBR60 on two bikes and have never had a moment of bother with either of them, cheap as chips as well.

    June 19, 2018 at 7:46 pm #921975
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    huntswheelers

    4700 Tiagra has Hollowtech…

    4700 Tiagra has Hollowtech…. best BB is BBR60, it’ll never give you any bother…..

    June 19, 2018 at 7:37 pm #921973
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    gfcv

    Simple answer to that would

    Simple answer to that would be “not sure, do I?”  Hopefully the picture shows it, but looks wider than 24mm to me

    June 19, 2018 at 6:55 pm #921971
    0
    StraelGuy

    Does the chainring side crank

    Does the chainring side crank have a 24 mm diameter steel tube sticking out it? If it does, you want a Hollowtech II bottom bracket.

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