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  • Cranksets to go 2x on Giant CX bike

     Robmet updated 2 years, 11 months ago 3 Members · 7 Posts
  • martini henrie

    Member
    14 April 2017 at 6:24 pm

    Hi chaps,

    I’m looking for advice on getting a 2x crankset to fit on a FSA MegaExo Integrated BB fitted to a 2011 Giant TCX3 CX bike.

    I’m in the process of upgrading the drivetrain to a mix of 105/Ultegra 10 speed, and have found that the chainrings I have aquired are not compatible with the cranks already on the bike (a major oversight). Or is there a BB I can swap to that won’t cost the earth (budget is very tight) that will allow me to use reasonably priced cranks 🙄 😆

    Suggestions of what to look for on the likes of ebay etc will be gratefully received. I’ve also posted a want ad in the for sale section just in case anyone has something hiding in a box somewhere 😆

    Thanks in advance 8)

  • Gunner

    Member
    14 April 2017 at 6:59 pm

    I may be wrong but wouldn’t you need a BB with a shorter spindle length as you are going from a triple chainset to a double…… ❓

  • martini henrie

    Member
    14 April 2017 at 7:06 pm

    I may be wrong but wouldn’t you need a BB with a shorter spindle length as you are going from a triple chainset to a double…… ❓

    I don’t know, I’m new to messing around with road style bikes having left my CX stock for 6 years. I will admit to being slightly foxed by having to learn the different parts sets and to what they are compatible, I found the MTB bits much easier to navigate (that and I’m getting old 😆 ).

  • Gunner

    Member
    14 April 2017 at 7:12 pm

    Presuming that your CX is fitted with a triple chainset at the moment I’m sure you’d need a replacement bottom bracket with a shorter spindle length to bring the rings of your new double chainset closer to the frame for efficient shifting, plus you’d need a new front mech as well.

    A new BB should be about £25 to £30 I would have thought.

  • martini henrie

    Member
    15 April 2017 at 7:30 am

    Cheers, I’ll have a look into it 8)

  • Robmet

    Member
    12 July 2017 at 2:40 pm

    If your frame is a screw in type BB which from 2011 it probably will be, it might just be easier to keep an eye in the sales for a shimano HT2 type chainset which will come with a external BB in the box.

    https://www.merlincycles.com/shimano-tiagra-4700-chainset-10-speed-92832.html

  • Robmet

    Member
    12 July 2017 at 2:42 pm

    https://www.merlincycles.com/campagnolo-cx-alloy-chainset-97381.html

    Scratch that, this campy one is lovely and a massive bargain.

    But I have no idea what BB it takes….. 😆

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