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bb 86

mrman mrmanmrman mrman Posts: 23
edited December 2011 in Workshop
Hello,

Just a quick question, if I have this http://www.chainreactioncycles.com/Mode ... elID=44226 fitted in my frame will this http://www.chainreactioncycles.com/Mode ... elID=39018 fit? As I understand it, bb86 gives the same width as standard threaded bb cups just that they are internal rather than external, is this correct?

Thanks a lot.

Posts

  • Monty DogMonty Dog Posts: 20,614
    Yes, BB86 is designed for standard 24mm-axle, external bearing chainsets so provided you have the matching BB and chainset, you shouldn't have a problem.
    Make mine an Italian, with Campagnolo on the side..
  • rjsmithrjsmith Posts: 1,924
    Monty - do you know if the same is true with bb90? Specifically will a FSA chainset fit a bb90 frame that currently has a shimano chainset in without any change of adpaters etc?
  • Monty DogMonty Dog Posts: 20,614
    BB90 and BB86 are pretty similar and are often just different manufacturers designations - BB86 refers to the frame shell width whereas BB90 is the width of the BB withe the bearings installed. FWIW Trek's BB90 is different to Giants. If you're running a standard Hollowtech 2 chainset then there's no reason why you couldn't fit some models of FSA Megaexo chainsets - usually the alloy ones like Gossamer. Most FSA carbon chainets take a narrower bearing and are not interchangeable with Hollowtech. Worth checking before you buy. Just bought three custom ti frames from China so genned up on this stuff.
    Make mine an Italian, with Campagnolo on the side..
  • rjsmithrjsmith Posts: 1,924
    Thanks for the info.This is a Trek bb90 frame I was thinking of buying.
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