Rotor 3D track bottom bracket compatibility

Posted on Thu 29th, November 2018

• #1

Pomidor

Hi
I don't know if this is the right place to ask this but anyway - I'm thinking about buying Rotor 3d track cranks and I'm curious if I can use non-rotor bb to run with it? Cranks have 24mm spindle after all so it should be able to work with Shimano bb's or others but since rotor obviously says that it can ONLY run with rotor bb I'm not so sure. Did any of you try to mismatch this crank with some other bb? Is it possible or not?

Best regards
• #2

jono84 in reply to @Pomidor

Ever find out? Wandering the same thing.
• #3

aniki in reply to @Pomidor

Can't find anything to back it up but I'm sure I read that Rotor road cranks and BBs are compatible with Shimano but the track crank and BB is not. I believe that instead of making the crank spider different to achieve the correct chain-line, they just used a shorter spindle and narrower BB shells (annoyingly)
Sugino on the other hand blatantly copied shimano hollowtech II for the DD2 crank and as such the BBs are interchangeable. As are the NDS crank arms (should you want to use a power meter)
This is (mainly) what pushed me to replace my 7710 for DD2.
• #4

spinnnout

Suspect you need the matching rotor track bb, you certainly do with the more recent Aldhu/Vegast track cranks.

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