Bottom bracket axle length

development_cycle · Aug 22, 2018

I'm probably being a roadie noob, but I have a set of RSX triple cranks A-410 I think, and need to replace the BB in the steel frame I'm fitting them too, it's a 68mm shell, and I happen to have a decent BB already but it's 110mm long, will that be ok?

mdvineng · Aug 22, 2018

I believe 110 is for a double and 118 for triple. Though mounting the bb and slipping on the crank to check the inner ring clearance may give you a success with the 110.

development_cycle · Aug 22, 2018

I was hoping that with the 68mm she’ll and skinny steel seat tube I might get away with it

mdvineng · Aug 22, 2018

You may be lucky, I have managed some shorter axles than recommended in the past. Proof of the pudding means fitting it to see.

development_cycle · Aug 22, 2018

Yeah I’ll probably just bung it on

bagpuss · Aug 22, 2018

Re:

Have you seen this chart
https://www.sheldonbrown.com/bbsize.html

development_cycle · Aug 22, 2018

Thanks will check tomorrow, chart doesn’t load properly on phone

Bottom bracket axle length

development_cycle

mdvineng

Senior Retro Guru

development_cycle

mdvineng

Senior Retro Guru

development_cycle

bagpuss

development_cycle

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