Mechanics and Fixing Any Questions Answered

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svenhöek

Square taper BB question:
Is the shoulder on a typical cartridge unit necessary? or is it just for easy installation without measuring anything? Would the BB still work if I remove the shoulder/found another cup without one?

A bit like the Phil wood version, no shoulder either side:

I want to move the driveside crank in a bit....

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M_V in reply to @svenhöek

Is the shoulder on a typical cartridge unit necessary?

IMO, yes.

I’ve never used a Phil bb so don’t know how well they work but at work (velodrome) I get kept fairly busy fixing bikes with the Miche bb that has no lips/shoulders. They tend to loosen off and move themselves to one side or the other.

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svenhöek in reply to @M_V

Thanks, Real world knowledge!

I think I will try with a lockring on the non-driveside cup then and see if it holds.

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