- Stiff RF cranks
Just checking that I am not going mad here.
I have some RF atlas cranks, and a new Acros BB, and when I do the cranks up tight enough that the bolt bottoms out on the axle (well to be honest I haven’t done it up this tight yet) the crank gets very very stiff and hard to rotate
To fix this do I need to remove some of the spacers on the axle? or am I doing something wrong?Posted 8 years agojamie@balfaMember
Acros BB’s use an angular contact bearing. If you keep winding & winding you will crush the inner bearing race into the balls thus stopping it turning.
The bolt is not supposed to do up against the axle.
Tighten the steel 8mm allen key bolt up tight so the cranks can still turn freely, then screw up against it the 12mm Aluminium allen key cap to lock it all down.
JPosted 8 years ago
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