This isnt a DH specific question, but I was wrenchin in the garage and im scratching my head.
I have a BB mount Lopes guide on a Tracer, with Stylo cranks and a Chromag CR. I dont think the parts or the frame matter. Its an External BB.
Heres the issue, my top guide rubs a bit with the chain and I thought, hey if I can bring that chainring out a mm id be golden. So I put a 1mm BB spacer, between the BB and the BB mount boomerang which gave me the correct spacing. When I instal the cranks and torque it down the cranks wont turn at all. Without the spacer its fine.
Why is this?
I have a BB mount Lopes guide on a Tracer, with Stylo cranks and a Chromag CR. I dont think the parts or the frame matter. Its an External BB.
Heres the issue, my top guide rubs a bit with the chain and I thought, hey if I can bring that chainring out a mm id be golden. So I put a 1mm BB spacer, between the BB and the BB mount boomerang which gave me the correct spacing. When I instal the cranks and torque it down the cranks wont turn at all. Without the spacer its fine.
Why is this?