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@hugo7
What length BB do I need?
I have a square taper shimano decore triple crankset (M510) and need to buy a threadless BB.
Sheldon says, 110-113mm which will give a 47.5-50mm chainline.
http://sheldonbrown.com/bbsize.html
It says 47.5 preferred. It's a skinny 531 tubed frame. But I'm not sure what differences it'll make.
How do I work out what chainline I need on a triple with a 9-speed rear?
Also any recommendations on which BB brand? It seems like it's velo orange or yst, or Spa's unknown one... any differences?
Cheers.