After measuring an FSA BB30 crankset installation with a self constructed measuring jig and laser measuring device (not really) it seems that the LH pedal sits approximately 2mm further outboard than the RH pedal.
Do crankset manufacturers account for the extra ~2mm that the wave washer adds on the NDS in their designs? Or do they think that it doesn't matter if one pedal sits further outboard than the other?
Thanks.
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Moderator: robbosmans
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I think the consensus among the WW community is that kind of asymmetry is not all that significant. I do recall that in addition to the wave spring washer, the FSA BB30 bottom brackets should be supplied with two or three ~2mm thick spacers but you could also use the 1mm plastic spacers from a Cannondale BB30 kit.
- Michael
"People should stop expecting normal from me... seriously, we all know it's never going to happen"
"People should stop expecting normal from me... seriously, we all know it's never going to happen"
You can view the BB30 standards drawings here. The issue you are asking about is not directly addressed by the spec because the chain line and clearance to the chain stays is influenced by some other geometry in frame design but this is a good reference.
http://www.bb30standard.com/wp-content/uploads//2012/04/bb30standard_new.pdf
http://www.bb30standard.com/wp-content/uploads//2012/04/bb30standard_new.pdf