I just finished installing new M970 cranks on my 2008 Stumpy FSR Expert. I installed the cranks with one right side spacer and everything tied in well. (I measured the bottom bracket at 73 mm and there was only one spacer on the M762 cranks that came on the bike - if you think the spacers were wrong please tell me as prior to today I thought the bike had a 68 mm bottom bracket).
Main question is - the Q factor of the cranks set up this way appears alot (~5 mm) smaller. There is clearance for the chain rings from the chain stay, but just. A chain link could not slide through. Does this sound right? Are there any problems with this that I need to worry about? Anyone else have an XTR crank on a 2008-2009 stumpy who can comment?
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Thread: XTR Crankset questions