Originally Posted by
ColinL
That is an unbelievably low BB height for a MTB. My bike is made for XC racing and it's lower than most at 12.6". Modern trail bikes are in the 13-13.5" range.
My MTB is a 2012 Cannondale Flash 29er Alloy 2. Not sure if it matters that it's a hardtail. Maybe that's a normal height for the BB of a hardtail? I don't recall any of the BBs being overly high on any of the MTBs I tried out, the Scott Scale included.
***EDIT (hours later...)***
Okay, something just crossed my mind and I really screwed the pooch on my measurements. Right now, my wife's and my MTBs are sitting on Continental "hybrid" tires, which do not have the sidewall thickness of the original MTB tires that came on the bikes.
I scoured the net for specs on my Cannondale Flash and read from one resource the BB height is 11.9" and another the BB height is 305mm. There is a discrepancy somewhere because just looking at my wife's '12 Specialized Jett, I can tell the BB height on her MTB is higher than that of mine. What perplexes me here is that on Specialized's factory site, the specs for the Jett state the BB height is 305mm.

Upon using a "mm to inches" calculator, 305mm comes out to 12 1/64 inches.

It's impossible for both, my bicycle's BB and her bicycle's BB to be 305mm when hers is clearly higher.