Hi all, I'm in the process of designing a frame which requires a particularly wide crankset. First off; by Q-Factor I mean the distance between the inside faces of the cranks. Some places seem to measure to the outside faces which is entirely useless as it doesn't tell you stance width (how far apart your feet are) or the clearance the cranks give from the stays.
Anyway, the current batch of X9/7/5 are listed on their technical doc as being 171mm which seems rather large, when Shimano are about 150mm. If this Q-Factor is correct, I'm very very happy, and will be speccing Sram cranks on the design. But I get a funny feeling they're measuring to the outside face which will make them narrower than Shimano.
So - any measurements would be greatly appreciated!
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