How do the 650's ride on your SJ compared to your 26er's? How much clearance to you have between your chain-stay bridge (located behind the BB) and the 650 tire? What is the OD of your 650 tires and the 26er tires you took off the bike? I was kicking around this idea of building up some 650 wheels and installing them on my 2009 Epic, but I read on the 650 forum that a 650 tire will rub on the back of the Epic's ST when you hit a bit bump. Is your CG (center of gravity) on your SJ too high or is 3/4" of lift too hard to perceive when you are riding?
Its snug but ok at the seat stay cross member, the chain stay cross member has plenty of room. I am waiting on a disc rotor for the rear to ride it, hopefully by the end of the week. The BB height is not noticeable at least to me. Way better than any 29er.
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