This might be an incredibly stupid question, but I'm struggling to find the answer anywhere. I've been offered a pair of 26x1.75 wheels for a very good price, and was wondering if these would fit well in the place of my old 1 3/8 wheels? The diameter won't be an issue, nor will brake reach (they've got drum brakes) but I can't work out what effect the change will have on the pedal clearance. Are 1.75 wheels singificantly larger/smaller in diameter? Thanks!