thanks for your help zippy and keith, I'm pretty sure the problem is not with the brake cable. I got the wheel off, and tried to remove the sort of oval shaped nut on the sprocket side (its like a cicrular piece with the sides cut off to accept a wrench) and it wont come off! I put a crescent wrench on there, nothing, so I extended it with a piece of pipe and all i succeded in doing is stripping some of the metal off of the corner of the nut. In my first post, I said it was a 1979, its actually a 78, does that make any difference? Any idea why the nut wont come off? any suggestions?