Ok, I have done some searching, but I don't think I found a definative answer. I have an older Nexus 7speed hub in good shape, it is the 7S41 model. I am putting it on a recent model schwinn mountain bike frame, and I do know I need a chain tensioner. I am thinking of motoring it. Anybody with a nexus (not the 3 speed), and a shift kit, care to report on its durability? Is offroad possible? (probably unlikely). If it is too much trouble, or it won't handle it, I may sell it, dunno, and not sure. Let me know, I am pretty anxious about setting it up, but don't want to spend too much money if it will just get trashed. Thanks!