You probably should have this moved to ebikes but I'll throw in my 2 cents first. I helped a friend install a Bafang on a nice Bianchi steel cross bike. He rides it but I wouldn't. The conversion is heavy. That means the canti brakes are marginal. It was fun cruising up a hill but terrifying on the descent. The max 32mm tires are inadequate w/o enough pressure to make them rocks. The battery attaches to the bottle cage bosses but it is too heavy and was ripping them out. He had to move the battery to a rear rack which made the contraption unstable. IMO, if you need an ebike, spring for a purpose built one. Fat tires, disc brakes, hefty frame. The weight constraints of a pedal bike don't apply.