Re: Motorized Bicycle Take a Tip...Leave a Tip
I haven't made the modification for it yet, but I just realized you can use a motorcycle chain tensioner/axle adjuster on a frame with semi-horizontal dropouts by simply facing the rear of the dropout so it's flat instead of angled. You can use an angle grinder or a hand file and grind or file until the dropout is flat, and then you can use any axle adjuster, be it motorcycle or bicycle. I happen to have a motorcycle type laying around. You can face both dropouts and use two adjusters, but I think just the drive side would be sufficient to prevent the motor from torquing the wheel to one side. I always use a wratchet wrench to tighten my axle nuts, so I don't see a concern with the pedal side coming loose.