Originally Posted by
Chris Chicago
wow, I just caught that reversal deal. it is the bizaro version of my den! I didnt use a mirror, shot it with the built in cam on a macbook air. that is wild. I will check the video to see if it's like that or tinypic flipped it.
your second point about bevel, i'm not sure I follow. how do I check this?
You mean that wasn't intentional? Indeed, what a trip!
Some older freewheels had sloping teeth. The edges of the teeth were beveled so the teeth were lower on the outside facing away from the spokes and higher on the inside. Depending on the make, it may only be on select teeth on the cogs, such as two shorter teeth on the cogs. Sometimes 3 shorter teeth on bigger cogs. But the bevel would allow the chain more ease to slip over the cogs and then drop and engage. If the bevel is flipped around, the chain might have to go just a bit higher. But if it's too tall, the chain bends, can catch and goes a bit too far and catches the cog 2 shifts over, instead of the next one.