Originally Posted by
ColonelJLloyd
That's what I wanted to say. I agree that when you look at a perfect circle mated to a non-perfect cicle it doesn't look like it would play nice, but apparently it does.
but isn't it an oval so that when the chain is wrapped around both "points" of the oval (the long ends are up and down) there's more contact than when only one long end is wrapped (when they're horizontal)? maybe I'm just thinking about it all wrong.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"