flanging, I suspect.
or more likely ... it to come off and decapitate a small child

/if you need to know about chains, what happens if you only want to ride a shaft-drive bike?
( the mighty badger Aphrodite, on a bar stool, by your side, Mon 4 Jul 2005, 15:07, archived)

Ach it was
only for the theory test - everyone does the same one. And then instantly forgets it all :D
( Dekazer, Mon 4 Jul 2005, 15:30, archived)