rrrrrrrrrrrrrr.....


almost there...look at the cage when chin rubs in large CR/small cog and small CR/large cog.

either twist the small CR/large cog screw 1/4 turn..pedal...does the chain fall off ? NO ?

if no then ad lines 8 and 14 thru 9...

If NO then does the noise cease ?

if not or before twisting the screw, look and think about the cage position as it relates to turning the cage with the seat post mount or raising or lowering the mount.

This is important, requires a little special reasoning.

If you can only eliminate 1 rub position then probably go for the small CR/large cog...

when do you use the large CR/small cog ?

move the cage around experimentally with the seat post mountjust to see what goes on there at the large CR...you know...

rrrrrrrrrrrrrrrrerk clang