Join Date: Oct 2002
Location: Annandale, New Jersey
Bikes: 2008 Trek Portland, 1989 Nishiki Altron
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Don't think it will work with the chain rings on the front, since the chainrings on an 8/9 spped setup are thinner, even on the front, so if you try it, the chain would bee too loose side to side, and the chain would never be tensioned properly. If you get gears that are made for 7 speed and attach them to the crankset, then it can be done. Not all chain rings are equal.