JRA...
Join Date: Oct 2003
Location: philly
Posts: 839
Bikes: trek 520 & 736, DeRosa Professional, Fuji Professional, Raleigh International 3-speed, Saronni (any info people?), Humber 3-speed, Raleigh Sports, Carlton Grand Prix coming soon!
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have you tried it with a 109? since chainline for a double in theory is measure between the two chainrings, good chance it'll be good enough for to be gov't work, particularly with a 3/32" chain.