It's simpler than that. "Assuming" your gears ratios are MATCHED to the RD cage. Small overlapped ratios and NO HUGE GAPS in gearings!
Big Chainring + smallest cog, cut chain where RD cage is more/less pointing vertical to ground, as measured from the center of the two pullers.
Last edited by jsmithepa; 08-04-08 at 01:46 PM.