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edscoble
@madman
I don´t think the dropouts on my frame have enough length to run cogs with two tooth difference. I´ll try to find a second hand 20t sprocket and run 19 and 20.
@edscoble Thanks! I´m running a 47t chainring.
What gearing were you using on that picture? 47x19 is exactly 65GI and 47x20 about 62GI.