bigger ring - less teeth engaged on the cog - vibration perhaps (in theory)
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I ride a Moulton, which required a 58t chainring to compensate for the small wheel, and it's quite noisey at smaller cog.
@edscoble started
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^
I ride a Moulton, which required a 58t chainring to compensate for the small wheel, and it's quite noisey at smaller cog.