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Howard
@Jon.
Enough! Enough!
I'll be getting myself a 40t if I wear out the 38t over summer. Some have been complaining about dropping chains with a 38t but not a 42t. It makes sense that a bigger chainring should have more chain wrap and therefore better chain-holding capabilities but I can't see it making much difference when 29ers are running as low as 30t chainrings.