I have A 17/19 Dos Enos on one side and 16t fixed cog on the other (on my 650b Quickbeam) and 38/40 chainrings (double cranks so no guard) I use the 38/19 early in the season, or for recovery rides, on dirt roads/trails, in headwinds, or when I get tired. I use the 40/17 when I’m feelin’ frisky or want to work harder/go faster. I guess I shift at least once on most rides over 20 miles. I haven’t used the 16t yet this year—I tend to alternate—I get into fixed riding and do it a lot or avoid it altogether…and I’m currently in avoid mode…
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