• With an 11-36 mtb cassette I'll have a 27.5GI lowest gear (assuming 38mm tyres), but tbh that configuration is simply what the chainset came with. I realised this morning looking at my compact roadie chainset that the 36 is bigger than the small ring on a compact (obvious I know, I just hadn't thought of it), so I could definitely be persuaded to swap it out.

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