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Looking for the (supposedly) simplest solution,
I now run into the Shimano MA, MB etc designations,
50/34 which is currently fitted on the bike is MA
52/36 is MB
Does this mean that any attempt to 'change up' from the British Cycling U16 reg meeting 36T ring to the 50T will result in chain mangling?Won't be a problem on the Hillingdon track as the larger ring will be 'locked off'.
mespilus-
50/34 which is currently fitted on the bike is MA
52/36 is MB
Does this mean that any attempt to 'change up' from the British Cycling U16 reg meeting 36T ring to the 50T will result in chain mangling?I'd be pretty relaxed about that, but then I grew up in an era when double chainrings were a novelty and they certainly didn't have any ramps/pins/lowered teeth. Using a 36 with a 50 might take you back to shifting that's only as good as the previous component generation, not the previous millennium. 36 officially works with either a 46 or a 52 anyway, so the synchronisation can't be that critical.
gbj_tester
I thought 52/36 was all the go with the hipster-roadies these days. Which cranks do you have? Should be pretty easy to get a 36 for either 110mm 5-bolt or the new 6800/9000 pattern, Shimano do a 36T for 4-bolt 110mm and there are millions of possibilities in 5-bolt 110mm, since it actually is one of the few genuine standards in cycling gear.