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gbj_tester
onyerbike
Need some advice from the hive mind. About to change crankset which means new 1x chainring(s), and specifically the gearing for target TT's next season. I've listed out all those I intend to enter and roughly what kind of times I think I can expect, assuming average conditions. For fast events this season gone, I ran a 58t and was mostly in the middle third of the 11-25 block, although at times toward the top.
Does it make sense to buy two chainrings, one for 'fast' courses and one for 'slower'? I'm only doing short distances up to 50 miles.
Secondly, in terms of speccing the sizing, does using Bikecalc or similar to work this out the way to go? For flat, fast courses at 95rpm, to keep speeds within the 15t 16t 17t cogs I'd need a 62t front ring which seems enormous...which makes me think I'm doing something wrong!