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I'm in the process of giving 1x a crack too, and have settled on 48 x 11-32.
It give more or less the same total GI spread as 53/39 with 12-25 cassette which I've currently got on one of my road bikes.
But, YMMV and of course will be subject to your local terrain. -
I have a 40 on my crosser - works pretty nicely for road. I would err on the lower side if you have a choice.
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I ran 11-32 to 50t and loved it. I'm currently using an 11-28 and it's still fine but I would like to drop to a 48
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46t will work well, it's just on the theshold of nearly being small for a road bike, but plenty for everything, you just need to gun it up steep hill standing up.
smac
𝔒𝕨𝖑𝘡
Jules
edscoble
@Hefty
I've ordered an 11-32 cassette.
What size front ring should I go for?
I'm thinking a 46, which should give 40mph at a 120rpm downhill spin and 6mph for a 50rpm uphill grind.
Thoughts pls.