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1x Converts: 52 x 11-36 or 11-40?
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I have an XTR Di2 rear derailleur. On my F-Si 32 x 11-42 isn't too bad though sometimes I'm left with the choice of either spinning at 110rpm or grinding at 70rpm to hit my desired speed. Maybe I should just plan on traveling with multiple cassettes? 11-32, 11-36, and 11-40?
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Re: 1x Converts: 52 x 11-36 or 11-40? [GreenPlease] [ In reply to ]
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you don't mention the type of terrain you plan on traversing or what type of bike this is going on. assuming road bike and mild terrain, 52 x 11/36 should probably see you through most things. 52 x 11/40 even more stuff. 50 x 11/40 most stuff, probably. also depends on your strength and your riding characteristics. you've been on ST long enough to know all these things...!
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Re: 1x Converts: 52 x 11-36 or 11-40? [GreenPlease] [ In reply to ]
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GreenPlease wrote:
I have an XTR Di2 rear derailleur. On my F-Si 32 x 11-42 isn't too bad though sometimes I'm left with the choice of either spinning at 110rpm or grinding at 70rpm to hit my desired speed. Maybe I should just plan on traveling with multiple cassettes? 11-32, 11-36, and 11-40?

A F52/R36 is pretty much exactly the same gear ratio as a F36/R25. So on any flatish course that you would have run a mid-compact 2x11 with 11-25 cassette, use the 11-36 cassette with your 52T chainring.

The 11-40 cassette with a 52T single chainring gives you essentially the same bottom climbing gear as a mid-compact with an 11-28 cassette.

Having a choice of cassettes to suit various course conditions is smart, whether you're running 1x or 2x.


I've done the math on various cassettes you might use in a 1x road configuration. Even with an 11-40 cassette, you should never have more than a 16% difference in cadence between any two adjacent cogs at the same speed.

"They're made of latex, not nitroglycerin"
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Re: 1x Converts: 52 x 11-36 or 11-40? [jkhayc] [ In reply to ]
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jkhayc wrote:
you don't mention the type of terrain you plan on traversing or what type of bike this is going on. assuming road bike and mild terrain, 52 x 11/36 should probably see you through most things. 52 x 11/40 even more stuff. 50 x 11/40 most stuff, probably. also depends on your strength and your riding characteristics. you've been on ST long enough to know all these things...!

Oh I "know" I guess I was just looking for personal anecdotes and experiences with similar gearing.
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