Old 05-10-21, 06:20 AM
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Join Date: Feb 2012
Location: Golden, CO
Posts: 2,194

Bikes: 2016 Fuji Tread

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My 36/50 works fine for me. I live at the border of plains and mountains. I use them both. When I ride east, it's a big ring day. When I ride west, it's a small ring day. I spent a winter in Florida last year and never used the small ring. But it's low enough for me for the big climbs out here. (11-34 rear cassette)

The deciding factor will be your rear derailleur (RD). Try to find its chain wrap specs. Or do this test: Shift to small-small combination and the RD should be fully retracted, with the pulleys almost touching the chain. Then shift to large-large, and the RD cage (line between pulley axes) should be extended at a max 45 degree angle to the ground.

Every two teeth added on a gear will need one more inch of chain.
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