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Old 11-01-12, 04:23 PM   #1
Darth_Firebolt
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Single speed guys chime in on gear inches

How many gear inches are you guys rolling, and for what terrain?
I know 70 is a good number for an all around road bike, but I've never heard of a general rule for a MTB. In our shop we have one bike rolling 57gi with a suspension fork and another bike rolling 46gi with a rigid carbon fork. Just wondering what other people are having good luck with.
Thanks.
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Old 11-01-12, 05:18 PM   #2
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I'm in Kansas and ride a variety of trails as well as gravel roads. For the easy stuff I'm running 32/17 which is about 54 g.i. Probably step this up later this year. Everything else I ride 32/20 which is 46 g.i. cause I like to clear eveything possible.
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Old 11-01-12, 07:04 PM   #3
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Front Range - Rocky Mountains, CO
Me, & most I know run 32x20 or 32x21 for bigger rides....on 29" bikes.
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Old 11-01-12, 07:28 PM   #4
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Depending on the terrain, I run 32x16, 32x18 or 32x20. cogs are cheap.
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Old 11-01-12, 07:41 PM   #5
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I run a 33X19 on my 29er. On my old 26er it was 32X16.

In hillier places I swap out to a 33X20 or 21.
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Old 11-01-12, 07:58 PM   #6
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I've been experimenting with the low 60gi range for flat urban terrain (road/grass/gravel)
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Old 11-01-12, 09:16 PM   #7
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cool. thanks for the responses, errybody!
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Old 11-06-12, 07:32 PM   #8
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32x16, thinking about 33x16 though.
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Old 11-06-12, 07:35 PM   #9
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2:1 chainring:cog is an excellent starting point for 26" wheels. Adjust as needed.
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