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Gravel bike Gear-inches

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Old 02-02-18, 08:30 PM
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Abu Mahendra
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Gravel bike Gear-inches

What gear-inches are you good folks running on the low end?
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Old 02-02-18, 09:38 PM
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lowest gear on a geared bike or singlespeed? I ride mid-high 50s for SS. 36/17 on 700C 32mm tires at the moment.
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Old 02-02-18, 09:42 PM
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I have a 30-32 low...so with 700Cx44mm tires that comes out to 26.1. Very useful for pea gravel or MMR 15% inclines
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Old 02-02-18, 09:46 PM
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34-36. So just under 26GI, since i use 40mm tires.
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Old 02-02-18, 10:03 PM
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24-28 on 53mm 26ers, about 22".
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Old 02-02-18, 10:09 PM
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Geared, bro...

Nt

Originally Posted by mack_turtle
lowest gear on a geared bike or singlespeed? I ride mid-high 50s for SS. 36/17 on 700C 32mm tires at the moment.
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Old 02-02-18, 11:37 PM
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Originally Posted by mstateglfr
34-36. So just under 26GI, since i use 40mm tires.
I’m pretty close to this with a 28-30 on 40s too.
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Old 02-03-18, 12:27 AM
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About 25.8 inches according to the online calculators.

It is a 34 ring and a 36 sprocket with 38 mm tires.
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Old 02-03-18, 08:58 AM
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I have a 30 - 32 low as well so 26.1.

It going to work out pretty well those steep punchy flint hills in Kansas.
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Old 02-03-18, 11:48 AM
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30-36 with 650Bx47 tires. 22.6 gear inches.
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Old 02-03-18, 02:54 PM
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17"
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Old 02-03-18, 07:22 PM
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22.3
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Old 02-04-18, 06:35 AM
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tyCycler
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Diverge Expert. 24.7" 38mm tires 38t front, 42t rear. Came stock with 42t front, I swapped it out for a 38t.

Sheldon Brown's Bicycle Gear Calculator
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Old 02-05-18, 09:09 AM
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29". Which means I may be pushing my bike up a couple climbs during some races I plan to do this summer.
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Old 02-05-18, 09:48 AM
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About 29" (34 chainring and 32 cog). Good for the climbs around here (kansas) which at most get to 15% in spots and never last more than a 1/2 mile or so.

If I regularly rode in mountains I might go with with a 34 or 36 cassette -- but at a certain point you're just going so slow with those gears the bike doesn't stay upright.

Never had to walk a hill with my combo though. (knock on wood).
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