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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Gearing Question
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Author Topic: Gearing Question  (Read 582 times)

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hooga1975

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Gearing Question
« on: November 10, 2007, 04:40 PM »
What size chainring will I need to achive the same gearing as 44/16 on 26" wheels if I am planing on using a 16t free wheel?
Cheers
Lee

Offline stidds

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Re: Gearing Question
« Reply #1 on: November 10, 2007, 04:54 PM »
Lee

I think that a 34 front chainring will have a similar effect.

44/16 on 20" wheels = 55 ratio
34/16 on 26" wheels = 55.2 ratio

Have a look at these 2 websites for information.

20" gear ratios

http://www.profileracing.com/manuals/racergear.pdf

26" gear ratios

http://www.machinehead-software.co.uk/gear_inch_ratio_table26.html

hooga1975

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Re: Gearing Question
« Reply #2 on: November 10, 2007, 06:13 PM »
cheers stidds :daumenhoch:

darkslider

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Re: Gearing Question
« Reply #3 on: November 10, 2007, 07:41 PM »
If your running a longer top tube than a regular bike would you go down slightly on gearing? I'm thinking there would be more drag having extra length in rear stays and chain. What other factors aren't taken into account in gearing chart, weight of rider, fitness and height?

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