Thread: Calculating Junior Gearing
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Old 02-02-11, 02:59 PM
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jsutkeepspining
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Originally Posted by headshock
i find this most helpfull
http://home.earthlink.net/~mike.sherman/shift.html
in new zealand we are restricted to a rollout of 6.61 metres which is approximatly 21.6 ft
for under 17
i ride either 39/13
or 53/17
wow and i thought being restricted to the 50x14 was lame. what do you spin out at like 25 mph. time trials must be interesting haha.


EDit: actually just checked it out, you would go a little over 27 mph in the 50/17 spinning at 120 rpms.
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