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emily_in_nc
09-28-2010, 08:34 AM
Ok, gear heads...I'm not smart enough to figure this out: Which is the lower gear:

38T crank & 18T cog
44T crank & 20T cog

Looking at single-speed beach cruisers...

Thanks!

OakLeaf
09-28-2010, 08:39 AM
38x18 = 57 GI
44x20 = 59.4 GI (taller)


http://sheldonbrown.com/gears/


Really to compare two speeds, all you need is the gain ratio = front/rear (i.e., how many times will the rear wheel turn, for every turn of your cranks?)

emily_in_nc
09-28-2010, 11:45 AM
Thanks Oak!