TheChai Posted September 2, 2013 Report Share Posted September 2, 2013 (edited) P= angular velocity X torque Angular velocity-the speed your legs can turn your cranks Torque- the force your legs put into your cranks The faster you move your legs and the more force you kick with the more power you get. Longer cranks give you more torque at slower angular velocity Shorter cranks less torque but faster angular velocity Assuming leg strength is high and constant, then power is limited by angular velocity.. So shorter cranks if you have the strength to kick them I hope that helps! Edited September 2, 2013 by TheChai 3 Link to comment Share on other sites More sharing options...
Perez Posted September 3, 2013 Report Share Posted September 3, 2013 Sometimes in Portugal the TV sucks, and in search for fun i come here to have a good laugh with all the answers. Was this not supposed to be a place were we can help eachothers and share opinions? Damn. Link to comment Share on other sites More sharing options...
FamilyBiker Posted September 3, 2013 Report Share Posted September 3, 2013 Sometimes in Portugal the TV sucks, and in search for fun i come here to have a good laugh with all the answers. Was this not supposed to be a place were we can help eachothers and share opinions? Damn. no,thats the other place... Link to comment Share on other sites More sharing options...
dezmtber Posted September 3, 2013 Report Share Posted September 3, 2013 I think the word everyone is looking for is gain ratio. Rather than gear ratio. A gain ratio calcuation includes cog sizes wheel sizes and crank length. Sheldon brown knows 1 Link to comment Share on other sites More sharing options...
aener Posted September 3, 2013 Report Share Posted September 3, 2013 I think the word everyone is looking for is gain ratio.I think that's the word one person is looking for. 1 Link to comment Share on other sites More sharing options...
dave33 Posted September 3, 2013 Report Share Posted September 3, 2013 I think that's the word one person is looking for. Maths you mean. I'm glad some one has finally understood this and broken it down clearly for you to understand But no doubt you will try and twist it Link to comment Share on other sites More sharing options...
chimpanzyyyy Posted September 3, 2013 Report Share Posted September 3, 2013 2 Link to comment Share on other sites More sharing options...
*gentlydoesit Posted September 3, 2013 Report Share Posted September 3, 2013 I'm backing dave33 in principal. For the cranking force to remain constant through acceleration the crank would need to reduce in size... ergo gears! Therefore although cranking from a smaller radious from stationary would require more effort, once forward motion was achieved it would be sustainable for longer. Link to comment Share on other sites More sharing options...
dezmtber Posted September 3, 2013 Report Share Posted September 3, 2013 those 158 mod cranks would make the pedal feedback the same as most 24 and 26 bikes. mods runing 160-165 cranks are quite a bit easier to pedal than 24 with 170 and 26 with 175 cranks. a 175 crank on a 24 bike should feel much like a mod running 165 Link to comment Share on other sites More sharing options...
isitafox Posted September 3, 2013 Report Share Posted September 3, 2013 Handbags down girls Link to comment Share on other sites More sharing options...
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