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How to find the best Crank Length using Science (effect on position, torque, cadence & bikefit)

Lets talk about crank length, specifically how does it affect bike fit and position? How much of a change is significant? We also conduct a "frankencrank" experiment with asymmetrical cranks. Crank Fit Science! 0:00 Why crank size matters 1:15 Bike fit survey 1:30 97% ride 4x sizes 2:10 Crank vs inseam chart 3:15 Why to fit longer cranks 4:00 Metabolic cost vs crank size 4:30 Crank sizing App 5:30 Crank size vs bike fit 7:30 Effect of putting saddle down 8:35 Why to fit shorter cranks 9:12 Crank size vs forward position 10:13 Bike fit software: MotionYsis 11:06 Pedal strike issues 12:06 Pedal strike angles 13:20 Crank size quick tips 16:24 Crank experiment chart 17:25 What's the smallest change you feel 18:10 Crazy crank experiment! 20:05 How to find best crank length 20:45 Are cranks too difficult to change? 22:00 Patreon and Strava Shout Out CyclingApps Crank App http://bit.ly/cacranks CyclingApps Crank Webclient: http://bit.ly/cawcranks Our bikefit dataset: http://bit.ly/bikefitdata Strava club:   / strava   Patreon:   / fastfitnesstips