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: http://strava.com/clubs/fastfitnesstips
Patreon: https://www.patreon.com/fastfitnesstips