gvcormac wrote: ↑June 8th, 2022, 1:05 pm
JaapvanE wrote: ↑June 8th, 2022, 11:02 am
gvcormac wrote: ↑June 8th, 2022, 9:05 am
This is similar to what I do on my Bike Erg with toe clips. I don't put any force on them and certainly don't "pull up" on the pedals but I like them to help keep my feet positioned.
But the "pull up" action on a normal racing bike is quite accepted and beneficial, while to my understanding, a forceful recovery from the legs will kill the speed of the boat on the water.
I haven't seen concrete evidence to this effect. Certainly you don't need to maintain positive pressure to keep your feet on the pedals, but it is not clear to me that net "pulling up" is a benefit. Pushing forward with the toes at the top of the stroke, perhaps.
Here's the science. "...there were no significant differences (p > 0.57) in the metabolic power consumed for pedaling at 50,100, and 150 W: Nike Free and flat pedals: 445.7, 619.0, and 817.9 W; Nike Free and quill pedals with toe clips: 428.7,600.7, and 818.0 W and cycling shoes with clipless pedals: 441.6, 612.3, and 806.4 W, respectively. Though cycling shoes may have comfort or safety benefits, they do not enhance efficiency."
https://www.researchgate.net/publicatio ... _bicycling
Net is no efficiency benefit from pulling up on pedals, and pros don't do it.
https://www.youtube.com/watch?v=KUEaN9FKGLE Controlled testing is killing what I knew about cycling. Lower pressure, wider tires are faster on anything except smooth wood tracks and clipless pedals are only good to keep your feet from falling off the pedal sprinting, not much else.