Re:Woman Rides Bicycle to 183.9 MPH, a New World Record
by userbinator on Tuesday September 18, 2018 @09:52PM
(#18021030)
More simply, it's a ratio of ~26.7:1 --- the wheel turns approximately 26.7 times for each turn of the crank.
Using some of the other numbers mentioned here, we can calculate that at her top speed of 296km/h she was pedaling at ~126RPM, and the wheels of the bike spinning at ~3377RPM.
If we knew the torque, or alternately the "stroke" of the crank and the average force she was exerting, we would also be able to find out her power output in W or HP.
Edit: some searching around reveals that 120-130RPM is usually where peak power is for cyclists, which corresponds with roughly where she was at top speed: https://www.ncbi.nlm.nih.gov/pubmed/17562069
...and it makes me wonder if she had another gear, would she be able to keep accelerating beyond that. She would've probably been producing 1-2HP at that speed.
Using some of the other numbers mentioned here, we can calculate that at her top speed of 296km/h she was pedaling at ~126RPM, and the wheels of the bike spinning at ~3377RPM.
If we knew the torque, or alternately the "stroke" of the crank and the average force she was exerting, we would also be able to find out her power output in W or HP.
Edit: some searching around reveals that 120-130RPM is usually where peak power is for cyclists, which corresponds with roughly where she was at top speed: https://www.ncbi.nlm.nih.gov/pubmed/17562069
...and it makes me wonder if she had another gear, would she be able to keep accelerating beyond that. She would've probably been producing 1-2HP at that speed.