Okay, help me out here. I'm wondering if anyone can tell me (approx.) what kind of CADENCE a record holder in the One Hour Record maintains!?! I'm just curious. For MY age bracket (56), which is what I'm interested in, I think the record is about 28 miles--or 28 miles per hour overall.
I can figure everything out, but get stuck when it comes to gear ratios. LOL I know how many times the wheels go around! That's simple math. But, at what rate or cadence do the cranks go 'round on a standard track bike--when you're doing 28 mph?!?!?!
Okay, help me out here. I'm wondering if anyone can tell me (approx.) what kind of CADENCE a record holder in the One Hour Record maintains!?! I'm just curious. For MY age bracket (56), which is what I'm interested in, I think the record is about 28 miles--or 28 miles per hour overall.
I can figure everything out, but get stuck when it comes to gear ratios. LOL I know how many times the wheels go around! That's simple math. But, at what rate or cadence do the cranks go 'round on a standard track bike--when you're doing 28 mph?!?!?!
Sincere thanks!!!
~ Michael (in Seattle)
That depends on what gear you choose. You taylor the gear to the cadence you want to pedal at a given speed. Almost all successful hour record attempts have been completed at an average of 105 rpm cadence. So pick a gear that allows you to spin that cadence at 28 m/h. Check out analytical cycling's gear/cadence/speed calculator at www.analyticcycling.com for the math calculations.
Here's the simple math: cadence in RPM=[#of teeth sprocket]/[# teeth chainring]*[speed in MPH]/[circumference of tire in meters]*27.03(<---unit conversion factor)
So assuming (not sure what the "standard" is) your track bike has 700c tires and is geared 53-14 then your cadence=14/53*28/2.1*27.03=95.2 RPM
