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Cadence & The One Hour Record

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Old 15-02.-2005, 03:48 PM   #1
Seattle
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Question Cadence & The One Hour Record

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)
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Old 16-02.-2005, 12:46 AM   #2
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Default Re: Cadence & The One Hour Record

Now where did I put that slide rule anyway....
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Old 16-02.-2005, 06:24 AM   #3
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Default Re: Cadence & The One Hour Record

Quote:
Originally Posted by Seattle
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.
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Old 16-02.-2005, 07:20 AM   #4
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Default Re: Cadence & The One Hour Record

Quote:
Originally Posted by Seattle
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!?!
http://ida.physik.uni-siegen.de/menn/hourrec.htm
Quote:
Originally Posted by Seattle
But, at what rate or cadence do the cranks go 'round on a standard track bike--when you're doing 28 mph?!?!?!
http://www.sheldonbrown.com/gears/
http://www.kreuzotter.de/english/ecadence.htm

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

Last edited by andrello : 16-02.-2005 at 08:13 AM.
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Old 17-02.-2005, 12:14 PM   #5
andrello
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Default Re: Cadence & The One Hour Record

In case you're interested (and are algebraically crippled) here's the speed formula:

speed in MPH=[# teeth chainring]/[# teeth sprocket]*[cadence in RPM]*[circumference of tire in meters]/27.03(<---unit conversion factor)
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