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Cadence chart?(5 posts)

Cadence chart?Ken of Fresno
Apr 12, 2002 9:40 PM
Is there a chart that will give you your cadence based on a specific speed and gear combination?

For ex: 20mph in a 53x19 = 90rpm or whatever (based on a 23c tire).

Anybody know of such a ting???

Thanks,
Ken
Yep! Everything you wanted to knowcoonass
Apr 12, 2002 9:54 PM
http://www.analyticcycling.com
Tons of info for the want-to-knows.
This site rocks! Thanks for the tip! (nm)Ken of Fresno
Apr 12, 2002 10:04 PM
Make your own?Kerry
Apr 13, 2002 5:58 AM
Since we already know that you are a computer user, is it possible you know how to use a spreadsheet? The simple formula for speed as a function of cadence and gear is:

(chain ring teeth)/(cog teeth)*26.25*0.295*cadence/100.

26.25 is the wheel diameter of a standard lightweight wheel (23mm tire). The first three elements gives you the "gear inches". Your speed is (gear inches)*0.295 at 100 rpm, so multiplying the whole thing by the ratio of your cadence to 100 gives actual speed. You can do this in your head while riding (thus no need for a bike computer) - just use 0.3 instead of 0.295.
It just keeps getting better. You guys are too cool. (nm)Ken of Fresno
Apr 13, 2002 7:17 AM