• 04-11-05, 01:59 AM
Twitchology
Easy way to figure out my cadence?

I'm riding 42/16 on 700x23's... any way to guesstimate my cadence at ~20 or 25 mph?
• 04-11-05, 02:02 AM
baxtefer
• 04-11-05, 02:03 AM
Twitchology
Oh yeah, and cranks are 165s....ooh awesome, thanks for the linky.
• 04-11-05, 07:14 AM
travsi
here's a handy online calculator...
http://www.panix.com/~jbarrm/cycal/cycal.30f.html
• 04-11-05, 12:28 PM
Terror_in_pink
if you want to get all crazy just get a cyclometer that has a cadence counter.
• 04-11-05, 12:55 PM
ofofhy
Or, just count the number of rotations of the pedal in 15 seconds and multiply by four. Like measuring your heartrate.
• 04-11-05, 01:36 PM
BostonFixed
Pedal fast enough so you almost spin out. Too much and you spin out, and too little and you go slow.
• 04-11-05, 02:07 PM
Crashtest
Low tech solution that works for any gear: count how many times you pedal in 15 seconds and multiply by 4. ( or count for 10 seconds and multiply by 6)
• 04-11-05, 02:34 PM
eubi
Quote:

Originally Posted by Crashtest
Low tech solution that works for any gear: count how many times you pedal in 15 seconds and multiply by 4. ( or count for 10 seconds and multiply by 6)

Or count six seconds and multiply by ten. A bit easier, but you might sacrifice accuracy.
• 04-11-05, 02:40 PM
DCCommuter
If you are musical, try singing a song with a known tempo in time with your pedaling.

Here is a handy chart:
http://www.ssqq.com/information/speedcha.htm

For instance, "Bad to the Bone" is 96 beats/minute. "Sultans of Swing" is 147 and "In the Mood" is 81.
• 04-11-05, 07:26 PM
ZackJones
Even easier method: count strokes for 6 seconds and add 0 - no multiplication needed :)
• 04-11-05, 07:54 PM
recursive
Quote:

Originally Posted by ZackJones
Even easier method: count strokes for 6 seconds and add 0 - no multiplication needed :)

Very sneaky, but that's still multiplication. If you want to avoid multiplication, just count for 60 seconds.
• 04-11-05, 07:55 PM
operator
Quote:

Originally Posted by ZackJones
Even easier method: count strokes for 6 seconds and add 0 - no multiplication needed :)

Now you could be off by as much as 12 rpm in either direction.
• 04-11-05, 08:04 PM
Guest
I find that 6 seconds is not very accurate because it just doesn't give you a lot of time to count each pedal stroke.

Koffee
• 04-11-05, 09:57 PM
krazyderek
• 04-12-05, 05:48 AM
ZackJones
Quote:

Originally Posted by operator
Now you could be off by as much as 12 rpm in either direction.

What makes you say that?
• 04-12-05, 05:59 AM
jabike
I normally ride my trainer one day a week which tells me my cadence. As a result I can "feel" fairly accurately what my cadence is on the road. I find I have a tendency to push bigger gears at a lower cadence if I don't ride my trainer. Then on the road I count my strokes from time to time for a minute to verify that I am in the range I want to be. I rest at 90-95, spin at 95-100, and push from time to time at 105-110.
• 04-12-05, 08:14 AM
Don Cook
Here's a gear ratio & cadence spreadsheet I've posted before. As far as crank length, when your chainring makes one revolution so does your crank arm. No matter how long or short it is. It is the same thing as when people ask where should the magnet for a computer be placed on the spoke? Closer to the hub or closer to the rim? It makes no difference. The magnet will always make one revolution for each wheel revolution no matter where it's placed. Crank length affects mechanical advantage and the real speed of your pedaling effort, but not revolutions.
• 04-12-05, 11:05 AM
operator
Quote:

Originally Posted by ZackJones
What makes you say that?

Think inaccuracy of 1 or 2 rpm multiplied by 10.