|   How many pedal revolutions does a typical ride take? | Billy Zoom
Sep 7, 2002 7:01 AM | | I was riding last night and as I was about to begin climbing a somewhat long hill, I wondered how long it was to the top and for a moment wished I hadn't removed my bike computer. So I figured I'd count the amount of complete pedal revolutions just to give me some idea of at least the amount of physical work involved. I figured maybe 600 strokes.
1,647!!!!!!!! Just for the hill, which wasn't even the majority of the ride. It made me appreciate all the work my legs do. I would have never guessed that I pedal that much. I wonder how many pedal revolutions a typical ride takes. I feel like Andy Rooney: "Didja ever wonder why people put $3,000 dollar rims on a $1,000 car? . . ."
(Out of curiosity, how can I get an idea of how long that hill is? It was all small chainring up front (11 tooth), and I'd guess the typical chainring in the back was 28 tooth. Tires are 2.1's. How can I figure distance from that?)
What a lame post this is. I haven't had my coffee yet.
Joel |
| Do a....................... | Mike T.
Sep 7, 2002 7:38 AM | | ....."rollout" measurement! Select that gear and measure how far the bike travels in one rev of a pedal. Now multiply that distance by the number of revs you counted and yer in bizzness. And just think, math was my worst subject! Maybe it was the coffee I just had.
11 tooth front chainring? Methinks math was YOUR worst subject or your keyboard farted. |
| Why does it have to be one or the other? | Billy Zoom
Sep 7, 2002 1:00 PM | | Maybe math was my worst subject AND my keyboard farted. Don't box me in, pal. Ha! Anyhow, no coffee is what I plead, Your Honor. 22 tooth front, duh.
Joel |
| Elementary school math | Biking Viking
Sep 7, 2002 4:40 PM | | * The circumference of your wheel is approximately 28"*3.14(pi) = 88".
* One mile equals around 63,400 inches (I'm a metric guy and too lazy to find the exact number with Google).
* For each mile, your tire does 63400/88 = 720 revolutions.
* The low gearing you chose causes the crank to do 28 revolutions each time your rear wheel does 11.
* In other words, your crank does 720*(28/11) = 1,833 revolutions per mile.
BV |
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