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08-11-04, 10:36 AM
Hey all. My buddy just linked me this site: http://analyticcycling.com/ForcesPower_Page.html
I typed in the numbers for our 29.3MPH sprint yesterday, and it came up saying that I was putting out 420.5 watts. That sounds a smidge high to me. We've only been training for about a month (rode last summer before getting hurt, but all of that was lost, I'm sure). I added up my weight, bike weight, and clothes/gear and came up with 244 pounds, or 111 kg. We ride on very rough roads (my partner joked yesterday that the road is so rough we probably neverhave both wheels on the ground at the same time), and at a bit above sea level, but nor 1500m, so I went halfway between that and put in the number of 1.113.
29.3MPH converted to m/s (meters per second, right?) is 13.02, the wind resistance numbers I left alone, though I should probably up it a smidge. Cranklength is 177, cadence about 120, and the effective pedaling range I left at 70. That pedal stuff doesn't affect the power outcome on the calculator anyway.
So is 420.5 watts a reasonable number? I also did the numbers for a 3 mile time trial at 21.25 MPH and came up with 199.4 watts. That's almost Lance there, right? That sounds a tad off. Maybe Lance can hold it quite a bit longer, but it just doesn't seem right that if Lance weighed the same as me, and on the same bike, we would be dead even in a sprint to 29.3MPH for a few seconds.
Also, just to see, I did our Sunday ride, which was 28 miles @ 19MPH. 19MPH is 157.3 watts. That sounds much more reasonable. But if that's the case, it proves the other numbers to be correct.... right?
Help!
Cole
I typed in the numbers for our 29.3MPH sprint yesterday, and it came up saying that I was putting out 420.5 watts. That sounds a smidge high to me. We've only been training for about a month (rode last summer before getting hurt, but all of that was lost, I'm sure). I added up my weight, bike weight, and clothes/gear and came up with 244 pounds, or 111 kg. We ride on very rough roads (my partner joked yesterday that the road is so rough we probably neverhave both wheels on the ground at the same time), and at a bit above sea level, but nor 1500m, so I went halfway between that and put in the number of 1.113.
29.3MPH converted to m/s (meters per second, right?) is 13.02, the wind resistance numbers I left alone, though I should probably up it a smidge. Cranklength is 177, cadence about 120, and the effective pedaling range I left at 70. That pedal stuff doesn't affect the power outcome on the calculator anyway.
So is 420.5 watts a reasonable number? I also did the numbers for a 3 mile time trial at 21.25 MPH and came up with 199.4 watts. That's almost Lance there, right? That sounds a tad off. Maybe Lance can hold it quite a bit longer, but it just doesn't seem right that if Lance weighed the same as me, and on the same bike, we would be dead even in a sprint to 29.3MPH for a few seconds.
Also, just to see, I did our Sunday ride, which was 28 miles @ 19MPH. 19MPH is 157.3 watts. That sounds much more reasonable. But if that's the case, it proves the other numbers to be correct.... right?
Help!
Cole