Has anyone here, who has a power meter, ever plugged data into the tools on analytical cycling and compared results?
I have a very very hard time believing the "wattage" that's given at the end. I don't have a power meter, but my Polar does record speed, rpm and gradient (which I checked against various maps for that section of the road) so I plugged in that info, with my combined bike and rider weight, threw in a guestimate for the road surface and watched what popped out. This is for a 1.7 mile section of road that averages 20%, which is preceeded by a 3 mile climb at ~11% (varying between 7% and 16%). I normally climb this hill two or three times which makes me believe the result even less - given the way I feel riding up the hill I'd be happy with half the displayed amount.
Before anyone tells me to stop eating pork pies, bbq and quit the beer, that weight is me with bike, water bottles, little saddle bag with random **** and the kitchen sink. Sometimes, when you're riding out in the boonies up a hill where mountain lions are around the kitchen sink could well come in handy.
So, the numbers:
[size=-1]Frontal Area[/size][size=-1]0.50[/size][size=-1]m2[/size][size=-1]Coefficient Wind Drag[/size][size=-1]0.50[/size][size=-1]dimensionless[/size][size=-1]Air Density[/size][size=-1]1.226[/size][size=-1]kg/m3[/size][size=-1]Weight[/size][size=-1]93.1[/size][size=-1]kg[/size][size=-1]Coefficient of Rolling[/size][size=-1]0.007[/size][size=-1]dimensionless[/size][size=-1]Grade[/size][size=-1]0.200[/size][size=-1]decimal[/size][size=-1]Wind Resistance[/size][size=-1]0.7[/size][size=-1]kg m/s2[/size][size=-1]Rolling Resistance[/size][size=-1]6.4[/size][size=-1]kg m/s2[/size][size=-1]Slope Force[/size][size=-1]182.6[/size][size=-1]kg m/s2[/size][size=-1]Cadence[/size][size=-1]55.[/size][size=-1]rev/min[/size][size=-1]Crank Length[/size][size=-1]180.[/size][size=-1]mm[/size][size=-1]Pedal Speed[/size][size=-1]1.04[/size][size=-1]m/s[/size][size=-1]Average Pedal Force[/size][size=-1]402.6[/size][size=-1]kg m/s2[/size][size=-1]Effective Pedaling Range[/size][size=-1]70.[/size][size=-1]degree[/size][size=-1]Effective Pedal Force[/size][size=-1]1035.3[/size][size=-1]kg m/s2[/size][size=-1]Speed[/size][size=-1]2.20[/size][size=-1]m/s[/size][size=-1]Power[/size][size=-1]417.4[/size][size=-1]watts[/size]
I have a very very hard time believing the "wattage" that's given at the end. I don't have a power meter, but my Polar does record speed, rpm and gradient (which I checked against various maps for that section of the road) so I plugged in that info, with my combined bike and rider weight, threw in a guestimate for the road surface and watched what popped out. This is for a 1.7 mile section of road that averages 20%, which is preceeded by a 3 mile climb at ~11% (varying between 7% and 16%). I normally climb this hill two or three times which makes me believe the result even less - given the way I feel riding up the hill I'd be happy with half the displayed amount.
Before anyone tells me to stop eating pork pies, bbq and quit the beer, that weight is me with bike, water bottles, little saddle bag with random **** and the kitchen sink. Sometimes, when you're riding out in the boonies up a hill where mountain lions are around the kitchen sink could well come in handy.
So, the numbers:
[size=-1]Frontal Area[/size][size=-1]0.50[/size][size=-1]m2[/size][size=-1]Coefficient Wind Drag[/size][size=-1]0.50[/size][size=-1]dimensionless[/size][size=-1]Air Density[/size][size=-1]1.226[/size][size=-1]kg/m3[/size][size=-1]Weight[/size][size=-1]93.1[/size][size=-1]kg[/size][size=-1]Coefficient of Rolling[/size][size=-1]0.007[/size][size=-1]dimensionless[/size][size=-1]Grade[/size][size=-1]0.200[/size][size=-1]decimal[/size][size=-1]Wind Resistance[/size][size=-1]0.7[/size][size=-1]kg m/s2[/size][size=-1]Rolling Resistance[/size][size=-1]6.4[/size][size=-1]kg m/s2[/size][size=-1]Slope Force[/size][size=-1]182.6[/size][size=-1]kg m/s2[/size][size=-1]Cadence[/size][size=-1]55.[/size][size=-1]rev/min[/size][size=-1]Crank Length[/size][size=-1]180.[/size][size=-1]mm[/size][size=-1]Pedal Speed[/size][size=-1]1.04[/size][size=-1]m/s[/size][size=-1]Average Pedal Force[/size][size=-1]402.6[/size][size=-1]kg m/s2[/size][size=-1]Effective Pedaling Range[/size][size=-1]70.[/size][size=-1]degree[/size][size=-1]Effective Pedal Force[/size][size=-1]1035.3[/size][size=-1]kg m/s2[/size][size=-1]Speed[/size][size=-1]2.20[/size][size=-1]m/s[/size][size=-1]Power[/size][size=-1]417.4[/size][size=-1]watts[/size]