Hot answers tagged power
There are some bike hubs containing an electrical motor inside. If you google "bike hub motor" and take a look at the images, you'll get the idea. I think these ones are ideal since they require minimal changes to the overall bike structure, allowing for normal riding if the motor is not working, and they don't burn evil oil: you just plug the bike to the ...
MY first thought was MTFU and get fitter pedalling further. It might not be as hard as you think once you get used to it. However, for a 20k commute, definitely go with an electric hub motor. Loads available off the shelf. Easy to fit and use, very economical and reliable with low/no maintenance. Also nice and quiet.
Take a look at TrainerRoad.com to see if your trainer is on their list and you may be able to use a Speed/Cadence sensor with an ANT+ USB stick in your computer to use what they call "Virtual Power". They don't actually measure your power output, but based on known power curves of the trainer at given speed/cadence they run through some formulas to give you ...
Your weight is used for calculating your power to weight ratio (W/kg). Weight of bike/clothes/other gear is not taken into consideration. It is considered that these things weight about the same for every "pro" cyclist. So you should use your own weight because everybody else is doing that. This way you can compare your results with your competition.
I believe you are asking two different questions: the first, how to use Coggan's Power Profile; and the second, given power at one duration, how to extrapolate and predict power at other durations. But first, an historical aside: Coggan's Power Profiles pre-date the publication of his book with Hunter Allen so really should be thought of as Coggan's own. ...
As others have pointed out, this is unlikely to bear any resemblance to the actual resistance at 80 rpm, but if you wanted to turn your numbers into watts, the formula would be: P[W] = F[N] * l[mm] * w[rpm] * 2 * pi / 60,000 P[W] --> Power [in Watts] F[N] --> Force [in Newtons] l[mm] --> Crank length [in mm] w[rpm] --> Cadence [in rpm] For ...
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