Translation required pleeeeze

[1hill@aTime]

easier method, climb onto bike and ride it, eventually you will get to said ave speed.

[Minion]

too many variables to accurately gauge the required power output we could probably nail the friction part of the equation but the other part is the tricky part, my suggestion? a letter to santa for a powermeter

You can get a good estimate of your CdA and Crr for a particular set of equipment if you've got a computer that can record and download a speed track to your PC, using the Virtual Elevation method and some coast-down tests. You could get an even better estimate if you borrowed a power meter.

 

Knowing those values and if you've got a course profile, you could make a good estimate of your power requirements for a windless day.

 

It would be difficult to estimate it while you're riding (the maths is complex), but if you got weather data and a course profile from when you did the ride, you could create a reasonable power estimate after the fact (the Sporttracks GPS2PowerTrack and Weather plugins do this). I did a quick experiment using the default values in these plugins and I get estimated power values within about 20% of my power meter. Presumably the estimate could be improved by tweaking the input values.

[Garfield2010]

Cool guys I have found the solution!!