Speeeeed!

Speed is estimated based on rider power and the forces acting on a rider from wind resistance, rolling resistance, and gravity.

This form can be used to answer the following questions:

At a given power level, how does speed change as the slope gets steeper?
If Frontal Area can be reduced, how does speed change?
How does speed change as power increases?
(See Power for details on the definitions of parameters.)


Example, Speed For Given Power Speed For These Parameters 7.46 m/s
Power 250 watts
Frontal Area 0.5 m2
Coefficient Wind Drag 0.5 Dimensionless
Air Density 1.226 kg/m3
Weight Rider & Bike 75 kg
Coefficient of Rolling 0.004 Dimensionless
Slope of Hill 0.03 decimal