Less weight going up a slope means
faster times. How much faster?
Suppose one is considering buying a new, light-weight frame
or going on a diet. What is the benefit from having less weight? How much
time would be saved over a given distance on a specified slope? How much
more distance would be covered in a given time?
Two riders, identical except that one has less weight than
the other, ride a given distance up a hill. The the calculation gives the
distance and time between the riders as the lightest rider reaches the given
The plot shows the benefit from less weight when riding
up a hill. The range of the plot is from -10% to +10% grade and from 0 to
5 kg less weight. The table gives specific values for the given speed.
Note that large changes may produce mathematical results,
but may not have real-world meaning. Keep changes small.
"Negative values for improvements" show that
weight is an advantage going down a hill. The plot shows that weight
is more of a penalty going up hill than an advantage going down.
Benefit From Less Weight
|This Much Less Weight
|Over This Distance
|On Hill of Slope
|Coefficient Wind Drag
|Weight Rider & Bike
|Coefficient of Rolling