Horsepower/Weight Conversion

[TxShepS4]

Does anyone know the horsepower/weight conversion for the S$? For example, dropping X pounds from the car's weight adds appx. X in horsepower.

[Miguel]

I thought it was more time/weight.

as in drop .1 with 100lbs.

[aussie_s4]

Originally posted by Miguel
I thought it was more time/weight.That's right. HP is the rate of doing work, or a measure of power required to push weight over a time period. The calculation uses time directly, or (indirectly) using mph and distance.

Dropping weight doesn't increase horsepower, it just reduces the time taken to push the weight a certain distance.

You could argue that "dropping X pounds from the car's weight" results in the same time reduction that you would achieve by "adding Y in horsepower without reducing weight"

Here's a calculator (http://www.speedworldmotorplex.com/calc.htm) to play with (caution: it's for RWD calculations)

[TxShepS4]

Agreed. But there was some kind of quazzi formula where people said dropping 10lbs in the car equates to a gain of say 2 horsepower (I know inherent in that are various assumptions based on speed/time/weight etc.)