[Michael1]

Originally Posted by PARAGON

Where did you hear that? From a horse?

Ok, sport. Here's a little lesson for ya'

Torque is tangential force TIMES the distance from the fulcrum or a measure of force at a single moment in time. HorsePower can be defined as work (force over distance) per unit time.

Applying 1 lb of force 1 ft from the fulcrum for a complete revolution will lead to;
W = F*2*Pi*r = 1 lb * 2*Pi * 1 ft = 2*Pi lb-ft = 6.283 lb-ft

If it takes one minute to complete this revolution, then the power is;
P = W / time = 6.283 lb-ft/min
1 HP is defined as 550 lb-ft/s or 33,000 lb-ft/min

Therefore, applying 1 lb-ft of torque in one minute (1 rpm) = [6.283 lb-ft/min] / [33,000 lb-ft/min] = 1/5252 of 1 hp.
From this you can then calculate the number of hp from any given torque and rpm:
HP = Torque * RPM/5252 or
HP = Torque measured over time and distance.

Therefore, HP is a measurement of Torque over a given time and given distance.

First off, I don't need your lesson.

Second, that's not what you said. You said it was a "measure of torque", not a "measure of torque over time". You've just proven my point that horsepower is a measure of power, not a torque measurement. If horsepower was purely a measure of torque, then how is it that 1 horsepower = 745 watts? Just because torque is one variable in the equation of horsepower, doesn't mean it's a measure of torque. That's like saying wattage is a measure of volts.

Michael