Definitions of HP and Torque

frisbee

GODSPEED RACING
Donating Member
Registered
I read this and thought some of you might like to know this!


Horsepower:
The common measurement of an engine's output. By pure definition, one horsepower is the power needed to lift 550 foot-pounds one foot off the ground in exactly one second. In simpler terms, horsepower is one figure to consider for mid- and upper-range engine response. There's no magic number for ideal horsepower, as other variables like engine torque, vehicle weight, aerodynamics, and gearing all play supporting roles in the bike's overall performance.



Torque:
The rotational equivalent to force measured in pound-feet. Pound-feet isn't some kind of tortuous fetish; one pound-foot equals the twisting force produced when a one-pound force is applied at the end of a one-foot-long lever. You'll see the pound-feet measurement of torque touted with horsepower, even though horsepower often gets all the credit for an engine's performance. Remember, though, low- and mid-range response is where torque plays a big role.


It all boils down to HP + Torque  = a Hayabusa!!!!
race.gif
 
super.gif
 
Abreviated version:

Torque is what gets you moving. Horsepower is what makes you go fast.

beerchug.gif
 
Those are some nice definitions. However, dynos only measure torque. The HP numbers produced are calculated based on the measured torque.

HP = (torque X rpm) / 5252

So to increase your HP number, all you need to do is raise your redline.
 
(frisbee @ May 16 2007,11:25) I read this and thought some of you might like to know this!


In simpler terms, horsepower is one figure to consider for mid- and upper-range engine response. There's no magic number for ideal horsepower, as other variables like engine torque, vehicle weight, aerodynamics, and gearing all play supporting roles in the bike's overall performance.



Torque:
The rotational equivalent to force measured in pound-feet. Pound-feet isn't some kind of tortuous fetish; one pound-foot equals the twisting force produced when a one-pound force is applied at the end of a one-foot-long lever. You'll see the pound-feet measurement of torque touted with horsepower, even though horsepower often gets all the credit for an engine's performance. Remember, though, low- and mid-range response is where torque plays a big role.


It all boils down to HP + Torque = a Hayabusa!!!!
race.gif
super.gif
"Horsepower:
The common measurement of an engine's output. By pure definition, one horsepower is the power needed to lift 550 foot-pounds one foot off the ground in exactly one second."

Isn't that a typo, corrected version-

"Horsepower:
The common measurement of an engine's output. By pure definition, one horsepower is the power needed to lift 550 pounds one foot off the ground in exactly one second."
 
Hp is the value assigned to the speed at which you hit the wall,
Tq is the value assigned to the distance you carry the wall with you!
wow.gif


super.gif
 
Back
Top