928mac

To continue a topic in another thread that I thought needed its own thread,
here is a good explanation of - Horsepower and Torque

Horsepower and Torque explained

danglerb

You mean horsepower isn't a division of PETA?

I can't wait to find out more, maybe they are even related? (not Horsepower and PETA, horsepower and torque)

EspritS4s

HP = Torque x RPM ÷ 5252

What else needs to be said?

Speedtoys

I thought it was pretty simple..

Horsepower is how HARD you hit the K-wall.
Torque is how far you MOVE the K-wall.
Oversteer is when the REAR of the car hits the K-wall.
Understeer is when the FRONT of the car hits the K-wall.

928mac

ROTFLMAO

86'928S MeteorGrey

GlenL

no, no, maybe, maybe.

SeanR

You must be new here.

This is not going to go well. I can tell already.

mark kibort

I like it!

Mk

acceleration = power/(mass x velocity)
acceleration is directly proportioal to power. Power available at any speed, will dictate rear wheel torque. ( Net accelerative forces)

Mike B

I think these comparisons pretty much sum it up...

Horsepower is for show, Torque is for go...or
Horsepower sell cars, Torque wins races.

Bill51sdr

Oh hell, now you've done it...

Mike B

Let the fireworks begin!

mark kibort

,

Hp DETERMINES what the rear wheel torque will be. If you have more power, you will have MORE torque to accelerate. . I think that sums it up.

Post NO more if you cant find a situation where that is not an absolute truth.
At any speed, if you have more power, you have more torque at the rear wheels, but if you have more engine torque at any same vehicle speed, it means nothing, useless!

EspritS4s

Power= Torque * Angular Velocity
Power is directly proportional to torque
Acceleration = Force/Mass where force= the vector sum of all forces (engine torque converted to a linear force through the car's drivetrain, rolling resistance, airflow resistance)

Power is merely the time derivative of work where work=force * distance (or object displacement)

Power is not an independent variable in these equations, but force (torque) is.

EspritS4s

Torque (and engine speed) determine what the HP will be. This torque will be converted by the drivetrain into a different torque at the axles. Torque can be multiplied or divided. Higher horsepower at the same torque level merely means the engine is rotating faster, which allows applying this torque at higher axle rotational speeds.