Net horsepower

[Mikey_s]

I know this is thread creep, but on the subject of putting outrageous engines into cars, take a look at this chap...

http://www.pistonheads.com/gassing/topi ... chassis...

[jgredline]

Area under the torque curve wins races? Any takers?

Edit - and I might add the Merlin is a sweet engine!

Explain what you mean??

a broad power curve makes the car more drivable

it has more power in more places than a peaky power curve

you can get by with less gears and ussaly drive harder out of a cornner

why do you think f1 has 7 gears they make all of there power in a verry narrow area

So your saying that a race car that has power under the torque curve wins races?? Can you give an example? Perhaps a dynochart, or a race series were that theory is true. I am not being sarcastic, I just want to understand because I have heard that before and yet no one has been able to come up with an answer that makes sense.
I would agree with your statement in a ''street''car but we are talking race cars here.

[Ciro Pabón]

So your saying that a race car that has power under the torque curve wins races?? Can you give an example? Perhaps a dynochart, or a race series were that theory is true. I am not being sarcastic, I just want to understand because I have heard that before and yet no one has been able to come up with an answer that makes sense.
I would agree with your statement in a ''street''car but we are talking race cars here.

Flynfrog is totally right. That is easy. HP = Torque*rpm

The area under the curve of torque vs rpm is the integral. You could say that you are summing the area of rectangles, each one with an area equal to torque per rpm at this particular point of the curve. It should be equal to the HP delivered while the engine changes rpm while accelerates.

For example: http://vettenet.org/torquehp.html

[jgredline]

So your saying that a race car that has power under the torque curve wins races?? Can you give an example? Perhaps a dynochart, or a race series were that theory is true. I am not being sarcastic, I just want to understand because I have heard that before and yet no one has been able to come up with an answer that makes sense.
I would agree with your statement in a ''street''car but we are talking race cars here.

Flynfrog is totally right. That is easy. HP = Torque*rpm

The area under the curve of torque vs rpm is the integral. You could say that you are summing the area of rectangles, each one with an area equal to torque per rpm at this particular point of the curve. It should be equal to the HP delivered while the engine changes rpm while accelerates.

For example: http://vettenet.org/torquehp.html

Ciro
That is what I said a page or so ago. Hp is the result of torque. Its very simple math. If you increase torque at 19600RPM by even as little a. .1 the Hp will also increase. This is not Hp under the curve. Its well past the curve. In a street car Hp under the torque curve is king, but not in a race car. Maybe I misunderstood what your saying?