[Calum]

Originally Posted by Sportsguy83

I see it this way (I'm in no way disagreeing with you, just trying to simplify it).

Torque is the measure of force and I understand why some people say that's the only thing they care about. NOW, looking at horsepower and understanding its meaning you can deduct what is torque doing given any RPM range. If you see HP curve flattening out, that's out good, you are loosing torque. If you see H curve rapidly increasing, that is good most probably your torque is increasing. If HP curve is increasing, but not at a big rate, most probably your torque flattened out which is not bad as long as it is a healthy number.

So even though Torque is the most important number, you can get a good idea of what torque is like if you have a curve.

Disclaimer: Of course none of this works with just the peak HP, but it is no good either if you only have peak TQ, you need to see the curve to be able to tell how good does a system perform.

I think I understood what you wrote. If I understood correctly you've got it. You can calculate either curve from the other. Horsepower and torque is always be the same number at 5252 rpm, torque will always be high then horsepower below 5252 rpm, and torque will always be lower then horsepower above 5252 rpm