[Dave-ROR]

Originally Posted by JoeBoxer

The screen says flywheel but that is at the wheels, i'm pretty sure Crawford's dyno says the same thing i don't know why it is confusing.

That's even worse. That means the graph is a lie.

It mathmatically does NOT work. If you know the RPM and either HP or TQ you can mathmatically determine the other, and the numbers DO NOT work in the posted graph.

Example, if we have torque and RPM, we determine horsepower by: HP=TQ*RPM/5252. If we have HP and RPM, we determine torque by: TQ=5252*HP/RPM

So, if we use the spot they have a cursor on around 3225rpm, they show basically 254lbft of torque and approx 137-138hp, but lets call it 140.

If we do the math...

HP=254*3225/5252
HP=156HP

TQ=5252*140/3225
TQ=228lbft

So if we use EITHER of their provided numbers at a set RPM, it simply DOES NOT work. You can pick any RPM, I did so with a few and the results were always the same - the graph doesn't make sense if both are wheel numbers.

So take you pick, both are wheel and the graph is a lie or one is calculated somehow. Both can't be wheel and accurate. Unless the Dynopack changes the fundamental definition of the relationship between HP and TQ of course.