Mr Helmholz - simple model

[Bill Bradley]

> > I don't know, but don't hp and torque curves always
> > cross at 5252 RPM?  How would that work on any engine
> > that has a peak HP over 5252 RPM?
> 
> Yes they do... Just means that as the Torque and HP cross at 5252, the HP is
> rising and the torque is falling.
> they don't stay the same above 5252.
	
	Wrong.  The torque curve could very easily be rising,
HP=torque(lb*ft)*rpm/5252.  They always cross there.

	As far as the Max torque vs. Max Hp issue.  Torque =Force x radius
so the maximum force accelerating the car is directly proportional to the 
maximum torque.
	Power=Work/time, but it also equals Force*velocity, so the maximum
force at any given speed is at maximum horsepower (the gearing is irrelevant)
	So for maximum acceleration you want the revs to be at peak hp. For
those of us with normal transmissions, the usable power curve is more 
important than peak, which is where the maximum torque is a factor.

	Bill