Dave,
Yeah, well, nobody is right all the time.
And you never truly understand anything if
you can't describe it with math.
You might find this interesting:
Place a car with 12" tire radius in wind tunnel
Put a torque wrench on the rear stub axle.
Run the wind tunnel at 150 MPH
Stop car from being moved with the torque wrench.
182 ft-lbs thru a 12" radius is seen on the wrench.
0 RPM
HP=torque X RPM/5252
HP=0 since RPM is Zero.
This implies that for any instant in time, no HP (just force) is required to
overcome drag.
But start the motor, disconnect the wrench, and drive it at 150 MPH out the
door...
RPM=2100 at axle,
Torque= 182 ft-lbs.
HP=70.87
Here is a site that has a reasonable tutorial on choosing HP over torque for
acceleration.
He even has some software he wrote to choose the most effective shift
points.
http://www.allpar.com/eek/hp-vs-torque.html
Then , there is this one from a real "Torque" lover:
http://g-speed.com/pbh/torque-and-hp.html
Read at your own risk of getting twisted around the axle :->!
Chuck
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