On Fri, 17 Mar 2006 11:39:22 GMT, wwsjr wrote:

..


Horsepower is an extrapolation to describe output condition at a point
in time. A marketing number, hence: "horse."
Torque is a constant over time, above time. The usable number.
HP curves describe volumetric effenciency, tunable over a wide range.
A 1 cu. in. model engine can produce 5 HP. At 25,000 rpm. But not enough
torque to power a go cart.


That's what gearboxes are for :-|


Mark Rand
RTFM