08-05-2017, 01:34 PM
(08-05-2017, 12:58 PM)postoak_imp Wrote: Torque is the rotational analogue of force, if I remember my physics correctly. That means it is what causes rotational acceleration. But torque is achieved from horsepower and gearing. Horsepower is more fundamental.
But an engine with smaller drivetrain mass could have better acceleration than one with larger, even though it has less torque than the larger bike.
You are misinformed my son.
Torque is the force that is generated in the engine by the connecting rods turning the crankshaft. Horsepower is calculated by multiplying torque and rpm/5252. This is why they ALWAYS cross paths at that rpm on a dyno graph and why hp will always rise as RPM increases even if torque remains constant.
If you have ever seen a graph where they don't cross there, then whomever made it created it not knowing how things work.
Horsepower is a term that was coined so that laymen could understand how much work a machine could do when replacing a horse. "This tractor can do the work of 8 horses!!!"
As a side note....did you know that a horse actually produces about 4 horsepower? Go figure.