Torque vs. HP Revisted

[olddog]

Originally Posted by AL427SBF

Sort of gets back to the original proposition, maybe were talking past each other. Don't need to build for 600+ HP, need to build for the broadest torque curve the motor will support, HP will fall in-place as a derived result.

Since you now define road course use, build for HP. You only leave from rest once there.

Actually, anytime I want to accelerate I will be calling on torque, all gears over a broad RPM range. Ohm's law analogy ...

V=RI
Torque = Current (I)
HP = Volts (V)
Motor Efficiency = Resistance (R)

High Voltage without Current, will power nothing
High Resistance without Current, will power nothing
High Current, regardless of Voltage or Resistance, will kill your ass

In electricity:
Watts is the measurement of work where 746 Watts = 1 Hp
Watts = Voltage * Current

Voltage can be thought of as the pressure that pushes current through a resistance. It takes 1 volt to push 1 ampere of current through 1 ohm of resistance -- Ohms law.

Resistance should not be thought of as being equivalent to efficiency.

The above is true for Direct Current (DC). AC gets more complicated as power factor comes into play.