KVO Engineering — E-Drive Calculator
Stacked power breakdown + lossesInputs
Results
Top speed (flat)
–km/h
Top speed (@ grade)
–km/h
DC current @ Pcont
–A
0–50 km/h
–s
Range @ cruise
–km
Wheel power @ cruise
–kW
Power vs Speed (stacked breakdown like Gribble)
Aerodynamic
Rolling
Grade (uphill)
Drivetrain loss
Applied motor power (wheel)
Ppeak × η (wheel)
KVO Engineering — Required Power & Torque Calculator
Input: speed & acceleration → Output: power, torque, rpm
Inputs
Approx. DC→wheel efficiency
May be negative (downhill)
Please enter valid numbers. All fields must be > 0 except Grade, which may be negative (−100 to +100). Efficiency must be > 0 and ≤ 100. Acceleration must be ≥ 0.
Results (at target speed)
Required wheel force
–N
Required wheel power
–kW
Required DC power
–kW
Motor torque
–Nm
Motor RPM
–rpm
Estimated DC current
–A
Breakdown @ target speed
Acceleration force (m·a)– N
Rolling resistance (m·g·Crr)– N
Grade force (m·g·sinθ ≈ m·g·grade%)– N
Aero drag (½ρCdAv²)– N