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Electric Motor calculator

Battery and Motor data obtained from Motocalc and used with permission.
For more information on Motocalc, please visit www.motocalc.com

Battery
Cell Type
Number of cells
 
Cell Capacity
mAh
Cell Resistance
ohms
Cell Weight
oz
V per cell
volts
Pack Weight
oz
Pack Voltage
v
Speed Controller
Speed Controller Resistance
ohms
Motor
Motor
Kv
rpm/V
Kt
InOz/A
Rm
Io
A
Recommended Max Current
A
Weight
oz
Gearbox / Prop
Gear Ratio
Prop Type
Prop Const
Prop Diameter
inches
Prop Pitch
inches
Prop Blades
Motor Results
Motor Amps
A
Volts to motor
V
Motor RPM
rpm
Watts In
W
Watts Out
W
Efficiency
%
Motor Max Efficiency
Current @ Max Eff
A
Volts to motor @ Max Eff
V
Watts In @ Max Eff
W
Watts Out @ Max Eff
W
Max Eff
%
Prop Results
Eff Diameter
inches
Prop RPM
rpm
Static Thrust
oz
In-flight Thrust
oz
Pitchspeed
mph
Full-throttle duration
minutes
Approx Power System Weight
oz. Batteries + Motor + 10%