Skagit RC Club Tools Page

Motor Calculator

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%