RCET 003: MORE POWER from your Electric Motor
Al Tejera shows you how to use the magic of the power formula Watts = Volts X Amps to get more power (or more run time) from your electric motor. He discusses how changing pitch and diameter affect power and also how changes in battery voltage affects power and run-time.
Links:
A rule of thumb for power conversion of glow to electric motors is to simply multiply the engine displacement by 1000 or 2000 to get approximate watts for that size motor. Ex: 60 size engine = 0.6 cu in X 1000 = 600 Watts or 0.6 X 2000 = 1200 watts for the high end.
A simple rule of thumb for picking the proper motor power for specific size plane can be found here along with other useful ways to use a watt-meter
To save money when experimenting with motors, props and batteries two great programs you can use to play “what if” games are MotoCalc and the Scorpion Calc over at www.Innov8tiveDesigns.com
A written pdf covering both part I and II of the basics in electronics may be downloaded here.
Our Sponsor is:
Tejera Microsystems Engineering Inc. makers of the new Xtrema xG Balancing Charger and the SmartSmoker Smoke Pump
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