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I'm a newbie in RC field..I am planning to construct my first Tricopter ever. Can anyone help me to find the power rating to select the motor for a tricopter?

I am at the beginning stage of construction. Arm length of frame: 50cm each. I need a thrust of about 2Kg -- nearly 666 gms for each motor.

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  • $\begingroup$ Welcome! That, surely will depend on a number of design criteria, which you haven't mentioned - weight, size, power-source etc. Could you elaborate teh question, please? $\endgroup$
    – Andrew
    Commented Aug 30, 2014 at 17:33
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    $\begingroup$ Thanks..I have added the details above. I just need the formula to calculate the power required to lift my tricopter. $\endgroup$
    – Shiv Ram
    Commented Aug 31, 2014 at 21:04

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This depends on what you want to do with your copter.

Hovering: 100-150 Watt/kg
ScaleFlight: 200-300 Watt/kg
Some chilling acrobatic flight: 350-400 Watt/kg
3D acrobatics 500+ Watt/kg
Hardcore 3D 1000 Watt/kg

Just take the real weight of your copter, calculate the total power and divide it by 3 (in your case)

I also have a source for this but i know only a German one: http://www.heli-planet.de/index.php?section=auslegung_von_e_motoren

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