What are the equations for selecting a motor for an RC plane?

[pegus]

Good day,

I am starting to design a new cargo RC plane and I end with this trouble.

I want to select a motor but I do not know the required trust.

Is there any equation or steps that I can apply to decide the motor??

Thanks!

 

[rcgldr]

There are general guidelines for how many watts per pound (or kg) a model should have, with higher ratios if the goal is aerobatic models. Then other articles will mention what type of props (diameter and pitch) would be good for the model. Example articles:

http://www.rc-airplane-world.com/watts-per-pound.html

http://www.rc-airplane-world.com/propeller-size.html

 

[mhassan215]

For best sound I can help you.

See the video listen the sound and details are as folllow

12 Blade Fan rotor 3200kV Outrunner motor
64mm Duct size
35a ESC with 3S liPo