Need help with a brushless motor

[Gagac221]

Hello guys,

Since I am a complete beginner in the RC world, I am looking for your help.
My question is not completely related to RC, but I said to myself that I will try my luck here on this forum.
Basically what I am looking to make is a tennis ball machine/robot. Here is what I have in mind: www.youtube.com/watch?v=tTuYr_e3Pzs
As you can see in this video dc brushed motors model 775 are used. What I am trying to do is the same ball machine, but with brushless motors.
This is where I need your help guys.
What would be a good brushless motor (alternative) for this kind of application? - I would still like to drive 2 125mm wheels on 1 shaft...
I am looking for a brushless motor that would have a good ratio between power/speed and battery consumption.
What would be your suggestions?

Thank you for all your answers!

[Zoea]

What are you doing for gearing and what is your budget? You may find you are happy with a 4 pole 1/8 style motor and speed controller but it really depends on the design of you machine. I don't see a problem with a motor of that size and strength chucking tennis balls at you.

 

It might be overkill though - you might be ok with a cheap 9t 1/10 combo from ebay and that would certainly be cheaper. Maybe try that first. This is a difficult question to answer without knowing the gearing and design of the machine.

[Gagac221]

Basically I was looking for brushless motors used in quadcopters. 

This is the motor I was looking for: https://www.banggood.com/Racerstar-AirA-2508-1200KV-4-6S-Brushless-Motor-for-Long-Range-X-Class-RC-Drone-FPV-Racing-MultiRotors-p-1454072.html?rmmds=search&cur_warehouse=CN

 

what do you think about it?