I'm trying to choose a motor to build a long(ish)-endurance quadcopter. I will be using the RCTimer x650 frame to lift a go-pro and small brushless gimbal. I want to use 2x 4000mah 4s packs for a total of 8000mah 4s
Can some one experienced in brush-less motor design help me understand the differences between these 2 motors? The weight of the motors is very close, The main difference I can see is the 3508 motor has 14 poles, while the 4108 motor has 24 poles. I'm not sure what this means in terms of efficiency though. In the charts posted, the 3508 motor uses slightly less current, but aso has slightly less g/w effeciency compared to the 4108 motor
Thanks for any help!