brushless motor 2 pole 4 pole whats the difference?

[Joe Raimondi]

Can some one tell me whats the difference between a 2 pole and a 4 pole brushless motor i just bought a leopard 3674 2 pole motor and going to put it in a delta force 29 mono

 

[MarkTanski]

If I remember right a 2 pole motor has 2 magnetic poles and 4 stator windings, double that for a 4 pole motor.

A 2 pole motor is less efficient than a 4 pole and tend to run a little hotter, nothing wrong with them but you will not be able to swing equal sized props for the same results even if the KV were the same. The 2 pole motor would run hotter and be drawing more current.

Been a lot of years since college, hope I got that right.

2 pole motors are also a little more sensitive to motor timing, usually they run a lower timing than most 4 pole motors and way less than most outrunners.

Should rip pretty good in a DF29, nice hull, I've been flip flopping between an Aeromarine Titan 29 and a DF29, The Titan is a better rough water boat, but for what I want to run in it I may be better off with the higher lift hull of the DF. It'll be running a spec Proboat 1800kv motor.

 

[Joe Raimondi]

Thanks for the help

 

[jeepers]

here is what Neu motors says about their motors

" The 11,14,15,22 series motors all have 12 slot stators and 4 pole rotors."

" The 12 series motors have 24 slot stators and 26 magnet poles."

" The 19and 17 series motors all have 24 slot stators and 8 pole rotors."

" The 44 series motors are 36 slot stators and 12 pole magnet rotors."

here is a bit of reading on a dc brushless motors.

http://www.allaboutcircuits.com/vol_2/chpt_13/6.html

 

[Joe Raimondi]

thank you

 

[hugh hargett]

Dont know if its been said but a higher pole motor typically makes more torque as there are more magnetic events per revolution

 

[hugh hargett]

If I remember right a 2 pole motor has 2 magnetic poles and 4 stator windings, double that for a 4 pole motor.

A 2 pole motor is less efficient than a 4 pole and tend to run a little hotter, nothing wrong with them but you will not be able to swing equal sized props for the same results even if the KV were the same. The 2 pole motor would run hotter and be drawing more current.

Been a lot of years since college, hope I got that right.

2 pole motors are also a little more sensitive to motor timing, usually they run a lower timing than most 4 pole motors and way less than most outrunners.

Should rip pretty good in a DF29, nice hull, I've been flip flopping between an Aeromarine Titan 29 and a DF29, The Titan is a better rough water boat, but for what I want to run in it I may be better off with the higher lift hull of the DF. It'll be running a spec Proboat 1800kv motor.

The larger the angle the less timing required in a revolution ex: 2 pole 180 degress 4 pole 90 degrees 6 pole60 degrees like that so on and so on. When the timing is not right the efficiency goes down and you introduce more heat. Upping the switching pwm of the esc heats it up the esc as well. Higher switching speed yields smoother motor response and more heat on the esc YOU have to decide whats the right mix for you but If you dont do it right FIRE!. Some esc's are not at all forgiving when the timing is set wrong. I suggest auto timing for those who are unfamiliar. Note high end esc's like the hv mgm models dont have an auto timing feature neither do the big ettys. Burning up a 700 to 900 dollar esc coz you set the timing wrong is unreal and mgm will deem it as user error. A NON WARRANTY REPAIR $$$$$$$$$ WOOOOOOO WEEEEEEE.