What does 4-pole mean ?

[huffster]

I see a new series of bl motors with 4-pole design. Not sure what this is or does to motor power ? How would it be different than my Novak 4.5 HV to drive ? Just curious if anyone can help explain.

My current motor is Novak 3525 and running a Havoc Pro esc. ---> Link Brushless Motor Spec Chart

[amagad]

it means Google

[huffster]

Originally Posted by amagad

it means Google

Wow...real helpful there, einstein !

[qZOMBIExTUNAp]

A 4 pole will have more torque than a 2 pole of the same KV

[SoupSpoon]

A 2 pole motor has 1 North and 1 South pole on the rotor.

4 pole has 2 north poles and 2 south poles on the rotor.

[huffster]

Originally Posted by qZOMBIExTUNAp

A 4 pole will have more torque than a 2 pole of the same KV

That's the kinds of info that I was looking for...Thank you Zombie Tuna !

[BlueGlowBoy]

They also tend to be more efficient, lighter (because MOST are 540 cans, rather than the heavier 550s), cooler, and smoother.... especially if you run the sensored 4-poles with a sensored ESC...

[SoupSpoon]

4 pole versus 2 pole motors

What‘s the difference?

N & S has to share 180 degree in 2-pole motor and only 90 degree in 4-pole motor, thus 4-pole motor has more balanced torque and higher power frequency, this will create advantage of power output under higher loading.

What makes a motor have speed?
2-pole motor provides better high speed performance.

What makes a motor have torque?
4-pole motor provides better torque under same Kv rating with 2-pole motor.

Slot designs versus slotless?
Slotted brushless motor can provide higher torque and brake by inducting magnetic force to rotor from stator; slotless design fits better when motor is required to rotate smoothly.

Stator – Sizes, Slots, Laminations, Wye & Delta winds, KV versus turns?
Larger the stator means more torque it can generate, however larger diameter creates longer magnet circuit and generate more torque when numbers of slot is increasing, but the key of torque is based on total unit area of magnet circuit because there will be several factors to cause the loss of torque, such as copper wires resistance, magnetic hysteresis from phase change, Foucault currents and internal resistances.

Wye and Delta winding has no distinctive difference under same Kv rating of brushless motor since they are having similar resistance and inductance. As for the relationship of Kv rating and Turns, more turns result lower Kv due to less rated current.

Hope that helps!

[S14juggalo]

Soup..........you just blew my mind sir!

[SoupSpoon]

Originally Posted by S14juggalo

Soup..........you just blew my mind sir!

If you guys have more questions let me know.

[S14juggalo]

I have a million questions. But theres only one I'm waiting for and its about a 4pole.

[SoupSpoon]

Originally Posted by S14juggalo

I have a million questions. But theres only one I'm waiting for and its about a 4pole.

This one?

[S14juggalo]

Yeah buddy that's the one! R52?

[SoupSpoon]

Originally Posted by S14juggalo

Yeah buddy that's the one! R52?

That's the one! I took it pavement diving over the weekend, woooeee!!

[S14juggalo]

Those street fighters look sick. Do i see 4s on that scte sir?

[SoupSpoon]

Originally Posted by S14juggalo

Those street fighters look sick. Do i see 4s on that scte sir?

Those things have insane traction!!! And that would be Eagle Tree it's a data logger. This is the one we use - Eagle Tree –R/C RPV RC Heli Model Aircraft Telemetry data logger GPS logger GPS telemetry MicroPower elogger e-logger RC Model Airplane Telemetry jet ECU telemetry Eagletree MicroPower Wireless Telemetry RC data logger Flight Data Recorder high

[S14juggalo]

Hey soup......new feature for proguage? Along with temp and kv reader?

[SoupSpoon]

Originally Posted by S14juggalo

Hey soup......new feature for proguage? Along with temp and kv reader?

I use it for testing new systems, see how many amps, watts and mah's the systems pull. We do it for every new product we have coming out. It gives us some visual indication to what's going on.

We talked about the temp reader and kv meter, if we can make it happen we will. We have so much good stuff planned over the next year it's hard to pick what project we get to tackle next.

[crusey_aus]

Soup,

Do you have any datalogging for the motors you have tested recently that you wish to share ?

Cheers

[bubu1.0]

Hey Soup,

Is viper developing a new esc for the 550 and new B52 motors? One that can handle the demands of heavy SC trucks. Really interested in Viper products just curious if that is in the making....