Enough said.

[emaxxnitro]

not if you are running high voltage! 2poles can take high voltage better than 4poles. Now 4 poles are better for 6s and under 2poles are going to have higher rpm

[brushlessboy16]

Originally Posted by emaxxnitro

not if you are running high voltage! 2poles can take high voltage better than 4poles. Now 4 poles are better for 6s and under 2poles are going to have higher rpm

rpms causes destruction.. 4 and 6 pole motors make more torque and turn lower rpm. keeping them in below failure point, the added torque allows you to gear to compensate...

He is right multipole motors are better..at high voltage

[emaxxnitro]

Originally Posted by brushlessboy16

rpms causes destruction.. 4 and 6 pole motors make more torque and turn lower rpm. keeping them in below failure point, the added torque allows you to gear to compensate...

He is right multipole motors are better..at high voltage

not if your motor is rated for it! the c50 comp is a 80000 rpm motor. and the 9xl can take up to 8s (my future bl plans)

[Pdelcast]

Originally Posted by emaxxnitro

not if you are running high voltage! 2poles can take high voltage better than 4poles. Now 4 poles are better for 6s and under 2poles are going to have higher rpm

I don't know how you can say this. And I have to disagree with you on this as well.

Usually, pole count is determined by rotor diameter, not by voltage. Voltage doesn't really enter into the equations at all -- you can always change windings to make up for pole count difference (for example, a 2 turn 2 pole is the same torque as a 1 turn 4 pole...)

[lutach]

Originally Posted by Pdelcast

I don't know how you can say this. And I have to disagree with you on this as well.

Usually, pole count is determined by rotor diameter, not by voltage. Voltage doesn't really enter into the equations at all -- you can always change windings to make up for pole count difference (for example, a 2 turn 2 pole is the same torque as a 1 turn 4 pole...)

I also think the 4 pole mentioned by Patrick will still have more torque being it has twice the magnet. Basically a 2 pole would be a 4 cylinder and a 4 pole would be 6 cylinder and 8 pole well would be 8 cylinder. Ever wonder why outrunners have more torque then our popular 4 pole inrunners?

[MetalMan]

Originally Posted by lutach

Ever wonder why outrunners have more torque then our popular 4 pole inrunners?

kt and kv are inversely proportional, so when kv decreases kt increases.

[lincpimp]

We need sensored outrunners! I want CC to make a killer brushless crawler setup with a sensored outrunner and an matching esc with a built in switching bec that can handle 4s lipo. Had to throw that in, since it seems like Patrick is watching...

[Unsullied_Spy]

Originally Posted by lincpimp

We need sensored outrunners! I want CC to make a killer brushless crawler setup with a sensored outrunner and an matching esc with a built in switching bec that can handle 4s lipo. Had to throw that in, since it seems like Patrick is watching...

CC won't build a sensored ESC or motor though, Patrick has said that a few times. It would make for an awesome crawler, but someone else will have to do it

[Maciolus]

I think Holmes Hobbies is preparing sensored outrunner for sale right now.

[brushlessboy16]

Originally Posted by Unsullied_Spy

CC won't build a sensored ESC or motor though, Patrick has said that a few times. It would make for an awesome crawler, but someone else will have to do it

yes, his qoute was something to effect of
"we wont build a sensored motor because they are based on an inferior design" IIRC

[Arct1k]

Originally Posted by Unsullied_Spy

CC won't build a sensored ESC or motor though, Patrick has said that a few times. It would make for an awesome crawler, but someone else will have to do it

IIRC Patrick then said he was actually building a sensored controller as the market still wanted one...

[lutach]

Originally Posted by lincpimp

We need sensored outrunners! I want CC to make a killer brushless crawler setup with a sensored outrunner and an matching esc with a built in switching bec that can handle 4s lipo. Had to throw that in, since it seems like Patrick is watching...

I spoke with a few companies that might make me some 4 or 6 pole inrunners with sensors. Only time will tell though.

[lutach]

Originally Posted by MetalMan

kt and kv are inversely proportional, so when kv decreases kt increases.

Yes, but a 4 or 6 pole motor will have a higher Kt than a similar 2 pole with the same Kv.

[sikeston34m]

Originally Posted by lutach

I also think the 4 pole mentioned by Patrick will still have more torque being it has twice the magnet. Basically a 2 pole would be a 4 cylinder and a 4 pole would be 6 cylinder and 8 pole well would be 8 cylinder. Ever wonder why outrunners have more torque then our popular 4 pole inrunners?

Did someone say outrunner? LOL

I for one can testify to the torque of the outrunner. In the experimental direct drive setups that I have built, a 12 pole outrunner with a low (600kv to 1000kv) has enough torque to shatter diffs and even bearings. I'm talking acceleration, not shock from jumping. They can also easily pull gearing that 2 pole motors will smoke over.

When considering torque, think about how many rotational degrees each phase shift is required to turn the armature, often times with close to the same amount of magnetic strength as a 2 pole.

Armature Diameter has a huge impact on torque. It's just a matter of leverage or distance from the magnetic force to the rotational center.

[brushlessboy16]

Originally Posted by sikeston34m

Did someone say outrunner? LOL

I for one can testify to the torque of the outrunner. In the experimental direct drive setups that I have built, a 12 pole outrunner with a low (600kv to 1000kv) has enough torque to shatter diffs and even bearings. I'm talking acceleration, not shock from jumping. They can also easily pull gearing that 2 pole motors will smoke over.

When considering torque, think about how many rotational degrees each phase shift is required to turn the armature, often times with close to the same amount of magnetic strength as a 2 pole.

Armature Diameter has a huge impact on torque. It's just a matter of leverage or distance from the magnetic force to the rotational center.

I feel you pain, my old Turnigy 50-55B Would eat up diffs for lunch.

I would still like to see an addon, with adapter with a sensor pack. would definately be cool