HV motor question

[Semi Pro]

how many poles are novaks Hv motors?

[lutach]

Originally Posted by Semi Pro

how many poles are novaks Hv motors?

Good question. I'm sure they are 2 poles mainly because of the way the magnet is. If it had more the 2 poles it would look something like a Aveox and Neu.

Good thing you started this thread because I have a question for the Novak guys as well.

What would be the Kv of a HV 1.5 and 2.5?

Reason for the question is, I'll be soon having a 200A ESC coming and I plan on using the above mentioned HV to try and set a 2S lipo speed record.

[SpEEdyBL]

Originally Posted by lutach

Good question. I'm sure they are 2 poles mainly because of the way the magnet is. If it had more the 2 poles it would look something like a Aveox and Neu.

Good thing you started this thread because I have a question for the Novak guys as well.

What would be the Kv of a HV 1.5 and 2.5?

Reason for the question is, I'll be soon having a 200A ESC coming and I plan on using the above mentioned HV to try and set a 2S lipo speed record.

Do the math. If the 4.5 is 5000 kv a 2.5 would theoretically be 4.5/2.5 x 5000 = 9000kv and a 1.5 would be 4.5/1.5 x 5000 = 15000 kv, but in reality, I would guess more like 8000 and 12000 since it would be hard to fit all that wire in the stator with less turns to work with.

[lutach]

Originally Posted by SpEEdyBL

Do the math. If the 4.5 is 5000 kv a 2.5 would theoretically be 4.5/2.5 x 5000 = 9000kv and a 1.5 would be 4.5/1.5 x 5000 = 15000 kv, but in reality, I would guess more like 8000 and 12000 since it would be hard to fit all that wire in the stator with less turns to work with.

You might be right, but I was hoping the Novak guys would give their answer. I'm actually going to send it to a guy to have it done and I'm going to get a 200A ESC soon to try it out. It should be fun .

[NovakTwo]

I can check with the engineers, but I'm not sure we have ever been interested in those low wind HV motors. So, no reason to wind, test and measure 1.5s or 2.5s.

Like I have said, I don't have the qualifications to answer tech questions. Speedy's Kv estimates are probably as good as any others. I'll check on the number of poles.

If you are putting an HV 4400 in a "new" E-Maxx, you need to install the 5mm shaft rotor.

[Semi Pro]

thanks Lutach

i have a spair hv 4400 that i want to put into an e-max for a freind, i have a bk that i wanted to use on it if i could

[NovakTwo]

Originally Posted by Semi Pro

how many poles are novaks Hv motors?

Our motors are 3 pole motors.

[lutach]

Originally Posted by NovakTwo

Our motors are 3 pole motors.

Wow. 3 pole. Incredible. You probably meant 3 phase 2 pole. Your magnet design can only support 2 pole (2 poles are N-S and 4 poles uses 4 magnets N-S-N-S). If your rotor was 4 pole than it would look like a Aveox, Neu, Plettenberg and Medusa and your motor would have more stators to make it work properly. This is just an awesome answer from someone who works at Novak. Please have Bob or someone else provide the correct answer.

[TexasSP]

How exactly does that work? The poles have to be even numbers. You only have north/south in multiples of 2 for a magnet. So for every north you have to have a south and vise versa. IE: a four pole motor goes north/south/north/south

If a motor were three pole it would go north/south/north and would stop turning after the second north. Are you sure you are not confusing poles with phases?

[BrianG]

New technology apparently.

[SpEEdyBL]

I believe he meant that Novaks have 3 slot "stators" and 2 pole magnets.

[snellemin]

You guys are brutal.

[lutach]

Originally Posted by snellemin

You guys are brutal.

Brutal was the guys when I first posted about my ESCs without any pictures. Man they didn't let a poor guy like me get away with it . NovakTwo knows we mean well .

[NovakTwo]

Don't shoot the messenger!

After serious conferencing (ahem), I have learned that I "mis-typed".

Our motors are actually 2 pole, 3 slots.

As those of you who "know things" have already pointed out....

[lutach]

Originally Posted by NovakTwo

Don't shoot the messenger!

After serious conferencing (ahem), I have learned that I "mis-typed".

Our motors are actually 2 pole, 3 slots.

As those of you who "know things" have already pointed out....

Alright . NovakTwo, if I send you my burnt HV4.5 motor, can you ask your motor winder guy to make it a 1.5T? I have a 200A ESC coming soon and I want to use your motor to set a speed record for 2S lipos. I really don't want to send my motor to France to get it done.