Neu motors - D vs. Y winds - RC-Monster Forums

**Neu motors - D vs. Y winds -** 05.06.2007, 11:30 AM

Hey guys,

I have a 1515 2.5D coming in, but now that I think about it, it may be too much. I'm running an 8XL on 5S and it is stupid powerful. Full throttle is uncontrollable. I am now thinking that I should have gotten the 1.5Y which has a slightly lower kv rating.

I've also heard that the Y wind motors are more efficient. Is this true and if so, does it make a difference?

Is anyone one else running a 1.5Y? How do you like it? I'm going to be running mine in my Muggy conversion.

Serum · 05.06.2007, 12:44 PM

no, not neccesarely more efficient. They are wound in a different way. not meaning that both a Wye and a delta of the same KV value could be close in effiency.

I have got a 2200kv neu laying here, waiting for a 5S project.

They seem to be able to handle it quite well. the 1515 comes in a 4100kv too.. :p

05.06.2007, 01:34 PM

When I said that the 2.5D on 5S might be too much, I wasn't worried about the motor being able to handle it. I was worried about my truck being able to handle it.

The 2200kv motor on 5S is going to be insane.

GriffinRU · 05.06.2007, 07:15 PM

Efficiency wise they are pretty close to each other, Y will have copper losses while D will have core losses.

In the past (and sometimes in present) D windings were more hard on ESC to identify rotor position, nowdays electronics are much better...

05.06.2007, 08:06 PM

So, if I'm understanding this correctly, there really is no advantage of getting one over another. I'll keep the one with the kv rating that I want.

I did have one thought though. Is it possible that while the Mamba Max comtroller might have problems running a Nue motor with a D wind, it might have less trouble running a Nue motor with a Y wind.

Which is the lesser of the evils; copper losses or core losses?

GriffinRU · 08:32 PM

Quote:

Originally Posted by AAngel

So, if I'm understanding this correctly, there really is no advantage of getting one over another. I'll keep the one with the kv rating that I want.

I did have one thought though. Is it possible that while the Mamba Max comtroller might have problems running a Nue motor with a D wind, it might have less trouble running a Nue motor with a Y wind.

Which is the lesser of the evils; copper losses or core losses?

Thats a good thought...
copper vs core -> hard to say from motor side copper from generator core