Question about Neu motors - RC-Monster Forums

lincpimp · 02.15.2009, 10:03 PM

Eyeball this, plett motor internals:

The white wrap on the right side leads me to belive this motor is a star wind, which is delta, IIRC. So a wye wind would have those 3 wires seperated and attached to the main windings that exit the can?

I may have the wind types mixed up, but am I anywhere correct with the rewiring?

sikeston34m · 02.15.2009, 10:09 PM

Quote:

Originally Posted by lincpimp

Eyeball this, plett motor internals:

The white wrap on the right side leads me to belive this motor is a star wind, which is delta, IIRC. So a wye wind would have those 3 wires seperated and attached to the main windings that exit the can?

I may have the wind types mixed up, but am I anywhere correct with the rewiring?

Under the white wrap, there are 3 wires connected to each other, right?

That's a wye termination on a wave wind I believe.

Without changing the wind, if you were to sort those out so they match their respective phases, you would increase the kv by 1.73 times.

If that is currently 3000kv, I don't think this would be a good idea without changing the wind entirely.

A Delta wind is fine in the correct configuration, but I'm not sure how well it would work with only 1 turn.

I turned to the Power Croco site which gives MANY different configuration for many pole counts, but they are all outrunner motors.

We need to know the configurations of the factory Neu winds. They can be changed in various ways to produce different results.

sikeston34m · 02.15.2009, 10:11 PM

I may be off somewhat on the previous post.

I don't have a good understanding of the wave wind yet.

It only uses 1 wire composed of many different strands aka 1 turn.

lincpimp · 02.15.2009, 10:16 PM

My main question is can I rewire a neu 2y to a neu 2d...

sikeston34m · 02.15.2009, 10:22 PM

Quote:

Originally Posted by lincpimp

My main question is can I rewire a neu 2y to a neu 2d...

This 12 tooth field isn't a 2Y winding. It's wave wound.

Do you have an example of a Neu 2y handy?

Sorry for being so difficult, but I believe the 2y will be a different configuration altogether.

To answer your question, I'm sure it would be hard.

Usually the winding for Delta is continued on both sets out to the main leads. Some manufacturers like Medusa choose the make the leads out of the winding wire itself. (It's why Medusa leads are so stiff)

If you were going to simply change from wye to Delta without rewinding the entire thing, when you separate the wye termination point, the leads will be too short.

It can be changed, but you have to rewind the whole thing.

sikeston34m · 02.15.2009, 10:48 PM

http://www.rc-monster.com/forum/show...t=15900&page=2

page 2 of this thread shows 2 different Neu motors. They are both wye wound.

The one on the left is a 1515, the one on the right is a 1512.

Evidently, with the 1515, they were just about out of room inside the can to complete the wind. So they epoxied, compressed and baked the winding to retain that shape.

These are both Wye wound. See the white collar covering the termination point?

A Delta wind won't have this.

lincpimp · 02.15.2009, 11:17 PM

Quote:

Originally Posted by sikeston34m

http://www.rc-monster.com/forum/show...t=15900&page=2

page 2 of this thread shows 2 different Neu motors. They are both wye wound.

The one on the left is a 1515, the one on the right is a 1512.

Evidently, with the 1515, they were just about out of room inside the can to complete the wind. So they epoxied, compressed and baked the winding to retain that shape.

These are both Wye wound. See the white collar covering the termination point?

A Delta wind won't have this.

So do you think either of those could be changed to a delta termination? Of would it be too difficult? Looking at how the windings are compressed it looks like a difficult job???

sikeston34m · 10:18 PM

Quote:

Originally Posted by lincpimp

Eyeball this, plett motor internals:

The white wrap on the right side leads me to belive this motor is a star wind, which is delta, IIRC. So a wye wind would have those 3 wires seperated and attached to the main windings that exit the can?

I may have the wind types mixed up, but am I anywhere correct with the rewiring?

See how each winding jumps over three stator poles?

I believe with this configuration, it is magnetizing all three teeth to create one magnetic pole X4.

When the ESC shifts to the next phase, it jumps one tooth with the NSNS magnetic polarity.

It is a 4 pole armature? correct?