Convert from delta to wye motor. help.

[rs4race]

I want to convert from delta to wye. I have disassembled the motor most of the way and wound up with what you see in the pictures. So two wires each pole, six wires going to the three motor leads. I can see that each poles pair of wires are on opposite side of the motor (180deg from eachother). Now to convert to wye I just need to cut one wire from each pole and connect all three cut wires together. (Preferably equal length) the problem I have is that I'm not sure which wires to cut!

If anyone has a method I can use without unwinding the motor, or without cutting all 6 wires that would be pretty cool. Thanks in advance!

 

[rs4race]

Ok so I made some progress in the last little bit. I found this image and identified e1 e2 e3 s1 s2 s3 by geometry.

so I know which three go together either as to the esc or to be combined. And then I found this image of a 14 pole motor.

This leads me to believe the polarity doesn't matter and that I could do either of the following:

1. e1 e2 e3 together and send s1 s2 s3 separate to esc.
2. s1 s2 s3 together and send e1 e2 e3 separate to esc.

Does anyone have knowledge contradictory to this? I think I just found the easy button to convert to WYE.

 

[Hummina Shadeeba]

Are u going to push the stator back in the bearing seat and how did u get it off?
I want to do the same thing but haven't gotten enough info to feel
Safe
Enough to try.
Tell me how it goes and which group of three u bundle. How are u going I get the laquer off and connect them?

 

[rs4race]

I havent decided which to connect but i know which three are a group going together or to motor terminals. I have scraped wires to remove coating before but will probably just cut solder and insulate the joint.

From what i can tell the polarity chosen should only effect the timing for sensored use and shouldnt affect it if running sensorless. I dont really have a difinitive answer but rather from observation of different diagrams and illustrations.

The stator will go back on for sure. It was pretty easy to remove. At the base of the motor shaft there is a clip to remove. Slide the can off and then there is another clip and pin to remove and you pull off the stator. I used a couple of plastic pry tools and was careful of the windings. They can dent easy and possibly create a short.

Im still trying to find an answer to what polarity to choose.

 

[Tigerpolis]

What motor is this?

 

[rs4race]

Sk3 5045 450kv

 

[Hummina Shadeeba]

I see a little gap on the tube inside the stator, is that what u mean by a clip holding it on? Only other times I've seen someone remove the stator from the bearing housing they had to press it out. I can't imagine it'd too easy to remove or else the motor would come apart under torque.
I've gotten the can off and don't see any clips on the stator. I do have that nook though

 

[Hummina Shadeeba]

Tell me if got it right when I say: you split the motor leads each into two, finding where each of those two comes from. Do that for all three motor wires. Take the three on either end(I think this is your question) solder them together and then the other three are now thinner and they will be the motor wires. ?

Getting the stator off the bearing seat though I don't know. I'm tempted to try to push it off while bracing on the tips of te poles. There's not much room there.

 

[Hummina Shadeeba]

Ok I've looked at those pics enough to convert it for sure but can't get the stator off the bearing seat!!!!

!!!!
How'd u do it?!

 

[rs4race]

There are some c clips to keep it from sliding off and a pin to keep it from rotating. I will snap some pics when I get home.

 

[Tigerpolis]

Sk3 5045 450kv

Thanks! I managed to disassemble my 6354

 

[Hummina Shadeeba]

It looks like a pin between the stator n bearing tube but i can't think how that would come out as it seems there's nowhere to push it through to. No more c-clips though I'm pretty sure.

 

[rs4race]

Sorry I forgot the pics. The pin pulls out about 1/2" long. I used needle nose pliers. There should be clips on the 5045. I'm not sure about the others.

 

[Hummina Shadeeba]

It was just pressed and glued in. I ended up drilling it out. Now I'm looking for a new bearing tube for 60mm can. And the retermination isn't going well and I'm thinking going to have to rewind. The motor leads are deeply submerged beneath other coils and I can't move them
Enough to figure anything out

Rs4race how hard was it to break the 3 into 6? As I've been saying I can't see where to decide and I can't move anything

 

[Hummina Shadeeba]

Couldn't I use the electronic stethoscope?!find the start and end of each strand?

 

[rs4race]

I just cut back the insukation on the wires. It appears the copper strands from the windings goes all the way to the connectors. Its just shrink tubed.