House Cleaning

[DadHav]

Sorry Guys, I"m just getting rid of some worthless information that might get someone confused. Steve, or anyone. If you'd like to help. Please join in.

[ScubaSteve]

On phase 3, you need to NOT wind the 5 o'clock leg a second time (you already wound it in phase 1). You need to find the 11 o'clock leg instead. :wink:

Do what I did... draw up a 12 pole stator and just check off each arm as you show them being wound in each phase... you'll see, according to the picture, 2 arms are wound twice and one is left unwound.

[JimS]

If this is legable, can someone check to see if I understand the winding for a 12 leg stator and 14 magnets? (no skipped legs)
Thank You
John H.

The winding pattern (AacCBbaACcbB) is actually as below. :)

Jim

[DadHav]

Thanks Jim. I can see the that the phasing makes sense that way. I'm not sure though where the start and end of each phase is. Do you keep crossing over the center or is small (a) the tooth next to the big (A) as opposed to small (a) being directly across from big (A) Sorry to be so dumb. I only need to understand this one time and then I'll be off to wind more motors.

Thank You

John

[JimS]

John,

I've never wound a 12 leg stator, but I am fairly sure that the A phase starts on leg 1, the B phase on leg 9 and the C phase on leg 5. As to center crossing, I don't think it makes any difference whatsoever, so wind it the easiest way, ie. phase A would be wound 1,2,7,8. This would make the end of phase A on leg 8, phase B on leg 12, and phase C on leg 4. (I am counting the legs with 1 at top dead center and the rest clockwise from there.)

If there is anyone out there with more knowledge than me, feel free to correct anything I may have wrong! :)

Jim

[DadHav]

Hi Jim, I appreciate you working with me on this. I think the answer must be so obvious, that I'm missing it. If the formulas that are available were accompanied with the information pertaining to what leg gets each of the designated winds. That would make it easy for beginners like myself. If I don't find what I need I'll take another guess and get back to you. In the meantime someone might help. I do think the answer is winding 180 degrees appart, because thats the way the skip tooth method works.
Thanks.
John

[Q]

if you don't wind it 180 degrees apart you'll get a huge imbalance. The coils attract and push the mangets. Now if you would do this at 60 degree angles, you'll create a force that goes into one direction and provide you with an imbalance you will not be able to solve with machanical balancing.
In other words, you would get vibrations you would not be able to get rid off. Just draw up the forces as vectors and make sure the resulting force is zero.

HTH

[DadHav]

OK here's another try. If I leter the ABCs as shown, and use the winding order that is here. I can come up with something that matches the AacCBbaACcbB.
As you can see from the leg winding order that everything is wound 180 across from each other. There are no overlaps or empty teeth. Do you think the starts and ends would be like the overlay?
If this happens to be correct, it would be easy for me to follow,
WatChaThink.
John

[Q]

What you made is an AaBbCcaAbBcC wind. :?
You need to start from one tooth and go round. A capital letter is clockwise winding and a lower case letter is counter clockwise winding. A is the first fase, B the second and C the third. This way "AacCBbaACcbB" defines the winds for the whole stator.

You still need to keep into account that the magnets need to be pushed away and attracted at the correct locations.
I didn't mean you have to get the winds accross each other. I meant you have to get the resulting forces accross each other. Sorry for the confusion.

[DadHav]

Hi Bert and thanks for taking the time. I guess, I just can't get it. Is there any place like windings for Dummys? or was I already there and still can't do it?
If there was a place that explained it like this:
Ph-1: starts on tooth-12 wound CL; next go to: tooth-6 and wind CCW; next go to tooth-1 and wind CCL; next finish Ph-1 by winding tooth 7 CW.
Ph-2: starts on tooth 2 and is wound CW; next go to tooth-8 and wind CCL; Etc. Etc. Etc. I would be eternaly gratefull to find something like that. That I could follw. Once I do the first one, I'm sure I'll understand.
Thanks again.
John

[Q]

Oh, so you want a break down to teeth level????
OK, no prob.

Well, we know the winding diagram is AacCBbaACcbB for a 12 tooth 14 magnet motor
Mark one tooth as tooth number 1. I generally take the one where the notch is. The first letter now corresponds to the first tooth. The second letter to the next tooth (Nr 2) and so on; going all the way around.
Suppose we choose a yellow wire for A a green one for B and a red one for C
So we take our yellow wire, look at the first letter and see a capital A so we wind the first tooth clockwise. The next "A" is tooth 2, so we wind that tooth counter clockwise (lower case). Then we see that the 7th letter is also an a and a lower case one. So we wind the seventh tooth counter clockwise. Letter 8 is an A also and an upper case one, so that tooth is wound clockwise. OK, the first phase is done.
Now we take the green wire (B) and wind tooth Nr 5, then tooth Nr6, then tooth Nr11 and finally tooth 12. I suppose you can figure out the CW and CCW winding by now.
Finally we take our red wire and wind teeth 3, 4, 9 and 10.
This results in AacCBbaACcbB

Is this more clear to you? :?

[DadHav]

Thank's Bert, I was right about one thing. I was missing something frightfully obvious. I wasn't catching the fact that I could have put a number 1 thru 12 above the letters and that would be the explanation. As: As and the number Bs and the number Cs and the number in the sequence of the chart.
Man, I really feel inadequate know. I promise to make motors worthy of your help.
C YA
John

[DadHav]

Bert, Please tell me this is on track.

John

[Q]

Bert, Please tell me this is on track.

"this is on track" :lol:

Looks like you got it now

[DadHav]

Bert, Thanks. I don't know how I could have had such a brain glitch. I can wind these without even looking at the instructions anymore. I did something that was cute though to help me for the first time. See below: Red one direction white the other. Man, Does this motor run. 30oz. thrust with an APC 9.4/5 prop with three lithiums, drawing near 13 amps. Zoom Zoom.
I notice that a lot of people are looking at the pictures. Is there any way to get some of the bad information off the string?

DAD