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Old Sep 08, 2009, 11:28 PM
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praymond's Avatar
New Hampshire-seacoast area
Joined Jun 2005
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Hey that's exactly how I wind my motors. the only thing I do is I thread the last turn under the starting crossover/jumper on that last pole. it locks in that last turn lead out wire. Your pic shows it laying on top of the jumper from the prevoius pole

paul
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Old Sep 09, 2009, 03:50 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
The Netherlands, GE, Nijmegen
Joined Feb 2001
10,660 Posts
Quote:
Originally Posted by rloberlin
... Does this half-turn count? ...
Partial winds/turns do count.


And since you are new here ...

Motor_rewinding_101
http://www.gobrushless.com
-> knowledge base
-> basic overview (1-5)

Tips and tricks, checks and tests, may keep you from frying yer ESC and/or controller:
http://www.rcgroups.com/forums/showthread.php?t=240993
http://www.wattflyer.com/forums/showthread.php?t=35216

Vriendelijke groeten Ron
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Old Sep 09, 2009, 11:31 PM
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Thanks for the help guys!
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Old Sep 26, 2009, 06:18 AM
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Is there any consensus on a 'best' 2730 rewind for 2 cell 3D?
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Old Sep 26, 2009, 03:26 PM
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Carmichael, CA
Joined Feb 2007
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My favorite 2s 3D wind: 9T-24awg-DLRK-Y
Approximate performance:
Kv = 1840 RPM/V / Io = 0.78A / Rm = 0.140ohm
GWS 8040hd / 2s730 20c / 10A / 17oz static

Cheers,
Kev
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Old Sep 27, 2009, 06:11 AM
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Thanks. I'm not completely familiar with DLRK turns terminology. I assume 9T means nine turns on each tooth?
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Old Sep 27, 2009, 11:34 AM
Dave North
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USA, CA, San Jose
Joined Apr 2004
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Quote:
Originally Posted by MGeo
I assume 9T means nine turns on each tooth?
In this case, yes, it does. But because of some ill-considered traditions, one is never quite sure with dLRK unless you ask.

9/24 is a good choice. There are some arguably better setups, but they're quite a bit more difficult to wind.


Dave
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Old Sep 27, 2009, 02:10 PM
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MGeo, you should be aware that DLRK also requires a 14magnet rotor, which is available only on the 3000Kv models. The rest are 16magnet rotors, so for example you can't make a DLRK with a 1500Kv stock motor. You can make a 9T-24awg-ABC with a 16magnet rotor, but it will be noisier and have a slightly lower Kv; not that lower Kv is always a bad thing. FWIW, I've fit 9T of 23awg on a fat stator, so 24 will should be cake.

Dave,
I just tried a 13.5T-25awg, my first adlrk attempt. I got 1495Kv/Io 1.79A/Rm 0.368ohm, lol, and it smelled funny after the testing; it's shorted for sure. I had a "fathead" stator and could only get 6T on the first, so it was a 6-6-2/1, and a few of the last 2nd layer turns ran out of room. I shaved some extra thick goop from the stator for a 2nd try at it.

When you did your 14T-25awgs on these fatheads, did you use 6-6- or 7-6-, or what?

Cheers,
Kev

[edit: MGeo, after looking through Manuel's spreadsheet, I think an even better option would be 16T-26awg-delta (is that what you had in mind Dave?). Just a hair lower Kv than 9T, and slightly higher efficiency. Thinner wire, but the 3rd layer qualifies it as a harder wind.]
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Old Sep 27, 2009, 02:34 PM
Dave North
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USA, CA, San Jose
Joined Apr 2004
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Quote:
Originally Posted by Truglodite
..I got 1495Kv/Io 1.79A/Rm 0.368ohm, lol, and it smelled funny after the testing; it's shorted for sure ... When you did your 14T-25awgs on these fatheads, did you use 6-6- or 7-6-, or what?
It's shorted. That Io is a clue too! I just did a 13T on a fathead, which worked fine as a 7/6 with "8" sort of hanging outside of 7 ala Len. It can be folded back in so the wires are actually on top of each other at the outside. The 14Ts I did were just a little roomier and I did them as double-cheaters on the inside (between the transit teeth). I don't do this anymore because it's a tremendous pain in the arse and you don't get much for it.
Quote:
16T-26awg-delta (is that what you had in mind Dave?).
There are three variants I like better, and that's one of them. 17T 25awg is even better, but requires a nice stator. Same for 10T 23awg, which I prefer with modern batteries (the 9T 23awg has been going way over 10 amps with some of my newer 610s -- and that's without even driving any servos).

Dave
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Old Sep 28, 2009, 01:25 AM
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Quote:
Originally Posted by timocharis
I just did a 13T on a fathead, which worked fine as a 7/6 with "8" sort of hanging outside of 7 ala Len.
Thanks for the tip Dave. I'll have to try that on a 13T next time; I'm already 2 phases committed to a 6-6-2/1 on this one (5 if you are counting burnt motors ). That "lazy 8" trick sounds much easier than having to deal with a 3rd layer for a 13T.

So far shaving off those insulation "runs" is helping; my 12th turns are going through much smoother this time around... so far.

Quote:
Originally Posted by timocharis
There are three variants I like better, and that's one of them. 17T 25awg is even better, but requires a nice stator. Same for 10T 23awg, which I prefer with modern batteries (the 9T 23awg has been going way over 10 amps with some of my newer 610s -- and that's without even driving any servos).
17d and 10y, right? Those winds sound so easy when you say it, hehe, but I know even on a roomy stator they're a challenge. I have done some 10y-24awg work on a few cramped stators. I like the results with my new 730 pl2's, and I do have one "exceptional" stator set aside. I was planning on 13T-24awg with it (blah), but that 17d sound more interesting.

Cheers,
Kev
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Old Sep 28, 2009, 06:06 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
The Netherlands, GE, Nijmegen
Joined Feb 2001
10,660 Posts
Quote:
Originally Posted by Truglodite
... DLRK also requires a 14magnet rotor ...
Or a 10magnetpole rotor. Kv would roughly be 40% higher and Kt accordingly lower. And motor would run in opposite direction.

Vriendelijke groeten Ron
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Old Sep 28, 2009, 10:54 AM
Dave North
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USA, CA, San Jose
Joined Apr 2004
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Quote:
Originally Posted by Truglodite
17d and 10y, right?
Right! Theoretically they're very similar, and in reality the are too ... but not exactly the same. The 17d has a bit more power (as you'd expect) and the 10y is very well-behaved.


Dave
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Old Sep 28, 2009, 05:03 PM
Got Thermals???
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United States, UT, Roy
Joined Apr 2008
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Ok, I've just made it through the whole thread and want to make sure I've got it right.

I have a 2730-1300 that needs rewound. 16 magnets means I can't use a DLRK wind right? It has to be ABC wound. I have 26g and 24g newbie wire from GB. I'm using 2S 500 packs. Looks like 16T in a Delta termination will give me the highest eff?

I've rewound a couple of small motors in a DLRK config, but still pretty new to this.
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Old Sep 28, 2009, 06:17 PM
Dave North
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USA, CA, San Jose
Joined Apr 2004
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Quote:
Originally Posted by Fishjunky
I have a 2730-1300 that needs rewound. 16 magnets means I can't use a DLRK wind right?
Right.
Quote:
Looks like 16T in a Delta termination will give me the highest eff?
Since you have 26g for the 16T, probably not. 9T 24g and 16T 26g will be about the same. You might find the 9/24 easier, and it will be more forgiving of any imperfections.


Dave
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Old Oct 01, 2009, 01:42 PM
Got Thermals???
Fishjunky's Avatar
United States, UT, Roy
Joined Apr 2008
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Thanks for your response. Mine is not nearly as pretty but hopefully it will work
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