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Old Dec 01, 2009, 02:29 PM
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Turnigy TR3536 rewind

Today i rewind TR3536, the stator is from SK3542 shortened and isolated, i bought new bearings and rewind with 5 turns 0,85 wire delta...





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Old Dec 01, 2009, 03:08 PM
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Quote:
Originally Posted by Sukalo View Post
Today i rewind TR3536, the stator is from SK3542 shortened and isolated, i bought new bearings and rewind with 5 turns 0,85 wire delta...
Hi
Good work.
Is the small screw system to lock the lams/stator tube is from stock motor or DIY ?
Louis
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Old Dec 01, 2009, 03:14 PM
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Thanks, it is DIY but i didn't cut the hole very good so i will do i again, with slightly larger screw.
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Old Dec 01, 2009, 03:20 PM
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Before i glued all my stators with some green smelly, temperature resistant glue. That i also use to glue magnets but it is impossible to remove the stator without destroying the motor. Now i use this method where i can.
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Old Dec 01, 2009, 03:27 PM
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Quote:
Originally Posted by Sukalo View Post
Before i glued all my stators with some green smelly, temperature resistant glue. That i also use to glue magnets but it is impossible to remove the stator without destroying the motor. Now i use this method where i can.
Hi Sukalo
You have adopted a very good solution to avoid Turnigy lams to rotate/ tube and cause a failure to the windings on stator flange side.
Louis
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Old Dec 01, 2009, 03:44 PM
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When you get hands on Kontronik Kora motor, it is a pleasure to see how easy it to remove the stator They don't have fancy 0,2mm laminates but it is a well constructed motor.



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Old Dec 01, 2009, 04:06 PM
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Quote:
Originally Posted by Sukalo View Post
When you get hands on Kontronik Kora motor, it is a pleasure to see how easy it to remove the stator They don't have fancy 0,2mm laminates but it is a well constructed motor.
Hi Sukalo
Yes sure but not the same price
Your pictures are showing DIY rewindings ? Y or Delta ? 7 turns per tooth ??
Picture of the rotor inside ? 10 or 14 mag ?
Size of stator (mm) ?
Kv obtained ?
Thanks
Louis
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Old Dec 01, 2009, 04:12 PM
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They are relay not in same price class

Both motors are 14p12n wind delta top motor is Kora 15-14 bottom 10-16.



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Old Dec 01, 2009, 04:29 PM
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Quote:
Originally Posted by Sukalo View Post
They are relay not in same price class

Both motors are 14p12n wind delta top motor is Kora 15-14 bottom 10-16.
Hi Sukalo
It seems Kv are different (zero current rpm)
a) Stock Kora (continuous line)
b) your DIY Kora (dotted line)
Did you make windings same # of turns ?
Louis
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Old Dec 01, 2009, 04:35 PM
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Yes the kv is different dotted line is cora that i got in my hands and measure kv-1074 the dotted is Kora after rewinding 1 turn less kv-1218 so efficiency is of course a little better.
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Old Dec 01, 2009, 04:40 PM
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This will be better stock Kora continuous line mine dotted. Same number of turns.

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Old Dec 01, 2009, 04:44 PM
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Last time when i rewinded a chinese 6-pole outrunner with 0,2mm laminates 3026 size. I was amazed how efficiency climbed when i put on the bell from HK3026...



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Old Dec 01, 2009, 05:22 PM
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Quote:
Originally Posted by Sukalo View Post
Last time when i rewinded a chinese 6-pole outrunner with 0,2mm laminates 3026 size. I was amazed how efficiency climbed when i put on the bell from HK3026...
Hi Sukalo
That is due to a stronger magnetic flux
A) from a higher "physical volume" of the magnets
B) or from a higher "grade" of the magnets
or both
For the same stator, same windings, Kv is lower, inducing a better Peakeff
(lower rpm for the same current)
Louis
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Old Dec 03, 2009, 05:52 AM
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Nice work!

How did you remove the stator from the stator tube the first time?
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Old Dec 03, 2009, 06:06 AM
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Thanks, i heated the stator with solder iron and then screwed to my motor test stand, then i wrap cloth around the stator hold it with a pliers then turn and pull the stator off.





But with the heating you destroy the bearings, so you need to buy some new ones. That is the solution in some cases but not all the stators can be removed without damage. If i have a broken motor i try to remove the stator and then if everything goes well i can rewind. There is another way you can try knock the heated stator with a tub and a hammer. If all fails, then it goes in to trash
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Last edited by Coil; Dec 03, 2009 at 06:32 AM.
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