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Old Apr 18, 2011, 09:13 AM
Nexxa
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Montreal, Qc, Canada
Joined Oct 2003
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Rewinding a Turnigy Typhoon 600 (42mm/62mm, 1100kv)

Here the motor:
http://www.hobbyking.com/hobbyking/s...dProduct=10782

I push this motor a lot on a scratch built pylon racer, and finally it gave up!
Cause of death: Stator turning with the bell!, shorting wires. The ESC survived. After dissembling, I understand why it unglue, there is just a tiny bit of epoxy to hold the stator in place.

APC E9x6
20 500 RPM
6S40C 5000mAh
115A, 2500 watts burst, 5 sec
80A, 1770 watts very often, 10-20 seconds
60A, 1300 watts continual
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Old Apr 18, 2011, 09:19 AM
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Bilbao - Spain
Joined Jun 2005
88 Posts
once you rewind the motor, you can use a trick ( i can't remember if was from jourdan or timocharis ) that is to drill a small hole between the stator and the bearing holder and insert a piece of wire in, that holds the turning better than the glue and helps in case of a further 'repair/hop up'

regards
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Old Apr 18, 2011, 09:27 AM
Nexxa
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Montreal, Qc, Canada
Joined Oct 2003
106 Posts
Original winding:
1100kv
28 wires, 32 AWG, 6 or 7 turn
12 poles, 8 magnets

I tried rewinding with 14 wires, 28AWG, It was messy. I lost count too many times, and didn’t trust me for a ESC test!
Start over 3 times! Almost same results each time! I gave up.

Yesterday I tried with 4 wires, 21AWG 4 turns. It came out ok. After some primarily testing, I tried it on ESC. Not good!!! 10AMPS at 10volts, no need of RPM reading!!! I know it’s not good 

I will give it another and final try tonight (my fingers hurt a lot and I don`t have any more band-Aid!)

Any suggestion
Target Kv: ± 850
12 poles, 8 magnets
Only have 21AWG wire.

I will post pictures

(excuse my english)
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Old Apr 18, 2011, 09:34 AM
Nexxa
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Montreal, Qc, Canada
Joined Oct 2003
106 Posts
Quote:
Originally Posted by sukoi View Post
once you rewind the motor, you can use a trick ( i can't remember if was from jourdan or timocharis ) that is to drill a small hole between the stator and the bearing holder and insert a piece of wire in, that holds the turning better than the glue and helps in case of a further 'repair/hop up'

regards
You read my toughs.

I bought 2 of those originally, I done this mod before mounting it when i replace the old one. I put a lot of JBWeld epoxy too! After all maybe too much, it will be impossible to disassemble it for a rewinding if I need too!
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Old Apr 18, 2011, 09:41 AM
Nexxa
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Montreal, Qc, Canada
Joined Oct 2003
106 Posts
The only winding possible with a 12 teeth, 8 poles is:
ABCABCABCABC

is it correct?
if yes, thats why my rewinding was not working yesterday!!! I was doing AacCBbaACcbB (Dlrk)
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Old Apr 18, 2011, 10:16 AM
Nexxa
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Montreal, Qc, Canada
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I will do it like the pic attach

Is there different type of connection for lower or higher Kv?


it was the last question!!
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Old Apr 18, 2011, 11:28 AM
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Mexico, BC, Mexicali
Joined Aug 2004
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Nexxa.

If your original wind is 6 turn for 1100 kv.
them 8t is for 825kv.

same:
If your original wind is 7 turn for 1100 kv.
them 8t is for 962kv.
and 9T is for 855.

For easy 8t wind, is necessary 18.5 - 18 awg.
o two wires 22 awg.

hard wind is 8t 18awg , two wires 21AWG,

Manuel V



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Last edited by manuel v; Apr 18, 2011 at 11:40 AM.
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Old Apr 18, 2011, 01:21 PM
Nexxa
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Montreal, Qc, Canada
Joined Oct 2003
106 Posts
Quote:
Originally Posted by manuel v View Post
Nexxa.

If your original wind is 6 turn for 1100 kv.
them 8t is for 825kv.

same:
If your original wind is 7 turn for 1100 kv.
them 8t is for 962kv.
and 9T is for 855.

For easy 8t wind, is necessary 18.5 - 18 awg.
o two wires 22 awg.

hard wind is 8t 18awg , two wires 21AWG,

Manuel V

.
Thank you. It's clear now.

Ok for 8 turns and 2x 22AWG, I will try it tonight and post pics.

Delta or Wye connection, I read a lot, but I can’t decide….

For example, if I go with a WYE, in theory I could do something like:
3 wires, 22AWG, 5 turns and have almost the same KV result as 2 wires, 22 AWG, 8 turns, Delta?
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Old Apr 18, 2011, 06:36 PM
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Mexico, BC, Mexicali
Joined Aug 2004
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The calculations are based on the original specifications.
for example.
if your motor is 6 turn in termination delta, and kv is 1100., ABC x4.
then excel turn calculator say:
See picture.

But only if you use safety as the same pattern. ABCx4 here.

Excel is made to the original data DLRK scheme.
so that your case will match only on Delta and star columns with patern ABC.

turn calculator 5 post 17.
http://www.rcgroups.com/forums/showt...urn+calculator

Manuel V
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Old Apr 19, 2011, 07:10 AM
Nexxa
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Montreal, Qc, Canada
Joined Oct 2003
106 Posts
Thanks
Im still new to all this!

By looking at the old winding, I know it’s a Delta connection.
I finish to late yesterday, so I didn't test my winding KV, but the good point, I know the motor works!!

Yesterday, I do 2 winding test.
One with 2 wires, 22AWG. I was able to put 9 turns easily (compare to my second test winding).

My second test was with 3 wires, 22AWG and 6 turns.
Phase 1, easy
Phase 2, start to think it wouldn’t fit
Phase 3, hard
Delta connection.

Tonight I will do a KV test, this weekend I will run it until failure, and do my final winding base on experiment.

(excuse my english)
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Old Apr 19, 2011, 10:16 AM
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nexxa.

Nice work.
Congratulations.

Manuel V.
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Old Apr 20, 2011, 07:24 AM
Nexxa
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Montreal, Qc, Canada
Joined Oct 2003
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Results:

3 wires, 22 AWG, 6 Turns

No load:

14.75 volts
11 880
1.8 Amps
805kv

Is it normal, efficient?
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Old Apr 20, 2011, 11:49 AM
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Mexico, BC, Mexicali
Joined Aug 2004
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nexxa

For efficiency, it is necessary to test propellers
The direct is 805 kv.
What we say one of 2:
The original Kv is not correct or not with 6 turns.
The resulting kv may be wrong.

For efficiency, it is necessary to test propellers
The direct is 805 kv.
What we say one of 2:
The original Kv is not correct or not with 6 turns.
The resulting kv may be wrong.

Testing the KV with datta logger? remember that the motor is 8 magnets.

With tachometer?

Manuel V.
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