Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Electronics Support > Electric Motors, Gearing, Speed Controls, Gyros, Receivers, and Other Electronics Discussion > Electric Motors Winding and Repair


Electric Motors Winding and Repair Electric Motors Winding and Repair Discussion


Reply
 
LinkBack Thread Tools Display Modes
Old 10-11-2016, 03:57 PM   #1 (permalink)
Registered Users
 

Join Date: Jan 2013
Default Rewind KDE4215FX-465-22P

I have 6 brushles Motors KDE 4215FX.
4 of them do not work, the winding mistakenly hurt when installed with longer screws.
The two have a working approximately 477 Kv.
With a value of Rm = .0458 Ohms.
The other 4 measure erratically and almost all very high values.
View photo.

As seen in the photos, these stators come with a clip to hold the stator and a pin.
3 of them include the pin and 3 no. (It is replaced with epoxy)

Stator 40.14x15.62, .2mm lamination.
I am in the process of dismantling.
My challenge is rewind-er to work much closer with the 2 original.
http://www.rcgroups.com/forums/showthread.php?t=2751954

Y try this schematic
maybe double LRK.

Mi termination is:
Start A to End C
Start B to End A
Start C to End B

Unfortunately the results are not as expected.
It looks very nice but does not help me.

I will have to return to the initial scheme, but will buy 19.5AWG or something like it.

My initial tests are as follows.

Rm .0367 ohms.
No load test.

6200 rpm, 3.2A, 10.98V= 564 Kv.
100 pts more in Kv y 2A additional.

I have some problem of termination, or simply the normal behavior of this scheme.
Attached Thumbnails
Click image for larger version

Name:	24n22plrk.png
Views:	97
Size:	109.0 KB
ID:	675340   Click image for larger version

Name:	20161011_123238.jpg
Views:	141
Size:	71.6 KB
ID:	675341  
Manuel V is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 10-15-2016, 07:50 AM   #2 (permalink)
Registered Users
 
Posts: 1,370
 

Join Date: May 2014
Location: Research Triangle Park
Default

Maybe try a LRK on each half then parallel for a YY or DD scheme. That should drop your dc resistance and possibly lower your Io.
__________________
"Diese Flugzeuge werden von Clowns entworfen, die von Affen beaufsichtigt warden....."
1BOHO is offline        Reply With Quote Quick reply to this message
Old 10-16-2016, 12:59 AM   #3 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Jan 2013
Default

Thanks 1BOHO.

Today solved the problem, the 6th coil is the other way around.
Now the Kv is 480, Rm .037ohms, Io 1.17A.
Manuel V is offline        Reply With Quote Quick reply to this message
Old 10-16-2016, 08:22 PM   #4 (permalink)
Registered Users
 
Posts: 1,370
 

Join Date: May 2014
Location: Research Triangle Park
Default

Nice wind with a high Kw. What's the advanced winding scheme plotted harmonic content look like for this wind?
__________________
"Diese Flugzeuge werden von Clowns entworfen, die von Affen beaufsichtigt warden....."
1BOHO is offline        Reply With Quote Quick reply to this message
Old 10-19-2016, 11:36 PM   #5 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Jan 2013
Default

Originally rewind this motor with the basic scheme AaAabBbBCcCcaAaABbBbcCcC. But the Kv was less than the original. 447 vs 477. then had to take a turn. and the motor looked very empty.

Then I decided to make this wind where allowed me to put a much thicker wire 19AWG. A-A-b-b-C-C-a-a-B-B-c-c- Kv 480 Kv.

I also made a third motor with double 23AWG number of turns in parallel AaAabBbBCcCc/aAaABbBbcCcC scheme with a 470 kv.
Attached Thumbnails
Click image for larger version

Name:	20161006_171658.jpg
Views:	104
Size:	104.2 KB
ID:	676385   Click image for larger version

Name:	20161015_141552.jpg
Views:	102
Size:	56.3 KB
ID:	676386   Click image for larger version

Name:	20161014_191328.jpg
Views:	95
Size:	77.1 KB
ID:	676387  
Manuel V is offline        Reply With Quote Quick reply to this message
Old 10-24-2016, 11:08 AM   #6 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Jan 2013
Default

4 motor re-winded and two original wind.
Attached Thumbnails
Click image for larger version

Name:	thumb-20161022_185919.jpg
Views:	89
Size:	6.9 KB
ID:	677197   Click image for larger version

Name:	Pruebamotor5.jpg
Views:	103
Size:	85.9 KB
ID:	677199  
Manuel V is offline        Reply With Quote Quick reply to this message
Reply




Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the HeliFreak forums, you must first register.
Please enter your desired user name, your REAL and WORKING email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself. Use a real email address or you will not be granted access to the site. Thank you.
Email Address:
Location
Where do you live? ie: Country, State, City or General Geographic Location please.
Name and Lastname
Enter name and last name here. (This information is not shown to the general public. Optional)
Helicopter #1
Enter Helicopter #1 type and equipment.
Helicopter #2
Enter Helicopter #2 type and equipment.
Helicopter #3
Enter Helicopter #3 type and equipment.
Helicopter #4
Enter Helicopter #4 type and equipment.

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




Copyright © Website Acquisitions Inc. All rights reserved.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.

SEO by vBSEO 3.6.1