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 Post subject: transformer winding equipment
PostPosted: Aug Mon 17, 2020 3:02 am 
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Joined: Feb Tue 05, 2019 1:02 am
Posts: 91
Location: Blackshear ,Georgia
here's just one of my winders in action , along with a few pics of completed rewound transformers along with testing /measuring one i just completed ,( the one being wound in the video, share your setups you use. Here you go Chas!


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 Post subject: Re: transformer winding equipment
PostPosted: Aug Mon 17, 2020 3:07 am 
Member

Joined: Feb Tue 05, 2019 1:02 am
Posts: 91
Location: Blackshear ,Georgia
here's a few more


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 Post subject: Re: transformer winding equipment
PostPosted: Aug Mon 17, 2020 3:09 am 
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Joined: Feb Tue 05, 2019 1:02 am
Posts: 91
Location: Blackshear ,Georgia
and a few more


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 Post subject: Re: transformer winding equipment
PostPosted: Aug Mon 17, 2020 3:11 am 
Member

Joined: Feb Tue 05, 2019 1:02 am
Posts: 91
Location: Blackshear ,Georgia
couple more


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[ Play Quicktime file ] IMG_5090 (1).3gp [ 573.11 KiB | Viewed 560 times ]
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 Post subject: Re: transformer winding equipment
PostPosted: Aug Mon 17, 2020 4:00 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 14860
Location: S. Dartmouth MA 02748-1225 USA
Well I'll be! That looks like the NZ-2 China winding machine!

[ Play Quicktime file ] IMG_5090 (1).3gp

https://ussolid.com/u-s-solid-manual-co ... chine.html

How do you like it?

How well does it go with #40 to #44 magnet wire?

Where are the bobbins, Kapton tape and lead wire from?

I have been putting off getting one for a couple of years, at one point they were $150 and free shipping...

Thanks very much Eddie!

Chas

_________________
List' & I will Enchant Thine Ear


Last edited by Chas on Aug Mon 17, 2020 4:24 am, edited 1 time in total.

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 Post subject: Re: transformer winding equipment
PostPosted: Aug Mon 17, 2020 4:23 am 
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Joined: Feb Tue 05, 2019 1:02 am
Posts: 91
Location: Blackshear ,Georgia
Chas ,yes that's the NZ-2 china special,I also have a NZ-1 and a morris, I rigged up a cheap wiper motor to run the NZ-3 , runs at about 100 rpm at coil , I need to get a larger diameter pulley to go on motor to speed it up a little more , has a rheostat to start slow then crank it wide open , I've made assorted bobbin holder tools as I need them , I've rewound horn drivers , voice coils for regular type speakers and transformer coils , I don't think you can get traverse to go any narrowerthan probably 1/4-3/8" wide though so about useless for those kinda coils , about 2 lb spools are as big as wire holder will fit . its set up with a pointer for swg windings so to do 40-44 awg you have to just crank that to max of 47swg setting,I'd say is about 90 percent perfect on those gauges for coil spacing tightly.


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Last edited by eddie clark on Aug Mon 17, 2020 4:33 am, edited 1 time in total.
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 Post subject: Re: transformer winding equipment
PostPosted: Aug Mon 17, 2020 4:32 am 
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Joined: Feb Tue 05, 2019 1:02 am
Posts: 91
Location: Blackshear ,Georgia
The bobbins i hand make using heavy construction paper i get from hobby lobby, i get the sheets of .020 thickness plastic( i forget the name at the moment ) from Mcmaster -Carr, the 28 gauge stranded lead wire i get from Reminton along with magnet wire from them and Temco < I wrap the paper around bobbin form then put plastic ends on and use thin coat of two part epoxy to attach and coat the paper , use the captan tape to wrap between primary and secondary windings along with a thin epoxy coat on that to help hold bobbin sides on , then again at finish , then i wrap fish tape around it , the captan tape and fish tape i got off Amazon.


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 Post subject: Re: transformer winding equipment
PostPosted: Aug Mon 17, 2020 4:36 am 
Member

Joined: Feb Tue 05, 2019 1:02 am
Posts: 91
Location: Blackshear ,Georgia
I use this link mostly for getting me to the ballpark for coils ;http://production-solution.com/coil-calculator.htm


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 Post subject: Re: transformer winding equipment
PostPosted: Aug Mon 17, 2020 4:47 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 14860
Location: S. Dartmouth MA 02748-1225 USA
Eddie,

Thanks very much for all the information.

I have several Morris winders that will do spiderweb coils like on that radio you recently got. Another Morris is set-up with a hand made heart cam for 1" traverse, it will wind DeForest/Giblin honeycomb style coil to at least 250 turns.

Your a man of innovation!

Chas

_________________
List' & I will Enchant Thine Ear


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 Post subject: Re: transformer winding equipment
PostPosted: Oct Sun 04, 2020 10:59 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1424
Location: Cambridge MN USA
The color of the leads- are you duplicating what was already in the radio? Modern RMA color code would make the B+ red and the plate blue.

Scott Todd


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 Post subject: Re: transformer winding equipment
PostPosted: Oct Mon 05, 2020 12:02 am 
Member

Joined: Feb Tue 05, 2019 1:02 am
Posts: 91
Location: Blackshear ,Georgia
I'm using Red:B+, Blue:plate ,Green:grids ,Yellow: cathodes, for audio transformers unless oddball then i match colors as i can


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