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Applying varnish to stator  Rate Topic 
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 Posted: Fri Apr 28th, 2017 10:33 pm
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Matt Hazel
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I have a post 1950 Westinghouse that I'm trying to get functional again for my mother, since it was her Dad's.  It's in pretty rough shape and is missing the screw that holds the oscillating arm to the shaft coming out of the gearbox.  I also don't know if the 3 speed switch is repairable.  Does anyone know where I might find replacements that will work?  I don't really care about it being original, since it's in pretty bad shape. 

On to the main topic...varnishing the stator.  The head wires have to be replaced, and some of the stator wires are a bit loose, so I was going to apply a coat or two of red insulating varnish to help fix them into place.  I already have the varnish, but have a question.  Will it cause any harm to get varnish on the inside of the stator, where the rotor rides?  In my mind, it shouldn't make a difference, as long as it's not thick enough to actually rub the rotor, but I want to make sure.  Also, would it be a good idea to put a light coat of varnish on the rotor, or is it best to just clean it and leave it bare?  This fan will be on a porch, in the South Texas humidity a lot of time, so the more parts I can protect, the better.

Thanks!

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 Posted: Sat Apr 29th, 2017 12:25 am
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Lane Shirey
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Pictures that support your questions help us to know what fan and problems you have. 

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 Posted: Sat Apr 29th, 2017 05:09 am
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David Allen
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Hi Matt. I just made a video of your exact question and it has about 3 hours left to upload.

To answer your question - yes it matters if varnish gets in the inside of the stator. It will take up the air gap and make the motor bind up.

I like to scrape this out with a utility blade once the varnish is starting to get tacky.

EDIT: The video should be ready soon. Hope this answers your question! If video says still processing, just check back later.


Last edited on Sat Apr 29th, 2017 05:45 am by David Allen

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 Posted: Mon May 1st, 2017 02:32 pm
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Matt Hazel
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Lane Shirey wrote: Pictures that support your questions help us to know what fan and problems you have.

Sorry, my common sense wasn't working Friday!  I guess it WOULD help if I actually gave info about the fan I have.  I don't have pics right now, because it's disassembled on my work bench, but the fan is a Westinghouse Style 1381399 Serial HS, Catalog number 16SD.

My fan is the same model as the pic below, which I swiped from someone here, but not in nearly as good of condition. 

Attached Image (viewed 163 times):

westyfan.jpg

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 Posted: Mon May 1st, 2017 02:34 pm
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Matt Hazel
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David, thanks for that!  I knew that binding was a big no-no, but wasn't sure if a thin layer was OK. Most of the videos I'd seen showed people dipping the entire stator in varnish, but never say if they clean the inside or leave it.  Thanks a ton!

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 Posted: Fri May 12th, 2017 12:12 am
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Matt Hazel
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Well, it appears as though the stator is shot.  All of the windings are pretty much bare and shorted.  Haven't had any luck finding a replacement online, so I may have to get it rewound if I can find someone to do it affordably.  The local shop that does it around here gave me a rough estimate of $300 or more, and I can't afford that.  I called White Armature as well, but they need me to ship it to them before they will give me a quote, so that's kind of a last resort if I can't find someone closeby to do it. 

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 Posted: Fri May 12th, 2017 12:19 am
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Lane Shirey
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I'm pretty sure that white only does armatures and not stators. They do a great job on armatures though. .

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 Posted: Fri May 12th, 2017 12:24 am
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David Allen
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Awe man that does look pretty bad. It looks as if the binding string is burned off at least one of the coils.

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 Posted: Fri May 12th, 2017 12:32 am
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Matt Hazel
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Lane Shirey wrote: I'm pretty sure that white only does armatures and not stators. They do a great job on armatures though. .I told the man (he was very nice) that it was a shaded pole motor and he said that they can and do rewind them, but couldn't give me an estimate without having it in hand.  I guess maybe they've branched out to motors.  He said that the price depends a lot on if they have to wind it by hand or can use the machine, so I guess they've gotten into the stator game now.

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 Posted: Fri May 12th, 2017 12:34 am
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Matt Hazel
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David Allen wrote: Awe man that does look pretty bad. It looks as if the binding string is burned off at least one of the coils.Yes sir.  String burned off and all of those brighter colored wires are missing the varnish and are shorted.  When I first got into it, I just thought the speed coil, or speed resistor, or whatever it's called, was burned up.  Now I'm thinking that the motor shorted out and possibly friend the speed coil with it. 

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