Stator rebuild - Where to get epoxy

[koolaid_kid]

I have read the papers on rebuilding them, and researched the wire; the rebuild process appears attainable. I have a dead stator that I can experiment with. However, the epoxy listed (3M 2216 or 1838) is pretty pricey for the small amount I will need. Are there any substitutes, and has anyone used them with success? It should have similar qualities, high sheer strength, high shock resistance, etc.
Thanks in advance.

 

[DMorris]

Look for a local electric motor rebuild shop and ask them what they use.
They might even give you some - at the small amount you want.

 

[koolaid_kid]

Thanks for the suggestion Don. I found 2 companies in the Yellow Pages, but they were already closed when I called them. I'll try again tomorrow.
Has anyone else ever rebuilt a stator? I don't need another stator at this point, I'm just doing this out of ennui, so I would like to keep costs to a minimum.

 

[JEEPRUSTY]

http://www.thegsresources.com/_forum/showthread.php?t=100230&highlight=skreemer+stator&page=5

 

[Nessism]

There has been several threads about rebuilding stators. Maybe check the archives?

 

[koolaid_kid]

Thanks for the link JEEPRUSTY. I am using the "Rewinding your own Stator[1].pdf I downloaded from a link on BassCliff's website. The author suggested using 3M 2216 or 1838 epoxy. Nerobro did not use any. I wonder which is most correct, and why. The pics I have seen of commercial stators appear to have been coated with something, I would expect this to be the epoxy coating.

 

[JEEPRUSTY]

Thanks for the link JEEPRUSTY. I am using the "Rewinding your own Stator[1].pdf I downloaded from a link on BassCliff's website. The author suggested using 3M 2216 or 1838 epoxy. Nerobro did not use any. I wonder which is most correct, and why. The pics I have seen of commercial stators appear to have been coated with something, I would expect this to be the epoxy coating.

A good electric motor guy could answer this. I had a neighbour who was setup for this had a dedicated oven and all the things you need for rewindings stators or motors.

He moved though.

 

[Planecrazy]

Unless I'm mistaken Greg (Nerobro) is still using his rewound stator with no troubles to date. If you want his phone#, George, I'm sure he wouldn't mind chatting with you about his experience. He lives "just down the road" from me so we connect up every now and then...

Regards,

 

[Griffin]

KK,

The company I work for has an electric division with a motor shop where they rewind, clean, dip, and bake motor windings all day.

I'll ask the shop foreman his thoughts on the subject.

 

[koolaid_kid]

KK,

The company I work for has an electric division with a motor shop where they rewind, clean, dip, and bake motor windings all day.

I'll ask the shop foreman his thoughts on the subject.

Thanks. Brian gave me a name of a local place I may be able to find stuff (MAI Prime Parts), but I'll wait and see what your foreman says.
I've done quite a bit of investigation and found similar information in several places, but before I start I want to make sure I am headed down the correct path.

 

[Griffin]

So I asked the shop foreman (Mark) what they use for dipping and baking motor windings. He showed my the stuff they use - it's called "R330". It is a two part resin/hardener epoxy that flows easily onto a warm (120 degree F) surface when first mixed, dries into a tacky goop, then hardens like a rock during baking (about an hour at 320 degrees F).

The kit comes with a 12 oz can of resin and a 4 oz bottle of hardener. When I showed Mark a stator, he figured that we could probably do 5 or 6 of them with the kit easily.

My (employee) cost on the stuff is $18.95.

 

[BassCliff]

Hi,

Something I collected:

Using the stator rewinding guide in the Garage Section of The GS Resources website, Mr. Nerobro documents his stator rewinding experience in this thread on the GSR Forum.

Seems Mr. Nerobro didn't use any epoxy.


Thank you for your indulgence,

BassCliff

 

[bwringer]

Hmmm... I wonder about this stuff?
http://www.rshughes.com/products/075577_96665.html

Only sez it can withstand up to 300 degrees F, though.
http://www.kpg-industrial.com/products/schenectady_red_insulating_enamel/

 

[koolaid_kid]

John, I agree. When I bake my painted parts in the house oven, I have to air out the house and vacate for a while. But the results are worth it. And I have no spousal component to worry about. Hehe. Hey Brian, since we are going to be rewiring your garage, how about we get an oven installed in there also?

Brian, I like what you found. It says bake at 300 degrees, so it should be good for more than that.

Cliff, thanks. I am using the collective references of those plus what I have read on the web. Although nerobro is not using any epoxy, I choose to go the way of the pros and use some, if only for the purpose of being robust. And perhaps a copycat, IDK. Brian and I discussed this and concluded the epoxy path is the way to go.

Brett, that is exactly what I am looking for. Please get one for me. While you are at it, I am also looking for a spool of 18 gauge wire for the same. 500 feet, 5 pounds, however it is measured. Price, please? I should have asked at the time but I failed to think about it.

 

[twr1776]

07-19-2010 06:42 PM koolaid_kid Stator rebuild

Just go out and buy a new one you cheap bastich. Just bustin your b@lls.

Do I smell "Georges Stator Rebuild Service" ? :idea:

 

[koolaid_kid]

Like I would listen to someone who only rode L models. Weenie.
And yes, you smell.

I have 3 burned out stators. I figure that I will screw the first one up, the second one will be marginal, and the third one will be a keeper. At which point I can redo the first one and give it to Brian, give away the second one to some sucker (like you), and install the third one in my bike.
As a side note, I inspected the stator in my GPz. It shows no signs of burning or heat induced issues. None at all. It has over 14k miles on it, and is most likely a shunt style system. I wonder why it is not having issues. Odd.

 

[Matchless]

Have you had a look at the tutorial drew up when I did mine? I have since done two and they are still working perfectly. Charging kicks in immediated at about 1300 RPM with the specs I used.

See here: http://www.mediafire.com/?jm3lzukjzyt
Hope it helps you.

 

[koolaid_kid]

Have you had a look at the tutorial drew up when I did mine? I have since done two and they are still working perfectly. Charging kicks in immediated at about 1300 RPM with the specs I used.

See here: http://www.mediafire.com/?jm3lzukjzyt
Hope it helps you.

Yes, your tutorial is the base I am using for this venture. It is most excellent. And due to your measurements and writing style, we suspected you were located in South Africa.

 

[Matchless]

Yes, your tutorial is the base I am using for this venture. It is most excellent. And due to your measurements and writing style, we suspected you were located in South Africa.

Yes, South Africa here in the Garden Route on our East coast.

If you use good wire and epoxy (not resin or varnish) and do some good preparations on the inner of the poles you will most likely do a better job than many off the shelf types.

Do the first two or three poles to get the hang of it and familiarise yourself with the crossovers between the poles and especially on how to get about 35 winds on a pole as closely as you can. Pull those off and start again and you will find it quite easy, just a bit tedious.

A small battery rotisserie for a barbeque can slowly spin the stator while you apply the epoxy and heat with hot air to thin it so it penetrates easier.

Just a tip, practice turning ther stator and keeping the wire stationary while winding the poles, pigskin gloves help a lot. An old T-shirt over your personal beer vessel helps. Keep the wire roll on its end, dont let it spin freely.

Then good luck.