What Glue for stator magnets?
 

Hi everyone,

I'm getting ready to start rebuilding some motors that I have.

What I'm wondering is, What glue or expoxy do they use to hold magnets on a rotor?

Some rotors are wrapped with Kevlar on top of glueing the magnets, then the kevlar is saturated with the same "glue".

Anyone know?

I am guessing it is high temp epoxy....

My best guess for over the counter stuff is jbweld. Heat it up with a heat gun and it gets quite runny, so it would work with the kevlar strands.

The regular clear epoxy is not high temp, and another user here tried to use it and it got soft.

Lutach will know, as I asked him before and he told me where to go. I have a thread about wrapping the magnets and it has a link in it... If you feel like searching!

I have to visit the "little room without a phone" or I would do it for you...

Info on high temp resins:

-Epoxy resins top out at about 500 to 550 F. Note that higher temp epoxies can be toxic to work with

-some Phynolic resins can handle temps up tp about 900 F+- but are not available except for very large Industrail customers.

-Cermanic resins can handle temps ip to 4000F, are cheap, but are britlle

- Other published non-metalic resins typical haddle temps up to 900F, but are not available to the public

This is not from me, it's in the following website:

http://www.solarcomposites.com/compo...20sleeves.html

Thank you guys! I'll definately check into the different choices.

I do have several motors to rebuild. :lol:

If anyone is interested in a AXI 4120 or AXI 4130 in just about any wind. I will have these rolling off really soon. Just pm me with your needs.

http://i160.photobucket.com/albums/t...m/DSC07316.jpg


Has anyone ever seen a Pletty Maxx Rotor with the kevlar removed?

The Pletty Max is a 4 pole motor using 12 magnets that are 5mm wide, 30mm long and each is about 1.5mm thick. Pole configuration is NNN-SSS-NNN-SSS, making it a 4 pole motor. I'm thinking about replacing these magnets with some N50 magnets. Then replacing the Kevlar Wrap.

http://i160.photobucket.com/albums/t...m/DSC07315.jpg

you ship them axi motors to england?

Think it would be possible to reconfigure the magnets it has in a NN-SS-NN-SS-NN-SS to make it a 6 pole motor? Or maybe make it a 2 pole?

Pm sent :yes:

Yes, but that would require changing the winding configuration also.

I'll go back as a 4 pole since the winding I have is good.

I wonder what strength the magnets are in a Pletty from the factory? I've read several places about demagnetized rotors.

When I cracked the rotor on my motor, I tried JB weld, and it did not hold. I used isopropal alcohol to clean everything really good and wrapped the rotor in kevlar, but no luck.

http://homepage.mac.com/lonewolf039/...o/P4130214.jpg

http://homepage.mac.com/lonewolf039/...o/P4130229.jpg

http://homepage.mac.com/lonewolf039/.../P41400021.jpg

I tried a bunch of different glues, even red locktight, but eventually shorted out the windings so I now have a nice paperweight:lol: