Magnet glue.

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deronmoped   10 kW

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Magnet glue.

Post by deronmoped » Jul 05 2017 1:15pm

I had a couple of magnets come loose inside my outrunner. I have tried two types of epoxy (JB weld was one of them), but they did not work. I just tried Gorilla glue, polyurethane foaming type to see if it will work. I ran the motor a little with the Gorilla glue, but I expect it to fail too. Each time I clean up the surfaces and sand them. I clamp the magnets and wait for full cure. Anybody find a glue that works? I have used silicone to glue my rear view mirror to my windshield and that works in that application (metal to glass).

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amberwolf   100 GW

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Re: Magnet glue.

Post by amberwolf » Jul 06 2017 2:09am

One specific thread about it, with a link to another toward the end:

https://endless-sphere.com/forums/viewt ... gnet+epoxy

There's probably others that would take a different search to find.

LewTwo   100 kW

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Re: Magnet glue.

Post by LewTwo » Jul 06 2017 8:23pm

I think the gorilla glue may have a problem with the temperatures likely to occur in the motor. I did a quick search on "High Temperature Epoxy" and came up with this:
http://www.alliedelec.com/mg-chemicals- ... wAodtX0Jwg
Most of the others I found required curing ovens, were high priced or only available as industrial products.
The more I learn the more obvious the immensity of my ignorance becomes.
Weight Wennie E-Bike https://endless-sphere.com/forums/viewt ... 3#p1173723
Shaft Drive Grocery Getter https://endless-sphere.com/forums/viewt ... =6&t=90718
...and thanks to Justin!

deronmoped   10 kW

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Re: Magnet glue.

Post by deronmoped » Jul 22 2017 1:09am

So far the gorilla glue is holding.

The motor magnets never get hot, so temperature with the glue should not be a issue.

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