I inherited a rough looking old bench grinder.
I put a plug on it and the thing wouldn't turn on.
As I said it was pretty old and also kind of rusty.
I figured I'd look inside before doing anything else.
When I opened it up I noticed about half a dozen of the copper
windings had burned through. IIRC, the winding is suppose to be a
single strand of wire in order to make an electromagnetic field. And
if this is the case, I should just junk the grinder right?
I has been to long since I've messed with electric motors and i can't
remember.
It would also be impossible to match and soldier the burnt wires.

So, trash it or try something else? I know they are not that
expensive new, but it is still hard to beat free.

Thanks

Ron

On Nov 9, 9:51*am, Ron Cliborn wrote:
I inherited a rough looking old bench grinder.
I put a plug on it and the thing wouldn't turn on.
As I said it was pretty old and also kind of rusty.
I figured I'd look inside before doing anything else.
When I opened it up I noticed about half a dozen of the copper
windings had burned through. *IIRC, the winding is suppose to be a
single strand of wire in order to make an electromagnetic field. *And
if this is the case, I should just junk the grinder right?
I has been to long since I've messed with electric motors and i can't
remember.
It would also be impossible to match and soldier the burnt wires.

So, trash it or try something else? *I know they are not that
expensive new, but it is still hard to beat free.

Thanks

Ron

It's done. Salvage the wheels and keep the special left hand thread
nut, the rest is pretty much junk.

nate

Ron Cliborn wrote in
:

I inherited a rough looking old bench grinder.
I put a plug on it and the thing wouldn't turn on.
As I said it was pretty old and also kind of rusty.
I figured I'd look inside before doing anything else.
When I opened it up I noticed about half a dozen of the copper
windings had burned through. IIRC, the winding is suppose to be a
single strand of wire in order to make an electromagnetic field.

Not true. motor windings often are multi-strand.
if you parallel many tiny strands,they can carry as much current as a
single thicker strand that is harder to wind around the core.
(and results in more copper in the same space)

And
if this is the case, I should just junk the grinder right?

well,you could try to get the motor rewound,but that would probably cost
more than a new grinder.


--
Jim Yanik
jyanik
at
localnet
dot com

On Nov 9, 8:51*am, Ron Cliborn wrote:
I inherited a rough looking old bench grinder.
I put a plug on it and the thing wouldn't turn on.
As I said it was pretty old and also kind of rusty.
I figured I'd look inside before doing anything else.
When I opened it up I noticed about half a dozen of the copper
windings had burned through. *IIRC, the winding is suppose to be a
single strand of wire in order to make an electromagnetic field. *And
if this is the case, I should just junk the grinder right?
I has been to long since I've messed with electric motors and i can't
remember.
It would also be impossible to match and soldier the burnt wires.

So, trash it or try something else? *I know they are not that
expensive new, but it is still hard to beat free.

Thanks

Ron

Unless you need as boaat anchor, alvasge the wheels as someone
suggested and trash the rest. If you do save the left-hand-threaded
nut, mark it so that you don't go crazy at some time in the future
when you try to use it.

Thanks for the response.
I thought it was toast but wanted to make sure.

Thanks again
Ron



On Tue, 09 Nov 2010 09:51:17 -0500, Ron Cliborn
wrote:

I inherited a rough looking old bench grinder.
I put a plug on it and the thing wouldn't turn on.
As I said it was pretty old and also kind of rusty.
I figured I'd look inside before doing anything else.
When I opened it up I noticed about half a dozen of the copper
windings had burned through. IIRC, the winding is suppose to be a
single strand of wire in order to make an electromagnetic field. And
if this is the case, I should just junk the grinder right?
I has been to long since I've messed with electric motors and i can't
remember.
It would also be impossible to match and soldier the burnt wires.

So, trash it or try something else? I know they are not that
expensive new, but it is still hard to beat free.

Thanks

Ron

"Ron Cliborn" wrote in message
news
Thanks for the response.
I thought it was toast but wanted to make sure.

Thanks again
Ron

To make sure, hook it up and run it. If you survive, that should tell you a
lot. With machinery, there is a lot of "run until failure" modes.

Steve

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