| Looking for Onan 6kw takeout near Ohio [message #214275] |
Sat, 13 July 2013 23:05  |
Mike Teets
Messages: 299
Registered: January 2004
Location: Dublin, OH
Karma: 0
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I have a shorted, grounded armature. Otherwise working generator. I am looking for a known good armature. I am willing to take a whole unit off your hands if you are looking to clear space or replace with new generator. Will drive reasonable distances from Columbus to avoid shipping the fragile and heavy part.
Mike, Dublin Ohio
77 PB, 6000 watt Onan.
Mike, GMCing since 2002
77 Palm Beach, 260, 403
Dublin, OH
http://teamteets.com/gmc/
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| Re: Looking for Onan 6kw takeout near Ohio [message #214286 is a reply to message #214282] |
Sun, 14 July 2013 07:07  |
Mike Teets
Messages: 299
Registered: January 2004
Location: Dublin, OH
Karma: 0
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Yes, I was at Jim's place on Wednesday. It was there that I earned my Onan Apprentice Entry Level Certificate. I found that I really should have paid more attention to my EE classes in college. Jim and father are incredibly knowledgeable and resourceful when it comes to Onans and GMCs generally.
Jim had been focused on field windings as that is what normally fails. Oddly, I have good fields but a bad armature. My field windings are different than any they have seen before and may have given Jim a design he can replicate his shop.
I have spent several days looking for shops that will rebuild/rewind the armature. I have found at least one competent place that will do it but the cost is steep because the armature must be done by hand and will be labor intensive... 6-8 hours.
Mike
Onan Apprentice Level 1
Seeking armature in Dublin
Mike, GMCing since 2002
77 Palm Beach, 260, 403
Dublin, OH
http://teamteets.com/gmc/
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| Re: [GMCnet] Looking for Onan 6kw takeout near Ohio [message #214306 is a reply to message #214304] |
Sun, 14 July 2013 10:20 |
Mike Teets
Messages: 299
Registered: January 2004
Location: Dublin, OH
Karma: 0
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Not ignorance! It is possible that this can be done. The bad winding is
one on the outside edge. The issue is that they may get into it and find
that while melting out the bad winding varnish, they damage the others or
the fiber collar on the shaft... then bam, $800. So... I may still have to
do this but will try finding a good used one first.
On Sun, Jul 14, 2013 at 10:54 AM, A. <markbb1@netzero.com> wrote:
>
>
> Mike Teets wrote on Sun, 14 July 2013 07:07
> > ...I have spent several days looking for shops that will rebuild/rewind
> the armature. I have found at least one competent place that will do it
> but the cost is steep because the armature must be done by hand and will be
> labor intensive... 6-8 hours.
> >
> > Mike
> > Onan Apprentice Level 1
> > Seeking armature in Dublin
> This may display some ignorance on my part, but the armature has several
> windings, and only one is defective. Have the competent shop find and fix
> the defective winding only, not the whole armature. Go from 6 - 8 hours of
> labor down to 2.
>
> --
> '73 23' Sequoia For Camping
> '73 23' CanyonLands For Sale
> UA (Upper Alabama)
> "Time is money. If you use YOUR time, you get to keep YOUR money."
> _______________________________________________
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Mike, GMCing since 2002
77 Palm Beach, 260, 403
Dublin, OH
http://teamteets.com/gmc/
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| Re: [GMCnet] Looking for Onan 6kw takeout near Ohio [message #214331 is a reply to message #214328] |
Sun, 14 July 2013 14:31 |
Mike Teets
Messages: 299
Registered: January 2004
Location: Dublin, OH
Karma: 0
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Senior Member |
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I learned a lot this week about these things in the last 5 days. The reason for the heat is to loosen the varnish that hardens on the windings. This varnish keeps the wires isolated from each other but also makes them very hard. Normally, the motor rebuild shop uses an 800 degree oven to melt out the varnish and clean the armature prior to new winding. Something about the Onan means they can't do this and that is part of what runs up the cost.
Mike, GMCing since 2002
77 Palm Beach, 260, 403
Dublin, OH
http://teamteets.com/gmc/
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