Part needed

[Mike Miller]

I hadn't tried the local motor rewinder, mainly because he seems to be into
larger motors such as hvac blower motors and the like.  Also, I'm not sure
that this motor has bearings in it, I'd swear that when I went through it it
had oilite bushings such as the smaller and cheaper r/c car motors do.  At
that time, I tried a basic rebuilding, cleaning the commutator and removing
all of the carbon buildup from the brushes, but it only lasted a short time.
I'll check with the local guy and see what he can do.  Also, I'll
double-check some of the resources that others have given me and see what I
can come up with.  Thanks for the suggestions!
        --Mike, KA9RQW

----- Original Message -----
From: "Neil Morrison" <neilsmorr at HOTMAIL.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Friday, May 10, 2002 2:54 PM
Subject: Re: Part needed


> Have you tried a motor repair/rewinder shop?
> Probably needs new bearings, and the commutator cleaned and undercut.
> Usually, with small motors, by the time the brushes are gone, the rest is
> needed too.
>
> Regards,
>
> Neil
>
> ----- Original Message -----
> From: "Mike Miller" <ka9rqw at MCHSI.COM>
>
>
> Anyone got a clue where to find a motor, Heathkit part number 420-636, for
> an SA-2500 Automatic Antenna Tuner?  I've tried to rebuild mine, but it
> keeps burning up the brushes and shorting out.  Obviously, when it does
> this, it's damaging the drive transistors as well.  This can get rather
> expensive and rather exasperating...rather quickly.  Any assistance would
be
> greatly appreciated.  Thanks!
>         --Mike, KA9RQW
>
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