I would be interested in knowing if it was the oil or the pot metal swelling.
3 in 1 is horrible, ever wonder what the varnish is on the governors? I rebuild
reproducers and like Rich says 3 in 1 makes an excellent glue. If anyone wants
any 3 in 1 I have two containers from the 1980's I will never use. Steve
> From: jnic...@fuse.net
> Date: Sat, 9 Jul 2011 13:45:02 -0400
> To: phono-l@oldcrank.org
> Subject: Re: [Phono-L] FW: Frozen mandrel bearing
>
> I don't agree that the potmetal "probably never will" expand. I just took an
> Edison Standard Model D out of a closet where it sat untouched for several
> years. The bearing was stuck. It was fine the previous time I used it.
>
> Jim
>
> On Jul 9, 2011, at 11:26 AM, Rich wrote:
>
> > If it was not crumbling or "expanding" by now it probably will not later so
> > I would leave it. The problem is that the term "pot metal" actually
> > describes nothing. What was the actual formula that was used to cast these
> > bearings? What was the purity of the metals used? The lack of dimensional
> > stability is the result of impunities introduced at manufacturer. The
> > impurity content seems to have been random.
> >
> > On 07/09/2011 09:24 AM, Bill Taney wrote:
> >> Is there any reason you would ever leave a potmetal bearing in one of
> >> these machines? I have always had it replaced whether it needed it or not
> >> figuring that it is easier to do when its not siezed and it is an
> >> inevitablity so why not replace it with a brass one... Am I missing
> >> something?
> >>
> >> Sent from my iPhone
> >>
> >> On Jul 8, 2011, at 11:42 PM, Rich<rich-m...@octoxol.com> wrote:
> >>
> >>> Potmetal continues to grow until it just crumbles. Reaming is a temporary
> >>> fix. As someone else pointed out the bearing has probably been lubed with
> >>> 3 in 1 in the red can which is a pure mineral oil with no rust or
> >>> oxidation inhibitors and just soaking with Kroil will usually get it
> >>> going again. Not all potmetal of that period is defective. Oxidized 3 in
> >>> 1 is a powerful adhesive though.
> >>>
> >>> On 07/08/2011 08:31 PM, Steven Medved wrote:
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> If I remember correctly the home and triumph pot metal bearings are
> >>>> thick, I would think if the shaft could be removed the bearing could be
> >>>> reamed out to the correct size and it could be used. Has anyone ever
> >>>> tried this? Steve
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