Hello John,
Your measurement was correct, sometimes they measure differently in different
places. There are several different styles of the rings, some are oxidized,
some are nickel plated. Some have two holes, some four. Some have two slots,
some are made like the common CHK rings which also came with two slots.
Steve
> From: [email protected]
> Date: Sun, 18 Aug 2013 12:55:02 -0700
> To: [email protected]
> Subject: Re: [Phono-L] Curious Diamond B problem
>
> I did, in 6 places
>
> On Aug 18, 2013, at 11:13 AM, Steven Medved <[email protected]> wrote:
>
> > John,
> >
> > Measure them in different places.
> >
> > Steve
> >
> >> Date: Sun, 18 Aug 2013 06:49:58 -0700
> >> From: [email protected]
> >> To: [email protected]
> >> Subject: Re: [Phono-L] Curious Diamond B problem
> >>
> >> Steve, the diameter of both the Diamond B and Diamond C compressions rings
> >> is 1.66. The inside diameter of the Diamond C body is 1.66. The inner
> >> diameter of the Diamond B body ranges up to1.6730, and is slightly
> >> inconsistent in circumference. So there is obvious enlargement there.
> >> John
> >>
> >>
> >>
> >>
> >> ________________________________
> >> From: Steven Medved <[email protected]>
> >> To: Antique Phonograph List <[email protected]>
> >> Sent: Sunday, August 18, 2013 5:26 AM
> >> Subject: Re: [Phono-L] Curious Diamond B problem
> >>
> >>
> >> Normally the Diamond B does not expand that much unless it was stored
> >> where temperatures varied over the years like an unheated attic where it
> >> got very cold in the winter and very hot in the summer. Pot metal
> >> reproducer on Vancouver Island in the Victoria area remain pristine due to
> >> the relative small variance in temperature.
> >>
> >> Edison compression rings vary in diameter from 1.59 to 1.69. If the
> >> largest ring you have will not thread I use Teflon tape because it will
> >> allow easy removal.
> >>
> >> With the Model R and S you have the opposite problem and need a smaller
> >> ring. That's Pot Metal Folks.
> >>
> >> Steve
> >>
> >>
> >>> Date: Sun, 18 Aug 2013 04:39:49 -0700
> >>> From: [email protected]
> >>> To: [email protected]
> >>> Subject: [Phono-L] Curious Diamond B problem
> >>>
> >>> Hello all
> >>> I have a Diamond B reproducer with a curious problem. I went to rebuild
> >>> it, and when I tried to unscrew the diaphragm retaining ring, it turned
> >>> but did not want to come out. Finally I eased it out by unscrewing while
> >>> working a small screwdriver blade under it to help push it outward. When
> >>> it came out, I noticed that it had Scotch tape wrapped around it. When I
> >>> removed the tape and went to screw it back into the reproducer, it fell
> >>> to the bottom of the reproducer body. The threads did not engage with the
> >>> body. I had another ring from a Diamond C and it did the same thing, but
> >>> both rings worked in the Diamond C. I thought they were two different
> >>> sized reproducer bodies, but apparently they are supposed to be the same
> >>> diameter.
> >>> A knowledgeable collector friend suggested that the pot metal body of the
> >>> Diamond B might have expanded. Has anyone else had this happen? What
> >>> would be a solution, other than shimming the ring again? Or is that THE
> >>> solution?
> >>> Thanks
> >>> John Robles
> >>> _______________________________________________
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> >>> http://phono-l.org
> >>
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