pot metal = zinc die casting The problem has not gone away, just a
longer time to failure.
On 08/18/2013 07:26 AM, Steven Medved wrote:
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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