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 Post subject: Do Grafonola reproducer rings shrink?
PostPosted: Mon Jan 21, 2019 12:20 am 
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Victor III
I've got both kinds of music--classical & rag-time.
Joined: Fri Oct 06, 2017 11:39 am
Posts: 979
Location: South Carolina
Quick question for our COlumbia fans:

I'm restoring an Oxford BZ Phonograph. The machine is in nice shape overall, though quite unloved--but the tonearm came off a very much abused "junker," owned by an old guy who I suspect was a parts swapper with very little skill. (Cool guy though, good at fixing finishes on wood.)

Well I found the ring that holds the mica in the reproducer laying on the bottom of the case with a rotten envelope with Victor fiber needles.

I went to rebuild the Graf reproducer and the ring won't fit. Also, it acts like the rubber tubing is a little too big for it to fit comfortably. I am using Sitko's Grafonola rubber.

And how do I get that thing off the tonearm?


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 Post subject: Re: Do Grafonola reproducer rings shrink?
PostPosted: Mon Jan 21, 2019 6:17 pm 
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Victor VI
Joined: Tue Mar 23, 2010 7:00 pm
Posts: 3581
Location: Western, WA State
What ring are you talking about? There is a ring made pf plated spring steel that holds the mica and gaskets into the reproducer. That doesn't shrink. Do you think it was a home made one to replace the original that was lost? Pictures would help.
Harvey Kravitz


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 Post subject: Re: Do Grafonola reproducer rings shrink?
PostPosted: Mon Jan 21, 2019 6:46 pm 
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Victor III
I've got both kinds of music--classical & rag-time.
Joined: Fri Oct 06, 2017 11:39 am
Posts: 979
Location: South Carolina
Thanks, I didn't realize it was steel.

Now I'm worried that the reproducer body has swelled...I'll get pictures soon, but right now I am busy.

Victrola reproducers are so much simpler to fix.


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 Post subject: Re: Do Grafonola reproducer rings shrink?
PostPosted: Mon Jan 28, 2019 1:00 am 
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Victor III
I've got both kinds of music--classical & rag-time.
Joined: Fri Oct 06, 2017 11:39 am
Posts: 979
Location: South Carolina
And at this point it doesn't matter. The tonearm was the early drawn brass type, and the reproducer potmetal that had swelled to the point the ring wouldn't fit.

So the ring is rusted, the reproducer body swelled, and the tonearm (SURPRISE!) has a crack in it.

Any ideas what now?


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 Post subject: Re: Do Grafonola reproducer rings shrink?
PostPosted: Fri Feb 01, 2019 11:21 am 
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Victor Jr
Joined: Sun Oct 21, 2018 4:48 pm
Posts: 31
Like Harvey said, the ring (steel) won't shrink. However I do think that the reproducer body can swell. I have had two that the ring just falls out. Used clear silicone to hold all together. worked fine.

Tim


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 Post subject: Re: Do Grafonola reproducer rings shrink?
PostPosted: Sun Feb 03, 2019 3:24 pm 
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Victor III
I've got both kinds of music--classical & rag-time.
Joined: Fri Oct 06, 2017 11:39 am
Posts: 979
Location: South Carolina
Thanks, Tim. Once I solder up the tonearm again, I am going to have to put in a new needle bar (the old one was broken at the tip by previous owners harvesting mica) and then silicone this thing together and call it good.

I hate this Oxford phonograph...but then again, every phonograph I absolutely loathe during the repair process becomes an instant favorite when it plays a record for the first time.

Based on that logic, and the winning design looks of the BZ Hornless, I ought to find it a fun little machine for many years to come.


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