[Phono-L] Amberola 30 erratic speed

[Robert Wright]

I'd check for rust, corrosion, or damage to the feedscrew.


----- Original Message ----- 
From: "Ron L'Herault" <lherault at bu.edu>
To: "'Antique Phonograph List'" <phono-l at oldcrank.org>; 
<phonolist at yahoogroups.com>
Sent: Monday, September 01, 2008 11:50 AM
Subject: [Phono-L] Amberola 30 erratic speed


> OK, gang, it is time to tap into the lists' wisdom.  I'm working on an
> Amberola 30.  The hook came unsoldered and the reproducer needed a 
> rebuild.
> Those two easy repairs (the spring was in the case)completed, I tested the
> phonograph and found that the speed is a bit erratic. It will sound nice,
> then slow just a bit then return to speed for a while only to slow again.
> The carriage moves easily and the horn bobbles and rotates as it should.
> The governor is lubricated and the pad has been oiled.  There is no 
> evidence
> of crud or damage to the governor disk.  There were a few teeth on the 
> large
> hear that had a bit of damage but a bit of judicious filing has cured the
> noise the damage created, and besides, the speed variation is more random
> than the cycle of the gear noise.  I'm thinking that the mainspring may 
> need
> to be removed, cleaned and re-lubricated but I thought I might see if 
> there
> is anything else I missed before tearing it apart.
>
> Thanks,
>
> Ron L
>
>
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