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 Post subject: Need help with an Opera mechanism
PostPosted: Wed Oct 17, 2018 6:15 pm 
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Victor Monarch Special
Stop for a visit when in Oregon.
Joined: Tue Feb 10, 2009 12:25 pm
Posts: 5748
Location: Albany, Oregon
The mechanism in my Amberola 1-B is noisy. The growl emanates from the governor area. It's not a click, click, click like a cracked gear but a steady high speed growl. Any suggestions or help would be appreciated. I've tried a bit of good quality oil in the offending area but no help.

Thanks, Jerry Blais


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 Post subject: Re: Need help with an Opera mechanism
PostPosted: Wed Oct 17, 2018 11:19 pm 
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Victor IV
Joined: Tue Jan 21, 2014 12:55 am
Posts: 1952
Location: Eugene/ Springfield Oregon USA
Jerry, I've had those issues on Edisons and I found that offsetting the contact areas between two meshing straight cut gears diminished the growl substantially, e.g, instead of the gears contacting dead on where they mesh, offset them so that they make 50% or less contact with each other.

That noise is why modern automotive gears are angle cut, incidentally.


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 Post subject: Re: Need help with an Opera mechanism
PostPosted: Thu Oct 18, 2018 8:26 am 
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Victor IV
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"Did you ever stop to think that pleasure is a duty?" (Victor sales pamphlet)
Joined: Thu Jan 08, 2009 5:19 pm
Posts: 1312
You might also try carefully adjusting the governor shaft and meshing gear position while it's running under low mainspring power. Make sure the larger-head adjusting screws are up against the bearings, then loosen the top set screws and slowly turn the adjusting screws front-to-back or vice-versa while listening for any change in sound. I've found that there's quite a bit of play in the governor shaft position compared to some other models.
You'll need to adjust the speed control pointer after making any changes with the governor shaft position.
Bob
"Comparison is the thief of joy" Theodore Roosevelt


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 Post subject: Re: Need help with an Opera mechanism
PostPosted: Fri Oct 19, 2018 10:54 am 
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Victor III
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Richards Laboratories http://www.richardslaboratories.com producing high quality cylinder blanks
Joined: Fri Mar 25, 2011 11:28 pm
Posts: 755
Go to the auto parts store and pick up a can
of STP oil treatment.

Put a few drops on the noisy gears and listen
to what happens.

You will be amazed! :)

Chuck
"Sustained success depends on searching
for, and gaining, fundamental understanding"

-Bell System Credo


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 Post subject: Re: Need help with an Opera mechanism
PostPosted: Wed Oct 31, 2018 7:11 pm 
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Victor III
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Richards Laboratories http://www.richardslaboratories.com producing high quality cylinder blanks
Joined: Fri Mar 25, 2011 11:28 pm
Posts: 755
So did you try it?
"Sustained success depends on searching
for, and gaining, fundamental understanding"

-Bell System Credo


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 Post subject: Re: Need help with an Opera mechanism
PostPosted: Fri Nov 02, 2018 10:43 pm 
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Victor Monarch Special
Stop for a visit when in Oregon.
Joined: Tue Feb 10, 2009 12:25 pm
Posts: 5748
Location: Albany, Oregon
I apologize... I've been away from home a bit but have the best intentions of trying the suggestions. I've owned the machine a couple of years and other big Amberolas have made this one a lower priority.

You are so correct. This is no different than my mild criticism about the Spring Motor except I'm the guilty one! Jerry


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 Post subject: Re: Need help with an Opera mechanism
PostPosted: Wed Nov 07, 2018 12:21 am 
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Victor Monarch Special
Stop for a visit when in Oregon.
Joined: Tue Feb 10, 2009 12:25 pm
Posts: 5748
Location: Albany, Oregon
I tried lubricating with a little STP with no major but maybe some minor success. Thanks, Jerry


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