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 Post subject: Home Suitcase machine- cylinder speeds up and slows down
PostPosted: Fri Nov 02, 2018 7:04 pm 
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Victor Jr
Joined: Sat Oct 22, 2016 2:52 pm
Posts: 8
I have a suitcase Home machine and the motor has been disassembled, cleaned and oiled, as well as the top works. The spring has not been inspect it but it does seem to run pretty strong and will allow me to play almost two cylinders. The issue I'm having is when I play a cylinder, the speed seems to vary throughout the 2-minute duration. It may be slow for about 30 seconds then speed up for 30 seconds then slow down a little bit, Etc...

I have inspected the governor and no springs or weights are loose and everything seems to be intact with the governor, including the screw on the opposite side of the disc that fastens the springs and weights to the shaft.

Even as I watch with the yolk and governor as the machine runs and the speeds seem to switch up, I do not see anything drastically moving or happening to cause the varying speeds.

Any help on some things I may consider would be appreciated..

Thanks!


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 Post subject: Re: Home Suitcase machine- cylinder speeds up and slows down
PostPosted: Fri Nov 02, 2018 7:18 pm 
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Victor Monarch Special
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Who is John Galt?
Joined: Wed Jan 07, 2009 6:08 pm
Posts: 5470
Location: New York's Finger Lakes
This sounds like a sluggish mainspring. Remove, clean, regrease, and reinstall.

Good luck - -

George P.


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 Post subject: Re: Home Suitcase machine- cylinder speeds up and slows down
PostPosted: Fri Nov 02, 2018 7:34 pm 
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Victor Jr
Joined: Sat Oct 22, 2016 2:52 pm
Posts: 8
Got it.. thank you.. that would be the only thing i have not done as of yet..


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 Post subject: Re: Home Suitcase machine- cylinder speeds up and slows down
PostPosted: Fri Nov 02, 2018 9:31 pm 
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Victor Monarch Special
Stop for a visit when in Oregon.
Joined: Tue Feb 10, 2009 12:25 pm
Posts: 5732
Location: Albany, Oregon
If you've checked everything, I assume you've got a good belt. Jerry


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 Post subject: Re: Home Suitcase machine- cylinder speeds up and slows down
PostPosted: Sat Nov 03, 2018 11:24 am 
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Victor III
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I'm Getting Ready for my Mother In Law
Joined: Sat Feb 28, 2009 1:52 pm
Posts: 751
Location: the Adirondacks
I’m with George on te mainspring. Sometimes the grease turns to tar. ALSO: you should have a new drive belt (i sell them!), and also check to make sure your friction leathers are hard, and not spongy! Spongy leather compresses under full spring tension, then relaxes, which slows down the cylinder slowly as you play.
-Antique Phonograph Reproducer Restorer-
http://www.EdisonDiamondDisc.com
Taming Orthophonics Daily!


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 Post subject: Re: Home Suitcase machine- cylinder speeds up and slows down
PostPosted: Sun Nov 04, 2018 5:00 pm 
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Victor VI
Joined: Tue Mar 23, 2010 7:00 pm
Posts: 3437
Location: Western, WA State
Another thing to check is the governor. Make sure it spins freely. Also, check the bearings and end play.
Harvey Kravitz


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 Post subject: Re: Home Suitcase machine- cylinder speeds up and slows down
PostPosted: Tue Nov 06, 2018 6:45 pm 
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Victor Jr
Joined: Mon Sep 24, 2018 3:08 pm
Posts: 6
Just recently, I had a similar problem regarding my own "Suitcase Home" project. In my case, the speeding up / slowing down of the cylinder turned out to be caused by the tonearm carriage rod being slightly bent. Because of this, the pressure of the half nut to the feed screw increased towards the middle of its travel so much that it slowed down the spindle, gaining speed again while travelling further. Rotating the carriage rod by 90 degrees more or less solved the problem.


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 Post subject: Re: Home Suitcase machine- cylinder speeds up and slows down
PostPosted: Tue Nov 06, 2018 7:02 pm 
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Victor IV
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Joined: Tue Jan 10, 2012 3:41 pm
Posts: 1820
Location: Linden, NJ 07036
I’ve seen speed issues due to a damaged or broken speed control yoke or one that was stuck in place.

Rich Gordon


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