Help Needed - Victrola Motor Problem

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CDBPDX
Victor V
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Help Needed - Victrola Motor Problem

Post by CDBPDX »

I'm working on a single spring Victrola motor from a VV-50 portable phonograph.

The old spring was really weak so I installed a new spring from Ron Sitko. Even with the new spring, it doesn't always start by itself, it needs a little push to start spinning once the governor brake is released. Also, it doesn't take much effort to stop the spindle once it gets moving. Seems it should be strong and always start on it's own when the spring is wound up. It is a fairly simple motor, it should work. I replaced the governor end bushings thinking that might be the issue, but no change. I also closely examined the drive gear, spindle and governor spirals, the spindle gear that drives the governor, and they all look good. When the spring barrel is not installed, the spindle and governor spin very smoothly, with good momentum once it starts spinning. No drag is apparent there.

Any ideas??

See the issue on YouTube:

https://youtu.be/cZ5c6QQ5ZDI

Thanks! Cliff
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Cliff's Vintage Music Shoppe, Castle Rock, WA
http://www.youtube.com/watch?v=QIz_IpaVrW8

Bob
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Re: Help Needed - Victrola Motor Problem

Post by Bob »

Check to make sure the ball bearing is under the spindle.

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Victor V
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Re: Help Needed - Victrola Motor Problem

Post by CDBPDX »

Bob wrote:Check to make sure the ball bearing is under the spindle.
The ball bearing is there. Cliff
Cliff's Vintage Music Shoppe, Castle Rock, WA
http://www.youtube.com/watch?v=QIz_IpaVrW8

JerryVan
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Re: Help Needed - Victrola Motor Problem

Post by JerryVan »

What is the condition of the spiral gear on the spring barrel? Are the gear teeth faces flat and even, or are steps worn in them from many rears of wearing against the spindle shaft spiral? Those steps will drag down the motor.
Last edited by JerryVan on Wed Nov 25, 2015 3:17 pm, edited 1 time in total.

JerryVan
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Re: Help Needed - Victrola Motor Problem

Post by JerryVan »

JerryVan wrote:What is the condition of the spiral gear on the spring barrel? Are the gear teeth faces flat and even, or are steps worn in them from many rears of wearing against the spindle shaft spiral? Those steps will drag down motor.

Here's what I mean;
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CDBPDX
Victor V
Posts: 2005
Joined: Sun Feb 12, 2012 10:43 am
Personal Text: A Hobbyist Specializing in Sales and Repair of Spring Motor Phonographs
Location: Castle Rock, WA
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Re: Help Needed - Victrola Motor Problem

Post by CDBPDX »

JerryVan wrote:What is the condition of the spiral gear on the spring barrel? Are the gear teeth faces flat and even, or are steps worn in them from many rears of wearing against the spindle shaft spiral? Those steps will drag down motor.
So, you were using my drive gear as a model for the worn gear tooth drawing..??

Thanks! Cliff
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Cliff's Vintage Music Shoppe, Castle Rock, WA
http://www.youtube.com/watch?v=QIz_IpaVrW8

a12548
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Re: Help Needed - Victrola Motor Problem

Post by a12548 »

Kudos to Jerry..Spot on! I occasionally run into that phenomena...and never thought to look for that issue.

JerryVan
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Re: Help Needed - Victrola Motor Problem

Post by JerryVan »

Wow, I'm usually only right once a year! With the year almost gone, I was wondering when it would happen this year.

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