How to make these say 78rpm?

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vansteem78
Victor II
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How to make these say 78rpm?

Post by vansteem78 »

speed.JPG
speed 2.JPG
These are the speed regulators on the VV XII and VV XVI C. Now they both sound right to me so near 78rpm but how do you make them show that speed without changing the speed. I have fiddled with one in the past but still could not make it show 78rpm when it was 78rpm. Any easy way to describe and a fix? Easily understood by us who know little!

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Henry
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Re: How to make these say 78rpm?

Post by Henry »

I think you have to adjust the setting under the motorboard. Others familiar with this type can respond in detail.

It's easy on my XI-G. There's an adjustment screw in the center of the speed control knob. But the indicator disc plate just says "Fast" and "Slow," and there's only one number by the line markings, at "78."

vansteem78
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Re: How to make these say 78rpm?

Post by vansteem78 »

Thanks Henry, I have fiddled with these two and now seems correct. I put a piece of paper on the turntable and got 39 revolutions in 30 seconds so figure that equals 78rpm. My math teacher would be proud of me! ha ha
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85corvetteman
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Re: How to make these say 78rpm?

Post by 85corvetteman »

Mr Jerry B. posted a tutorial here on the forum back in May of 2018.
Yours may be the same type. You can use the search option on the forum to locate it. I can’t do links from my iPad.
Hope this helps,
Terry
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Victor Speed Adjustment
Victor Speed Adjustment

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Retrograde
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Re: How to make these say 78rpm?

Post by Retrograde »

printing out a strobe disc is very helpful and there's no guessing.

http://www.78rpm.com/rescat/strobe_info.htm

http://www.myvintagetv.com/strobe.htm

http://www.shellac.org/wams/wstrobe1.html

This is just scratching the surface (pun intended!) on what's out there for free.

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Henry
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Re: How to make these say 78rpm?

Post by Henry »

Here's the link to Jerry B.'s post on this topic: http://forum.talkingmachine.info/viewto ... ed+control

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AudioFeline
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Re: How to make these say 78rpm?

Post by AudioFeline »

The strobe disks work well if you have incandescent bulb lighting (not fluro or led lighting).
Digital laser tachometers can be bought cheaply from eBay/China.

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