Vacuum tube General Radio Strobotach works very well. And it is old
enough the it can be fixed when it quits. They show up on eBay routinely
and are useful for solving weird governor problems, among other things.
On 07/07/2011 11:09 AM, Steven Medved wrote:
I tried this, I had to count the times it hit my finger.
From: tom...@msn.com
To: phono-l@oldcrank.org
Date: Wed, 6 Jul 2011 14:58:30 -0500
Subject: Re: [Phono-L] cylinder speed tester
Please don't laugh, but I stick a small piece of paper under the edge of the
cylinder on the mandrel and use a stop watch and count how many times the
little piece of paper comes around. Just a little bit of basic math and you
can accurately adjust the speed of your machine.
I like to do things the hard way though.
Tom
-----Original Message-----
From: phono-l-boun...@oldcrank.org [mailto:phono-l-boun...@oldcrank.org] On
Behalf Of Norman Bruderhofer
Sent: Wednesday, July 06, 2011 12:42 PM
To: Antique Phonograph List
Subject: Re: [Phono-L] cylinder speed tester
Hi Mike,
You are certainly thinking of a laser techometer. These have become so
cheap, that I can recommend to anyone as a useful tool.
I bought my first one about five years ago for approx. $100, now they're
down to as low as $12. I have one of these cheapos too. It has the same
precision as my expensive one.
You may want to consider this one: http://cgi.ebay.com/150600097532
And you don't need a special reflective tape, plain white paper will
also work fine. Works also great with disc machines and modern turntables.
Best, Norman
On 06.07.2011 08:00, mdsor...@aol.com wrote:
Hello everyone,
Sometime about a year ago, there was discussion on phono-l about a way to
test cylinder speed using an electronic instrument that could be cheaply
found on ebay. Anyone remember what this was? I meant to buy one at the
time, but lost all of the information. Any help is appreciated!
Mike Sorter
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