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Homemade tool for adjusting Edison DD rpm.
Posted: Wed Mar 18, 2020 7:18 pm
by marcapra
Occasionally someone asks how to adjust the speed on DD machines after they stopped putting speed controls on the motor board. My phonograph tech made a spanner wrench tool using a piece of scrap metal and a Dremel tool. This was for adjusting an Edisonic machine. On an Edisonic, the horn is very low, so there is ample room for your hand to get in there. On a pre-Edisonic DD machine, the horn is very high, so when I had to adjust the control for my Italian Umbrian IU-19, I bent the end 90 degrees for easier access. The metal piece we used is ⅜" wide. A little over ¼" was dremeled out from the middle. Now you can adjust the rpm on your Edison DD machines with ease.
Re: Homemade tool for adjusting Edison DD rpm.
Posted: Wed Mar 18, 2020 8:16 pm
by Phono-Phan
You gotta love the ingenuity of a tinkerer. This would be a good tool to have. I have made a number of one time use tools also.
Ken
Re: Homemade tool for adjusting Edison DD rpm.
Posted: Wed Mar 18, 2020 8:31 pm
by 52089
marcapra wrote:Occasionally someone asks how to adjust the speed on DD machines after they stopped putting speed controls on the motor board. My phonograph tech made a spanner wrench tool using a piece of scrap metal and a Dremel tool. This was for adjusting an Edisonic machine. On an Edisonic, the horn is very low, so there is ample room for your hand to get in there. On a pre-Edisonic DD machine, the horn is very high, so when I had to adjust the control for my Italian Umbrian IU-19, I bent the end 90 degrees for easier access. The metal piece we used is ⅜" wide. A little over ¼" was dremeled out from the middle. Now you can adjust the rpm on your Edison DD machines with ease.
Please consider making and selling a few of these. I have neither the scrap metal nor the tools to do this myself, so I would be happy to buy one.