gregvoth
0
I was gifted a Braun PCS 5 turntable (circa 1962), which came with a custom plinth and other nice updates. Unfortunately, when running here in the USA, at the 33-1/3rpm setting, it runs at 40.8rpm. I decided to make a sub-platter ring to increase it's diameter and slow the rotation. Over the past year of so I had a friend print ring halves in an effort to tweak the size for maximum speed reduction. It wasn't until I got my own 3d printer that I could finalize the parts needed. Because the Finder only prints 140mm x 140mm x 140mm, I had to split the design into quadrants and added an upper shelf to give it stability and a consistent height under the platter. The final effort, along with using 6 lb test monofilament as a thread belt instead of its original rubber belt, the speed reduced to 33.7rpm. My Well Tempered Turntable from 1990 runs at 32.8rpm, so I consider this a win... and close enough for radio!
You may notice that the headshell is a new Ortofon issue. When applying heat while soldering a lose cartridge wire in the original bakelite headshell, the heat caused one of the arm pins yo separate int it's 3 parts... Getting it back together was a job far to delicate for my large hands so I insisted the help of a tonearm making friend. He managed to transplant the headshell to arm pin assembly into the new Ortofon headship, which allows me to tweak newer cartridges into position more easily.
You may notice that the headshell is a new Ortofon issue. When applying heat while soldering a lose cartridge wire in the original bakelite headshell, the heat caused one of the arm pins yo separate int it's 3 parts... Getting it back together was a job far to delicate for my large hands so I insisted the help of a tonearm making friend. He managed to transplant the headshell to arm pin assembly into the new Ortofon headship, which allows me to tweak newer cartridges into position more easily.
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