Yes they are it's a two-phase motor but the two coils are probably internally connected to each other , otherwise you can use a two-phase powersupply to get rid of the motorvibration.
Sources for documentation/reading material/restoring/updating Vintage 16" transcription idlers?
- Thread starter MarcelNL
- Start date
I'l need to use some kind of powersupply anyway, as this machine has a mechanical speed reduction that is worn and replacements do not exist as far as I know at this point. Speed at 33 rpm is something like 33.6 rpm. The 33 rpm was never designed for records but only for cutting recordings in lacquer plates and playing them back.
Motorvibration is for now the least of my issues ;-)
I managed to get it running pretty silently by polishing the bearing races up to 10.000 grit and using new ball bearing balls
Motorvibration is for now the least of my issues ;-)
I managed to get it running pretty silently by polishing the bearing races up to 10.000 grit and using new ball bearing balls
Yes this mechanical reduction is a problem because it was made specifically that time , I have a Presto 64A were this is done with two motors and gear drive that works fine.
Vibration getting important as soon the arm gets in the picture.
Your welcome we have used the Presto at a hifi demo in Veldhoven years ago amazing sound with NRU tonearm with Ortofon A cartridge.