Turntable motor options (DIY)

[Retei]

Hey

I'm in the process of trying to piece together a DIY turntable (as in i buy all the assembled parts and just put it together). I've gotten most of it figured out, but I'm having trouble with the motor. I am sensitive to pitch change so speed drift is an absolute no go for me... To me my options are as follows:

• Buy an origin live kit (bad reviews?) or a different motor kit, and hope for the best in terms of speed stability
• Buy a project rpm 9 motor or similar and look into speed controllers
• Buy the 24v rega kit with a neo psu
• The Sota eclipse set with the tachometer (redicolously expensive because of import fees, and does it even work in the EU?)

Ideally i get something like the Sota with a tachometer but it seems like everything in europe is just DC motors with simple voltage regulators. Any ideas?

 

[jayme]

Build your own, with an Arduino + motor controller shield, some code, and a nice Brushless DC motor. I like the SimpleFOC code and shield, as it can deliver 3 phase sine waves.

Or check out some of the Technics motors and controller boards on ebay. Salvaged from older decks, those motors are quite good to use either as direct drive or to drive a belt.

 

[ralphfcooke]

If you go for a 2 or 3 phase synchronous AC motor, or a BLDC, then either of these will provide a first class controller.

https://www.diyaudio.com/community/...e-generator-for-turntable-motor-drive.298018/
or
https://www.diyaudio.com/community/...generator-for-synchronous-motor-drive.365849/

 

[Retei]

I have seen these threads... I was hoping to buy my way out of messing with circuit boards, as I will probably have to get a hold of my father (retired electrician) for advice on doing these.

 

[geoturbo]

You might want to look also at the Zeus Tt AC controller by Scobham who went commercial after a while. I am happy with his diy version with a 110VAC motor and 5Kg heavy platter.

 

[Retei]

Looked at his profile and he apparantly knows where to get these commercially. I'll send him a DM as soon as I'm off this moderator control thing (made this profile recently). Thanks for the tip geoturbo.

 

[es-hovertech-audiolab]

I have made some DIY speed-regulating motors, using microcomputer speed control, and the speed is very stable. However, the speed of the turntable, in addition to the motor, also depends on the accuracy of the turntable and bearings.