I ran one of these for years. But before I could do it, I had to fix the servo. Once that is done, not only is it reliable, but the motor noise is reduced and the arm keeps up with the LP properly.
This is done by adding a timing constant to the servo that allows the motor to pick the right speed so its always on target.
The bigger problems are these:
* lack of precision in the track, some of which can be corrected by replacing the wheels with something more substantial.
* Mechanical resonance in the track, solved by damping compounds
* really poor bearings in the arm! They are cup and point, but not hard enough to hold up right.
* poor arm tube rigidity. I replaced mine with a carbon fibre wand...
* bearings above the plane of the LP (a common engineering bug to this day). This is solvable but would take some tinkering...
This is done by adding a timing constant to the servo that allows the motor to pick the right speed so its always on target.
The bigger problems are these:
* lack of precision in the track, some of which can be corrected by replacing the wheels with something more substantial.
* Mechanical resonance in the track, solved by damping compounds
* really poor bearings in the arm! They are cup and point, but not hard enough to hold up right.
* poor arm tube rigidity. I replaced mine with a carbon fibre wand...
* bearings above the plane of the LP (a common engineering bug to this day). This is solvable but would take some tinkering...