Sony TC-666D 50hz - 60hz Conversion Ring

This fits over the 50hz pulley to convert a Sony TC-666D meant for use with 50hz power grids for use with 60hz power grids such as in the United States. Place with ridge facing the 50hz pulley.

I recommend Nylon as a material, but make sure you print with as tight of a tolerance as possible as the diameter directly impacts the speed of the tape.

If you complete the conversion procedure and still have a speed issue, It is likely due to aging motor capacitors.

!!! Note that this only corr