It moves the heads in an arc around the rack and
pinion as a pivot
point. The engagement of the pinion does not seem to be adjustable. The
That somewhat suprises me, given that you need very little backlash in
this mechanism.
I;ve still not dug out either of my STs to see if they have this type of
drive. It sounds a horrible design, sure, but morbid curiousity means I
want to actually see one...
motor can be rotated but not shifted radially as far
as I can see. Also
Rotating the motor is for the head radial alignmet. The rotor, and thus
the pinion, osition si held relative to the stator (motor body) when the
thing is at a particular posituon, so rotating the whole motor will move
the heads back and forth. That's quite a normal way of doing it (on all
types of drive).
the track 0 sensor is adjustable.
Again, this is quite standard.
-tony