Capstan drive , motor and conventional belt, contrarotating different
size spindles, 1.89 and 2.09 mm. But FF/REW and spool take up is a
second, 2 wire motor, with no slip clutch, cog to cog to cog, reversible
via jockey swing-arm assembly . The first drive cog is different to all
I've ever seen with teeth about 3 times longer than usual, usual pitch.
Long teeth for some give/reduced noise?
There is a hall sensor under the (normal direction drive) take up spool,
is that used not just to sense a stop/jam but to give a variable feed to
the main motion motor. Even then it has to be more drive than exactly
required , by some degree, so does design allow for the motor to be used
as a sort of slip clutch, as a DC motor not precise stepper motor
Yamaha rare heavy ghetto blaster AST C10, 1989, otherwise just (just -
hah-hah, horrible topology puzzle to get there) needs the rubber bands
changing to silicone rubber bands ( futile exercise replacing with
contemporaneous neoprene bands and no known suppliers who state they
stock newly manufactured flat bands)