Wrong !

The linear speed is RPM/60*pi*D (D in meter), eventually *100 if it's
given in cm/s ; for a cassette it is 4,75 cm/s.
It is determnied by the little axis that tha tape is pinched to.



a écrit :
"The capstan is a passive device. The motor pulley diameter via the *pinch roller* determines the tape speed. The capstan wheel can be any size at all.

Peter Wieck
Melrose Park, PA "