cassette motor

[skerdzius]

Hello, i ripped of a motor from old radio. http://allegro.pl/silnik-do-magnetofonu-9v-m34w-6c-9ld-i3053896796.html but i don't know for sure what kind of motor is it and how to control it. It has + - A B pins. i connected + - to 9 V DC and it spins at unknown speed, however i want to control it completely 

[David_AVD]

The A & B may or may not not be internally connected.  You can usually adjust the speed by a certain amount using the internal trim pot accessed via the small hole.  Make sure you insulate the screwdriver shaft though so you don't touch the pot to the motor case.