I'm making a laser spirograph for a school project. It requires speed control of three motors. I used a simple 555 astable circuit with a pot for control, then the output goes into the base of a power transistor to make a PWM ground. I had indicator lights for all of them, and when the motors are off, I get a got a good pulse, but when I turn the motors on, they just stay at the same speed no matter what I do, and the indicators go dim (parallel to motors with a resistor). I think it might be because its just sucking the power from the transistor or something, but I can't be sure. Any help or Ideas? Schematic: Note: There are three of these modules in the circuit. 
Transistor Package:
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