Have you considered using a stepper motor (from an old floppy disk drive) instead of the DC motor. The output is AC, but even after the voltage drop of the rectifier you will probably get more DC than you are getting now.
Don
Have you considered using a stepper motor (from an old floppy disk drive) instead of the DC motor. The output is AC, but even after the voltage drop of the rectifier you will probably get more DC than you are getting now.
Don