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[Skimmer Fan]

I have a buhler geared motor I think it came from a scrapped paper shredder on it it says 12 volts.
At 12 volts it rotates to quickly for what I want. At 6 volts it is just about right.
Does anybody know if there would be any problems running it at 6 volts, like draining the battery more quickly.

[morley bill 1]

Buhler motors are normally low drain I would/nt worry  you can put a meter on it and mesure the amps it draws     regards bill...

[roycv]

Hi morley bill  1.
The motor you have is a very good quality industrial type motor.
Running the motor on 6 volts will take less current than 12 volts.  You do not decide what current a motor takes.  It depends on the load the motor places on the circuit.
The motor is (loosely) like a variable resistance.  It will take most current when the motor spindle is held stationary with the battery connected.  ( best not to do this) When it is free running it will take the lowest current.

So if the motor is able to drive what you want on 6 volts that is fine.  If necessary it will run at much lower votages probably down to 2 volts, if you try this you will see it runs slower and cannot do as much work as running on a higher voltage.
Hope this helps,
regards Roy