Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Jim, the motor you have will deliver dc volts, you have the meter on ac vots and digital meters give strange readings with dc on ac scale.
The motor should give 11 to 12 volts dc at 2500 rpm.
On your meter 20v dc would be good, from the off position 3 notches or scales turning to the right.