The Label on the motor reads:
ELECTRIC MOTOR
PART NO. 8-3A-683
24 TO 29 VOLTS D.C.
STANDARD THOMPSON
PART NO. 11A052
MFG. GLOBE INDUSTRIES INC.
DAYTON OHIO PAT. 2,479,455

The patent is from 1949 and is great for the components of the motor. But nothing I can find about the Specs.
Motor is 30mm Dia. x 45mm.
Brushed, there appears to be a wound coil in parallel with terminal.

Any ideas?

Thanks,
Mon

 

With a field coil in parallel with the brushes, it is a shunt wound DC motor. Not as strong on starting torque as a seies wound, but probably a more constant torque, I think that I recall. The speed is proportional to the voltage and probably fast. Try running it on 24 volts, although it will certainly run on 12 volts.

 

With a field coil in parallel with the brushes, it is a shunt wound DC motor. Not as strong on starting torque as a seies wound, but probably a more constant torque, I think that I recall. The speed is proportional to the voltage and probably fast. Try running it on 24 volts, although it will certainly run on 12 volts.

Yes very fast! but I don't have a strobe. Mostly just trying to figure torque, so I don't burn it out on the first try. It's the only one on hand at the moment.

 

The question now is what will be the application and what speed and torque does the application require, and what speed and torque can the motor deliver at perhaps 28 volts?

 

Motor is 30mm Dia. x 45mm.
Brushed, there appears to be a wound coil in parallel with terminal.

30mm dia is not a very large motor, check to see if it is purely shunt wound field, i.e. Short the terminals to the brushes and see if the resistance to turning the shaft increases.
If totally wound field, I would suspect the same voltage to the field as the armature on that small a motor.
Less field voltage = higher rpm, but lower torque.