[Joe Johnson]

I have some data, not as solid as I might like, but at least I have something.

#1, I counted teeth and I concur with Paul Copioli's count.

#2, I clocked one transmission at 12 V, no load:
100 Revolutions in 49.5 Seconds = 2.0 Rev/Sec = 120 RPM Close enough to Paul's prediction of 132 RPM when you consider that the gears DO actually provide some load to the motor even if the output shaft of the motor is "free"

#3 Current things get murky because of my test set up.
I only had a power supply with a current out meter. Also, I only had aligator clip type jumpers to power the motor -- looking at the data, I think that these must have affected my data.

In theory, the resistance of the motor should be 0.081 Ohm.

Voltage Current A Current B 1 4
2 14
3 22 20 4 30 30 5 40 39 6 48 47 10 75 74 Slope 0.125 0.131
The slopes are much higher than .08 Ohms! I was disappointed but I think it is more a function of my test set up.

I do not have time to repeat the test with a better set up right now, but I think that we can fairly safely say that the motor AS SPECed is the motor AS SHIPPED.

Feel free to confirm my test with your own data. If you do, please share.

Joe J.