Re: [CAD_CAM_EDM_DRO] Re: How to determine Torque from these motor numbers?

> RPM was derived by placeing a "tag" of electrical tape on the shaft
> of the motor and letting it "slap" a piece of cardboard on every
> rotation. This was recorded via a microphone into my computer and
> then I analized the waveform with a sound editing software- 12
> waveform pulses (tape "slap") per second = 720RPM. very useful for
> determining pulserates of many types.. I primarily use this method
> for measureing paintball gun cycle rates. :)

Yes, that should be good. Model airplane guys use a similar method for
measuring engine rpm in the air by recording the exhaust note. You can
even determine the models speed.


Use the motors. I did see a motor somewhere, maybe ebay, that had
encoders installed on the front shaft. If the shaft is long enough you
could still install the coupler.

Greg