Probably not worth the effort.

Our TTY machines are designed to operate asynchronously and will work with motor speed differences of 5 to 10%.

At 60wpm, a data bit is 22ms and the machine only needs about 4 ms to make the mark/space decision.  So there can be some slop in the motor speed.

Have fun,

Duncan
K2OEQ

On 9/29/2025 3:29 PM, hwhall--- via GreenKeys wrote:
This seems like an opportunity for invention for someone. How hard would it be to build a device that reads the governed motor speed & can automatically adjust the motor for any speed desired? I've not worked with one but it sounds like they could be controlled by PWM since governor contacts opening & closing sound like a sort of PWM. 

(standing by to learn that this has already been tried & why if didn't work)

Wayne
WB4OGM
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