[GreenKeys] 35-KSR - 50Hz gears

[Jeffrey D Angus]

On 12/7/2014 1:57 AM, gfmurphy at earthlink.net wrote:
> One possibility you might consider is to use a governed motor in place
> of the synchronous motor.  The governed motor would turn at 3600 RPM
> and 'normal' 100 WPM gears could be used.  A suitable step-down
> transformer would be needed if the utility voltage is not 120 volts.
I have an equal but opposite situation here.
A Lorenz Lo15c.
220 volt 50 Hz operation at 66 WPM with a governed motor.
I use a step up transformer to get from 120 to 220 vac, then readjusted the
governed motor for the correct speed for 60 WPM.

To adjust the motor without the "correct*" strobe dots, I used a small rare-
earth magnet on the back with a coil pickup feeding a counter in the period
mode, then set the time interval correctly.

*correct in this case meant 66 WPM @ 50 Hz.


-- 
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com