[GreenKeys] 120 VPS tuning forks available

[Jeffrey D Angus]

On 9/1/2014 12:52 PM, gfmurphy at earthlink.net wrote:
> Simon is right in stating that the shuttered tuning fork can easily be
> replaced by modern electronics.  Alternately, an electronic tachometer
> could be built to show what the speed of the motor is and adjustments
> could be made using that information.
The Lorenz lo15c I have has a governed motor. And of course, it's got 
the dots and
and a light, and levers for adjustment.
For setting the machine at 66 WPM with a 50 Hz AC line supply.

Being as how I use it at 60 WPM and I have 60 Hz power, I used a 
inductive pick up
with a small rare earth magnet on the motor to set the speed correctly.
Crude, but VERY effective.

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