1926 Vibroplex Custom Ivory Key
I placed two small Vibroplex weights on the vertical uprights as shown in the picture below on this aluminum speed control. In this configuration the dot arm is balanced along its full length as the weight is distributed equally. The uprights are made of 1" nylon 8-32 threaded scews. Set up this way, the key produces such great code its every bit as good as machine generated.
This custom 1926 Vibroplex Original with Ivory finger pieces has a dot arm assembly taken off an earlier key around 1907. Those early Martin Vibroplex keys had much longer main springs than later keys. I equipped it with an aluminum speed control due to the keys light touch.
In the slow speed position, the speed control extends the end weight a considerable distance beyond the end of the key. The pendulum motion of the longer dot arm produces higher quality low speed dots and at the high speed position it distributes the weight more evenly across the dot arm. Which produces higher quality high speed dots.
Its a much better way to slow the dots down compared to using extra weights on the dot arm. If you simply pack the dot arm with weights to slow it down, it just makes the key clunky and awkward to send with.
This custom 1926 Vibroplex Original with Ivory finger pieces has a dot arm assembly taken off an earlier key around 1907. Those early Martin Vibroplex keys had much longer main springs than later keys. I equipped it with an aluminum speed control due to the keys light touch.
In the slow speed position, the speed control extends the end weight a considerable distance beyond the end of the key. The pendulum motion of the longer dot arm produces higher quality low speed dots and at the high speed position it distributes the weight more evenly across the dot arm. Which produces higher quality high speed dots.
Its a much better way to slow the dots down compared to using extra weights on the dot arm. If you simply pack the dot arm with weights to slow it down, it just makes the key clunky and awkward to send with.
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