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Converting an Iambic Bencher to Single Lever Operation

Created by Paul Signorelli, W0RW on 2021-12-30

 

 Converting an Iambic Bencher to Single Lever Operation

 

If you have never tried a single lever paddle, try converting your old Iambic Bencher to a Single Lever key.


I did a conversion to my old Bencher and it works well.
There are only 2 steps...


1. Cut a piece of solid plastic tubing 1/8 inch in diameter, about 5/16 inch long.
This becomes a spacer that goes in between the two paddles.

 

2. Place the tubing in between the paddles and insert a piece of solid wire (Use an old 1/4W Carbon Comp Resistor lead, 0.025 in. diameter) through the closest rivet hole on the paddle, through the spacer and then through the other paddle rivet hole.
Bend the resistor lead ends over. This forms a spacer that will mechanically disable the iambic operation.
Try it out.

That's it...


If you want to obtain finer adjustment of the spring system, you can add a spring tensioner to the Bencher.


Drill a hole in the rear spring post and insert a long screw that hooks the spring with a "J" hook.
The new adjustment screw hooks the spring and allows adjustment of the spring tension by moving the spring back and forth.

 


Paul w0rw

 

 

VA7CPC2022-04-30
Converting an Iambic Bencher to Single Lever Operation
[quote]
Drill a hole in the rear spring post and insert a long screw that hooks the spring with a "J" hook.
The new adjustment screw hooks the spring and allows adjustment of the spring tension by moving the spring back and forth.[/quote]

A diagram or photo would be useful.
W0RW2022-01-31
Re: Converting an Iambic Bencher to Single Lever Operation
Try it out and give me your feedback.
Paul w0rw
Reply to a comment by : K8DO on 2022-01-26

imho I am thinking it feels about like it looks.
K8DO2022-01-26
Converting an Iambic Bencher to Single Lever Operation
imho I am thinking it feels about like it looks.