Harald,
Whatever you use, do not use the nichrome metal stock. It is high
resistance for use in heater elements. It will get very hot from RF
current as well.
The best material is likely phosphor bronze strip. You can stack up
several pieces as well, to get more springiness. I don't have a source
for this, but metal supply companies should know.
73
John Lyles
K5PRO
Message: 1
Date: Mon, 16 Jan 2023 22:03:15 +0100
From: <lb2hg@mimer.no>
To: <amps@contesting.com>
Subject: [Amps] Henry 8K Ultra Roller inductor repair question
yesterday we concluded that the shaft hinges had most likely broken due
to
getting brittle or due to extensive vibration during the long truck
transport.
These hinges consist of a pair of a flat curved spring approx.
3/16?wide x
0.01? thick ?x 2 ? long fixed at each end of the shaft. We tried
replacing
them with the same size of flat brass however found it too soft and not
with
?enough spring back to ensure enough pressure/force on the wheel
against the
inductor tube wall.
My guess is that Nichrome (80?) ribbon (flat) material could be a
replacement, however I am not sure so I ask for your advice. Also I
hope you
can direct me to a source that sells it smaller quantities.
73 de LB2HG/AA4NX Harald
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