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Re: [Amps] Henry 8K Ultra Roller inductor repair question

Subject: Re: [Amps] Henry 8K Ultra Roller inductor repair question
Date: Tue, 17 Jan 2023 23:57:46 +0000
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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.

John Lyles

Message: 1
Date: Mon, 16 Jan 2023 22:03:15 +0100
From: <>
To: <>
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
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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