PTFE is poor structurally and tends to cold flow under stress.
I used a lot of it in induction heating generators, mainly for spacers.
73, Roger (K8RI)
On 6/10/2019 4:14 AM, Andy GD0TEP wrote:
I have nylon spacer bars in C1 & C2 in my commercial made GS35b amp, (4 in each
cap) and every one of them shows signs of heat stress (melting & burning) I'll swap
them out one day for PTFE, but haven't got there yet...
73
Andy
http://gd0tep.com
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of MU 4CX250B
Sent: 07 June 2019 22:53
To: amps@contesting.com
Subject: [Amps] Nylon in RF Tank Circuits
For decades I’ve avoided using nylon hardware in the vicinity of an RF
tank circuit because I believed nylon was prone to absorbing RF and
burning. I don’t know how or when I came to learn this information,
but now I’m wondering if I’m wrong. Normally I use brass hardware.
Had anyone else heard this caution?
Tnx,
Jim W8ZR
Sent from my iPhone
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Roger (K8RI)
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