Max-Gain Systems sells Bristol wrenches. https://mgs4u.com/#Bristol73,Gary K9GS
-------- Original message --------From: Donald Fox via Amps
<amps@contesting.com> Date: 8/4/21 8:48 AM (GMT-05:00) To: Amps Group
<amps@contesting.com> Subject: [Amps] 2K Classic X filament issues Good morning
Pete, et al:Pete, when you say clips, I assume you mean the small, removeable U
shaped clips that apply pressure to the socket fingers themselves? The sockets
in my Henry, are the tried and true Johnson 275s. The main portion of the pins
appear to be riveted in, so I don't think in can easily move them around. It's
interesting to note that Henry directly grounded the 3-500 grids, unlike
Heathkit, Kenwood, etc, who kept the grids slightly above RF ground with small
chokes. As I look at the socket pins, they look clean and what I would call
normal. I went ahead, and removed/inserted a tube in each socket 3/4 times, and
then left them in, and fired it up. There appears to be progress, as the
brightness of both now seems to be almost equal. The ZG tubes with their
graphite structure are a bit harder to judge, unlike the original Eimac design
where the top of the star shaped anode assembly is open.Along this journey,
I've discovered that the front 3-500 seems to have about 60-70% of air flow
that the rear one does. I'd sure like to figure that one out. Given the size
(and noise) of the blower, it's kind of surprising that the tubes stay in their
sockets, lol.Henry used those darned Bristol screws to secure the anode coolers
to the original Eimac's, and I can't seem to locate one to get them swapped
over. I'd love to get them out of there, and go back in with a normal machine
screw for ease of
service.Don_______________________________________________Amps mailing
listAmps@contesting.comhttp://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|