[Hallicrafters] Hallicrafters SX-111

[Bill Gerhold]

Continuing on the SX-111. I forgot to mention, I had this problem with
another SX-111 and could not get the slippage to stop not matter how tight I
made the spring loaded friction disks or how clean they were.  I attributed
the problem to mechanical wear on the main dial disk.

I disassembled the friction assembly and made (2) very thin rubber disks,
the same size as the small disks and put them in there with the original
disks and clamped them down with the spring loaded nut.  I basically had a
rubber washer on both sides of the main tuning dial now.

This solved the slippage entirely but added a new dimension to the receiver.
I call it dial bounce, some other may call it backlash but you get used to
it.  What is happening, the thin rubber, is not stiff enough to hold its
shape as it gets mushed and un-mushed with the main fiber dial.  So, when
you stop turning the main tuning knob, the rubber disks tend to pull the
dial slightly.  I have gotten used to it and is not a real problem at all.
The pull is about 200-300 hz in my opinion.  But, it does stop the slipping
as long as the mech is clean.

K2WH