[TenTec] Encoder shaft stability
Charles P. Steinmetz
charles_steinmetz at lavabit.com
Tue Apr 13 22:36:55 PDT 2010
>I have two Jupiters of 2002 vintage and an OMNI 7. I removed the
>Adjustable Drag Bezel (and all associated hardware) completely on
>all three units and went to the heavy weighted Orion II Knob with
>optional Soft Rubber (traction) Ring
>My personal taste is to have the least drag on the Tuning Knob as
>possible--where I can literally spin it for fast frequency changes
>if/when desired. Whereas there is an electronic "Frequency Lock"
>Pushbutton on all three units--there is no need that I can see for
>any "drag" to prevent accidental frequency changes--even under (high
>vibration) mobile operating conditions.
I found that even with the drag components removed, the damping oil
in the encoder bearing of my RX340 made its action significantly
stiffer than I wanted, so I took the encoder apart and flushed out
the damping oil. I lubricated it with 10W30 Mobil 1. If I did it
over again, I'd use something just the merest touch more viscous than
that -- perhaps 60W racing oil. I think the 340 knob may be the same
"weighted aluminum" knob that is available for the transceivers. And
yes, it's appalling that the knob skirts are so far off center.
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