AH, makes you want to get out the old check book and really order one RIGHT
AWAY ................
Walt K8CV Royal Oak, MI.
----- Original Message -----
From: <james.viars@comcast.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, April 14, 2010 11:08 AM
Subject: Re: [TenTec] Encoder shaft stability
Sounds good. All the dial shafts of my Jupiter have some sort of flex to
them: VFO, xit/rit, multi, etc...
I have tried a few different things to keep out the wobble, but to no
avail. The most annoying thing is that the tension on each smaller dial is
different. Actually, the PBT dial SQUEEKS!!
James
N4EGA
----- Original Message -----
From: "Phil Chambley Sr." <k4dpk@comcast.net>
To: tentec@contesting.com
Sent: Tuesday, April 13, 2010 7:23:53 PM GMT -05:00 US/Canada Eastern
Subject: [TenTec] Encoder shaft stability
I've been toying with an idea and would appreciate input from the group.
Haven't had any experience with the Orions yet, but every on other T/T rig
with an encoder, I've seen varying amounts of encoder shaft wobble. If you
lift up on the front of the knob, it'll move noticeably and irritatingly
(at least to me).
The reason for this is T/T relies on the encoder bushing alone to serve as
the only bearing surface, and that single-point bearing allows lateral
"wiggle". I think we can give the encoder a two-point support with just a
minimum amount of effort.
What I have in mind is a circular piece of say, 1/16" Teflon sheet, about
1 ½" diameter, with a ¼" hole in the center. Using a nibbler, cut out a
bite every ¼" or so from inside of the hole so small "fingers" would be
left to contact the shaft. This would encircle and hold the shaft and
still have only a minimum of surface contact area.
Then attach the Teflon disc under the knob to the plastic bezel using pins
or #2 machine screws. The latter would be placed outside the track of the
tension arrangement.
Comments please?? Better idea anyone?
Phil C. Sr.
k4dpk
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