A few years back at a CASA contest I had a horrible problem with my Vision.
Suddenly the plane rolled hard to the right. After some frantic stick
movement is flew OK again, but when I got is back on the ground the ailerons
would suddenly go to full right with no stick movement. Only vigorous stick
twiddling would get it to work right, but every now and then it would go
back to full right. The problem was that there was dirt in the pot. Once I
realized what the problem was I twiddled the stick until the dirt finally
was worked out of it.
Too bad that the Visions are beginning to suffer from old age. They are
great trannys and I love mine.
Anker
----- Original Message -----
From: "Martin Brungard" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, July 03, 2001 9:53 AM
Subject: Re: [RCSE] Vison TX Problem
> I recently had problems with my Vision with respect to the unit not
> transmitting my inputs. I knew the radio was putting out RF since the
> reciever would go crazy if I turned off the tranny.
>
> I think I deciphered the problem as slight corrosion on the plug-in
contacts
> within the transmitter. Remember, these transmitters are on the order of
a
> decade old and they have probably been well used since they are very
capable
> tools. The years of exposure to the elements or just slightly moist air
> (its really moist here in FLA!) has probably developed a microscopic
> corrosion layer on some contacts in the radio.
>
> What I did was open up the unit and unplug and replug as many of the plugs
> as I could get to. I wasn't too interested in taking out all the boards
in
> the tranny. I also slightly pryed up the 2 PROMS on the boards, just to
> upset any corrosion accumulation. I guess if this doesn't work for you,
you
> may need to go ahead and remove all the boards so that you can unplug and
> replug all the plugs in the tranny.
>
> I hear that there is a spray that you can apply safely to electronics and
> achieve the same results. I would appreciate a post from anyone that has
> experience with these sprays. Especially if there is a spray out there
that
> will protect from future corrosion.
>
> This maintenance seemed to do the trick for me. My Vision is working
> properly now.
>
> While your in there, be sure to examine the insulation on the wires going
to
> your aileron pot. I posted a note here on this problem several months
ago.
> The insulation hardens and the underlying wire will fracture due to the
> repetitive movement. The aileron pot should be the first pot to exhibit
this
> problem since it is highly used and its movement is large.
>
> Good luck with your problems.
>
>
> Martin Brungard
> Tallahassee, FL
>
> "Meandering to a different drummer"
>
>
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