Electric Variometer reading backwards

I could be wrong, but I thought it only had two electrical wires attached to it when I looked behind the instrument panel. I didn't completely remove it though, so it is possible there was a pneumatic tube hiding back there as well. I will check that next time I visit the glider!

On Thursday, December 19, 2019 at 1:22:26 PM UTC-8, Eric Greenwell wrote:
Jonathan St. Cloud wrote on 12/19/2019 12:37 PM:
I have the S3 as my 3rd vario, it is a great vario. But do consider getting the UPS battery pack sold as an accessary, provides 8 hours of operation with audio if you loss ship's batteries .

How do you use 3 varios? Are the audio's going on all of them? Which one do you
believe?

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

It is next to cup holder, didn't you get one in your glider?

On Thursday, December 19, 2019 at 1:22:26 PM UTC-8, Eric Greenwell wrote:
Jonathan St. Cloud wrote on 12/19/2019 12:37 PM:
I have the S3 as my 3rd vario, it is a great vario. But do consider getting the UPS battery pack sold as an accessary, provides 8 hours of operation with audio if you loss ship's batteries .

How do you use 3 varios? Are the audio's going on all of them? Which one do you
believe?

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

If is is very gusty I switch audio to the Butterfly and I believe the blue dot, for normal soaring it is V80 saved with 9070, and on those days when the clouds are lying, and I can't seem to believe the varios I turn up the volume on the S3 and that that has never failed to work when nothing else does. Plus it literally would not fail when everything else does as it has an independent battery or ship power. I do like 2G's panel but I up set mine up to work if I lose the main bus, get to airport without batteries... Steam gauge ASI, and ALT.

On Thursday, December 19, 2019 at 11:50:58 AM UTC-5, Steve Leonard wrote:
Turn the meter over.

:-)

Steve Leonard

Fly inverted! ;-)

Uli
'AS'

I’d look for a restrictor in your pneumatic lines, they were used to slow down overactive various back in the day before we got good total energy probes. Another issue could be 3 various sharing one total energy input, a slight decrease in pressure seen in the first vario can cause a slight flow from the other various, in the opposite direction. Add a restrictor to this mess and you can get trapped pressures in the system. No more than 2 various should be sharing your total energy probe. I fly with a fairly fast electric vario with audio and a slow second vario, don’t feel I need any more.
Hope this helps,
JJ

Is the variometer integrated with the Computer or is it separate and connetced via a wire?

My old Zander SR940 had an separate Guage for the variometer and it was possible to reverse the polarity in the electrical wiring. That would result in the behavior you describe.

If it’s a Winter, it’s mechanical not electric. You have the TE and flask the wrong way around, don’t ask how I know......

On Friday, December 20, 2019 at 4:58:53 PM UTC-5, Per Carlin wrote:
Is the variometer integrated with the Computer or is it separate and connetced via a wire?

My old Zander SR940 had an separate Guage for the variometer and it was possible to reverse the polarity in the electrical wiring. That would result in the behavior you describe.

It is separate and from what I could see, it was connected by two electrical wires. These wires also seemed to have been (poorly) reconnected at some point by twisting the wires together and using electrical tape, so the reversed polarity seems very likely to me, especially after reading your post.

I'm still unsure of the vario model, but I confirmed the computer is a Zander SR 800. I think I will try swapping those two wires next chance I get (and soldering them properly while I'm at it).

Unfortunately, it seems I can't edit my original post, but since I've been corrected, I will say I was clearly mistaken -- it's definitely not a Winter vario; it is an electrical one connected to the computer.

Thank you all for your input so far -- I'll update once I get a chance to work on it again!