Jumpy needle

[Ludovic Launer]

Hi

I have a Winter vario, which is works OK, but I find the indication a little
jumpy...
The system is not leaking, but I'd just like to have slightly less "gust"
jumps and a smoother move of the needle.

In my ASW20 there used to be a restriction in the tubing and apparently it
did the job pretty well with the same type of vario.
Indeed, restriction in the tubing seems to be the way to go:
http://www.sagevariometers.com/sagehint.htm

But then my quesion is:
Where can I find a restriction (preferably France, or Europe) ?
Making one would be an alternative, but very tedious I guess (what's the
correct length ? diameter of the capillary, ...)

Has anyone successfully applied this solution and got a better/smoother
reading ?

Thanks for the info,
Ludovic

[Bob Salvo]

Hi Ludovic,

Take a short length of #22 insulated electrical wire and remove 50 mm of
insulation. Place this piece of insulation inside of a straight-through
section used to splice your tygon tubing. Use RTV to seal around the
outside of the insulation. This is now your capillary, which you should
place in the TE line that connects to the static side of vario.

Bob

"Ludovic Launer" > wrote in message
...
> Hi
>
> I have a Winter vario, which is works OK, but I find the indication a
little
> jumpy...
> The system is not leaking, but I'd just like to have slightly less "gust"
> jumps and a smoother move of the needle.
>
> In my ASW20 there used to be a restriction in the tubing and apparently it
> did the job pretty well with the same type of vario.
> Indeed, restriction in the tubing seems to be the way to go:
> http://www.sagevariometers.com/sagehint.htm
>
> But then my quesion is:
> Where can I find a restriction (preferably France, or Europe) ?
> Making one would be an alternative, but very tedious I guess (what's the
> correct length ? diameter of the capillary, ...)
>
> Has anyone successfully applied this solution and got a better/smoother
> reading ?
>
> Thanks for the info,
> Ludovic
>
>

[Alan Meyer]

"Ludovic Launer" > wrote in message
...
> Hi
>
> I have a Winter vario, which is works OK, but I find the indication a little
> jumpy...

Ludovic,

It would be very interesting to see if your thermalling
improves, gets worse, or is unchanged after removing
the quick response from the vario.

I have no trouble thermalling with my smooth acting
mechanical vario, but I think my "jumpy" electric vario
shows me more about the shape of the thermal I'm
in than my mechanical vario.

Alan

[Ludovic Launer]

Hi,


> It would be very interesting to see if your thermalling
> improves, gets worse, or is unchanged after removing
> the quick response from the vario.

Pilot "satisfaction" will be greater, thus making him happier + mode
confident in his instruments -> improvement !

> I have no trouble thermalling with my smooth acting
> mechanical vario, but I think my "jumpy" electric vario
> shows me more about the shape of the thermal I'm
> in than my mechanical vario.

You're right, and that's what I'm aiming at: a fast response electric vario
(which is OK as it is now), and a smoother mechanical vario.

Ludovic