On Sunday, September 18, 2022 at 1:24:14 PM UTC-4, kevin anderson wrote:
> I have a friend that has sent several back to Winter to be rebuilt, but I do not know the cost of the work.
>
> Kevin
> 92
I had a 57mm overhauled & new case 2 years ago. Can't find the exact amount but it was cheaper than buying a replacement. I subsequently found someone selling a used one for about the same price but was happy to get mine back with new papers🤷‍♂️

On 9/18/2022 9:42 PM, Tony wrote:
> I had a 57mm overhauled & new case 2 years ago. Can't find the exact amount but it was cheaper than buying a replacement. I subsequently found someone selling a used one for about the same price but was happy to get mine back with new papers🤷‍♂️
>

And, as they say, we've had this same ax in our family for 5
generations. We've replaced the handle twice, and the head once, but
it's still the same ax. :-)

Meanwhile, we've apparently fixed the vario using the method UH
mentioned. Will report after testing it in flight.

Also, while the face glass was off the instrument, found that blowing
air (gently!) in the "up" direction (into the flask port) showed an
indication, but it did not respond to blowing in the "down" direction
(into the TE probe port). I interpret that to mean that the main air
space inside the instrument is on the TE probe side of the air flow
path. Thus, a leaky case would degrade the TE compensation, by mixing
it somewhat with "cabin static", but would not affect the operation
otherwise. It should still indicate almost-correct vertical speed
(whether ascending and descending) as long as the horizontal speed is
constant.

On 9/19/2022 9:13 AM, Moshe Braner wrote:
>
> Meanwhile, we've apparently fixed the vario using the method UH
> mentioned.  Will report after testing it in flight.

Worked fine in an actual flight. Yay!

On Monday, October 3, 2022 at 3:00:20 PM UTC-5, Moshe Braner wrote:
> On 9/19/2022 9:13 AM, Moshe Braner wrote:
> >
> > Meanwhile, we've apparently fixed the vario using the method UH
> > mentioned. Will report after testing it in flight.
> Worked fine in an actual flight. Yay!

On Monday, October 3, 2022 at 3:00:20 PM UTC-5, Moshe Braner wrote:
> On 9/19/2022 9:13 AM, Moshe Braner wrote:
> >
> > Meanwhile, we've apparently fixed the vario using the method UH
> > mentioned. Will report after testing it in flight.
> Worked fine in an actual flight. Yay!
I'm late in this conversation. Glad that this problem was fixed.

I put together some accumulated knowledge in my
pneumatic air line presentation you can find at
Http://aviation.derosaweb.net/presentations/#airlines

Let me know of any comments, additions, or dunder-headed corrections.

- John (OHM)