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Airspeed indicator ?



 
 
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  #1  
Old August 2nd 15, 01:17 AM posted to rec.aviation.soaring
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Default Airspeed indicator ?

My airspeed indicator seems to have devolved a leak and pitot pressure is causing readings on the old uncompensated winter vario. When I blow on the pitot tube and disconnect the static line of the airspeed indictor you can hear air moving through the static line from the airspeed indicator.

Has anyone head of this before?

I'm guessing replacing the airspeed indicator is the solution.

Feedback would be great.

Nick
  #2  
Old August 2nd 15, 02:09 AM posted to rec.aviation.soaring
John Cochrane[_3_]
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Default Airspeed indicator ?

Yes. I had an ASI fail. Very prompt service from Winter.
John Cochrane
  #3  
Old August 2nd 15, 02:45 AM posted to rec.aviation.soaring
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Default Airspeed indicator ?

The diaphragm has failed, likely due to corrosion.
No owner fix applicable.
UH
  #4  
Old August 2nd 15, 03:36 AM posted to rec.aviation.soaring
Papa3[_2_]
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Default Airspeed indicator ?

Just sent my Fahrtmesser back to Winter. Very quick turnaround and reasonably painless. The instructions are on their Website. That's assuming of course you have a Winter ASI (which is in like 90% of the glass fleet).

P3
  #5  
Old August 2nd 15, 05:43 AM posted to rec.aviation.soaring
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Default Airspeed indicator ?

How fast was the turn around from winter?
  #6  
Old August 2nd 15, 07:05 AM posted to rec.aviation.soaring
Chris Rollings[_2_]
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Default Airspeed indicator ?

Does your glider perhaps have an old fashioned capsule total energy
compensation system on the mechanical vario? A leak in the diaphragm in
that would account for the symptoms you describe.

At 00:17 02 August 2015, wrote:
My airspeed indicator seems to have devolved a leak and pitot pressure

is
=
causing readings on the old uncompensated winter vario. When I blow on

the
=
pitot tube and disconnect the static line of the airspeed indictor you

can
=
hear air moving through the static line from the airspeed indicator.

Has anyone head of this before?=20

I'm guessing replacing the airspeed indicator is the solution.=20

Feedback would be great.=20

Nick


  #7  
Old August 2nd 15, 07:25 AM posted to rec.aviation.soaring
bumper[_4_]
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Default Airspeed indicator ?

On Saturday, August 1, 2015 at 6:45:36 PM UTC-7, wrote:
The diaphragm has failed, likely due to corrosion.
No owner fix applicable.
UH


Not legal of course, but a friend of a friend once repaired one, figured not much to lose, took it apart, bellows had a crack- cleaned, a little solder on the split. Worked fine.
  #8  
Old August 2nd 15, 02:32 PM posted to rec.aviation.soaring
JJ Sinclair[_2_]
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Posts: 359
Default Airspeed indicator ?

What glider are we talking about? I have an old (1revolution) ASI, with faded speed restrictions for LS 3a. I have checked it against my master ASI and it is working properly............How about $100 bucks?
JJ
 




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