Static port location- consensus?

Jspey

Jspey

MEMBER
Moses Lake, WA
I've been through the various threads on the forum regarding various static port locations (or none at all) on different years and models of shortwings. My '54 PA22/20 has static ports on the pitot mast (the inverted "F"), as well as 2 ports 12" apart on the hellhole cover. Both locations have tubes connected to them, but I haven't followed them or experimented to see which one is hooked up.
Is there some sort of consensus about the best location?
 
Just got back from doing a static leak check. Found out that they are BOTH static sources are hooked up. Interesting.
 
The static ports in the belly didn't come out until around '56, so someone added them at some point. As long as the system works OK, I'd leave it alone.
 
We found the the static ports on the belly give the most accurate airspeed readings. Piper improved things over the years and seems those improvements worked like the many static port revisions and the double groove trim.
 
Steve Pierce said:
We found the the static ports on the belly give the most accurate airspeed readings. Piper improved things over the years and seems those improvements worked like the many static port revisions and the double groove trim.
Click to expand...

That’s why both are going in my Clipper!


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I was having issues with my static ports on my 55 PA-22 and found that some one ran tube to the back and poked a hole in the fabric for the port. What i did was bough two of these from spruce and in stalled them on the panel with the rotating beacon.Screenshot_20210806-051419_Brave.jpeg

Sent from my SM-N960U using ShortWingPipers.Org mobile app
 
The location for the static ports is in the belly in the fabric just aft of the baggage.
 
I was having issues with my static ports on my 55 PA-22 and found that some one ran tube to the back and poked a hole in the fabric for the port. What i did was bough two of these from spruce and in stalled them on the panel with the rotating beacon.
Click to expand...

Sounds like mine, with the exception of also being plumbed in parallel to the ports on the pitot mast.
 
NV Hunter said:
I was having issues with my static ports on my 55 PA-22 and found that some one ran tube to the back and poked a hole in the fabric for the port. What i did was bough two of these from spruce and in stalled them on the panel with the rotating beacon.View attachment 19521

Sent from my SM-N960U using ShortWingPipers.Org mobile app
Click to expand...

It should be in the fabric just forward of the access panel, forget off hand what station number, but definitely forward of that panel.


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That's where mine is...Just Forward of the hellhole door. I spent time hooking mine up/restoring function, after some period of being disconnected. It stabilized my Airspeed indicator, which used to jump around.
 
Our 1952 Pacer had the static port located on the right side of the boot cowl. Seemed to work fine and easy to get to. Cub Crafters locates theirs on the left side of the boot cowl.
 
I have a question about the later model static port(s) from the factory. It seems to use this part just pressed up against the inside of the belly fabric:
https://www.univair.com/piper/parts/14495-000-piper-plate/

My A&P and I are testing the static lines, and every piece of the line checks out fine except this junction. How is this sealed? It seems air is always able to enter the system between the fabric and the plate. It's like it needs some kind of glue or sealant.

thanks
 
Mine were just pressed up against the fabric, and I have just replaced the fabric and used some new seam to ensue they don’t ‘flap in the breeze’ . I used a fuselage envelope so had to crawl inside to move them around so they were flush as they must have got knocked around at some stage. That wouldn’t have been a problem if I had used fabric off the role as I would have had access as it would have been the first section that was covered. The old fabric was repaired many times around the ports and I wonder how effective it was with all the tapes and patches around it. I hope my method works.
 
The static port should be glued to the fabric. Stick a hole through the fabric with a pin.
 
Do you want the static pressure read from inside the fuselage or outside. Piper glued the static port to the fabric like a Cessna has it riveted to the skin. No shop manual for a Pacer/Tri-Pacer.
 
f11d2494c7bcba0fa4f4d476363d9bcb.jpg

b229556f013cb91e3a6de704292b102d.jpg

da6390e01c44d4bce73f89e8b059cb7d.jpg

787a6fc1f327be57c4a99a15ed525fb9.jpg

I believe using a couple screws if your stingers are fir would work as well.


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Static ports are part of the type design. Moving them could have an appreciable effect on airworthiness si that drives it to a major alteration.
 
I'm not interested in changing the design. I just know mine aren't glued (anymore) and I think that's why i can't keep any vacuum on this leak test. What glue is called for?
 
I would use contact cement or Stewart glue. The solvent based glues that is used in other fabric systems will outgas and bubble the paint.
 
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