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02-20-2012, 04:22 PM
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Join Date: Jul 2010
Location: OSH WI
Posts: 16
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04-19-2012, 08:31 AM
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Join Date: Aug 2010
Location: Marshall TX (KASL)
Posts: 1,783
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I installed the AOA exactly as specified early in this thread - inflation needle, 1/8 inch tubing, disconnect at the wing, etc. I used some silicone to anchor it in the hole (reached in via the stall switch cover plate and smeared some on the inside as well.) Calibrated it in flight. WORKS GREAT!!! Besides the visual element on the screen you begin to get a slow beeping sound as you go below about 55 kts, that gets faster as you continue to increase the AOA (i.e. get any slower with power off). Great and easy mod!
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04-20-2012, 11:01 AM
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Join Date: Apr 2008
Location: Davenport, IA
Posts: 1,390
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Alternative AOA tubing source with free shipping. Late add....Drillspot sent the order to Grainger and the tubing was shipped from Grainger. Shipping was still free.
http://www.drillspot.com/products/52...ygon-r-_tubing
Last edited by MartySantic : 04-25-2012 at 01:44 PM.
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04-21-2012, 07:39 AM
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Join Date: Oct 2010
Location: Elkton, Md.
Posts: 1,654
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Quote:
Originally Posted by Mich48041
Bill,
I do not know if the probe needs to protrude or not. The way that I did it works. A flush port may or may not work. If you install the 15160 static port and it does not work out, there will be a 1/4" hole in the wing. You could try using a rivet like those installed on each side of the fuselage for the static system. The advantage of the inflating needle is its perfect size for connecting the 1/8" Tygon tubing. Another option is to cut the threads off from the needle so that it looks like a nail. There would not be much sticking out. But who knows if a flush probe will work? It is worth a try. You could always replace it. Nobody notices my AOA probe because it is slightly under the leading edge of the wing. When I want to show it off, I have to point out its location. A protruding probe is less likely to be filled with paint or wax.
As for the glue bead, I waited for the glue to thicken before applying so that it would not run. I spun the inflating needle in the hole to get a uniform glue bead. If I were to do it again, I would use a much smaller amount (one drop) of epoxy glue so that it would not show.
During construction I had installed extra plastic bushings in the wing ribs for future projects like this. The tubing can be pulled along with wires and share the same bushings if there is room. That should not be a problem unless the wires need more room for ventilation. I doubt that the wires get that warm though.
Joe Gores
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Just wondering if anyone has tried using the static port? This would make a nice, neat installation if it works.
__________________
Wag Aero Sport Trainer built,sold and wrecked
N588DF RV12 #336 built, sold and alive and well in New York
N73DF RV12 #244 built, sold and alive and well in Florida
N91 RV RV9 I wish I could say I built this one! Mark Santoleri hit the ball out of the park on this gem.
Currently restoring a 1978 Citabria GCBC
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04-25-2012, 09:46 AM
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Join Date: May 2008
Location: Friday Harbor, Wa
Posts: 300
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Refreshing previous post.
Has anybody tried using a rivet for an AOA probe? The idea is very tempting.
__________________
MRT890
120042 RV-12
N112XP
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04-25-2012, 10:37 AM
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Join Date: May 2007
Location: Bend, OR
Posts: 223
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Quote:
Originally Posted by Dave12
Just wondering if anyone has tried using the static port? This would make a nice, neat installation if it works.
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Isn't static pressure vs. pitot pressure IAS? A good static port should be designed to have the same pressure at all AOAs. I believe you need a third source that provides a dynamic difference with respect to the pitot when the AOA changes.
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04-25-2012, 11:55 AM
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Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,070
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I think that what Dave12 meant was to use a rivet for the AOA probe that is similar to the rivets used for the static ports. I think that using a rivet for an AOA probe is certainly worth a try.
Joe Gores
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04-25-2012, 12:58 PM
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Join Date: Oct 2010
Location: La Feria Texas
Posts: 3,822
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Well, you could always do as I did, this is the Dynon pitot/AOA installed in my 12 wing. Makes it look like a REAL airplane!
[IMG]  [/IMG]
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04-25-2012, 06:05 PM
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Join Date: Oct 2010
Location: Elkton, Md.
Posts: 1,654
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Quote:
Originally Posted by Mich48041
I think that what Dave12 meant was to use a rivet for the AOA probe that is similar to the rivets used for the static ports. I think that using a rivet for an AOA probe is certainly worth a try.
Joe Gores
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Thanks for reading my mind Joe.
__________________
Wag Aero Sport Trainer built,sold and wrecked
N588DF RV12 #336 built, sold and alive and well in New York
N73DF RV12 #244 built, sold and alive and well in Florida
N91 RV RV9 I wish I could say I built this one! Mark Santoleri hit the ball out of the park on this gem.
Currently restoring a 1978 Citabria GCBC
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05-06-2012, 01:46 PM
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Join Date: May 2008
Location: Friday Harbor, Wa
Posts: 300
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Rivet for AOA probe
Installed the tubing for an AOA probe and used an LP4-5 rivet for the probe. Positioned it per Joe Gores' recommendation. After calibration, performed power-off stall and landing. AOA functioned very well. Leading edge is clean, rivet looks like it belongs there.
__________________
MRT890
120042 RV-12
N112XP
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