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View Full Version : Do it yourself cheap AOA Indicator



Dave S
11-23-2015, 06:23 PM
Curious if anyone has tried this AOA kit and had any experience. $60 seems pretty reasonable. Instructions seem to be straightforward. The mounting would need to be different on most Kitfoxes.

http://barkeraircraft.com/AOA_kit.html

Sincerely,

Dave S
KF 7 Trigear
912ULS Warp drive

airlina
11-24-2015, 09:20 AM
Hi Dave, I don't have this exact unit , but if you look up google Rite angle AOA you will see the one I have (basic model) . I won the unit years ago in a drawing at Sun n fun years ago , and since I was in the midst of my build, I installed it on my Series 5 . It works fine but there are flaws. Turbulence on final will affect the vane (mounted on my jury strut) and cause erratic outputs to the light bar. And slipping aggressively will give erroneous readings. I use it now and again when conditions are right , but do not rely on it for all flights. 60 bucks for the unit you are looking at is cheap-I think at the time mine was going for 400 bucks. Bruce N199CL

gregsgt
11-24-2015, 11:57 AM
I think that looks like a pretty neat setup and the price is right. I just don't know how I would mount the vane. My pitot tube wouldn't hold that.

GregA
11-24-2015, 02:03 PM
Even simpler to do it yourself if you have an EFIS. Mine is simply two quarter-inch aluminum tubes held together by some fiberglass that are plumbed into my Dynon D100. Pitot tube should face into the wind directly, AOA tube is below the pitot and cut at about a 45-degree angle (so that if you were climbing at 45 degrees, the opening would be directly into the wind). Exact angle doesn't matter, as you can calibrate it through the Dynon software. Cost was essentially zero as I had scrap pieces of tubing laying around.

Caveat: I don't know if/how this might work with other EFISes but worked perfectly with my D100.

Greg

gregsgt
11-24-2015, 04:07 PM
If I had the money for an efis I wouldn't be looking for a cheap AOA. :D

Paul Z
11-25-2015, 09:27 AM
I have an AOA indicator in my Advanced Flight System, I turned it off about a week into owning the plane. However yours might be better than mine, I have got to contend with *****in’ Betty screaming, on every landing and every take off:
Angle, Angle, Push, Push,
Angle, Angle, Push, Push,
Angle, Angle, Push, Push,
Angle, Angle, Push, Push,
Angle, Angle, Push, Push,
Angle, Angle, Push, Push,
Angle, Angle, Push, Push,
Angle, Angle, Push, Push, until I landed.
I never tried setting he correctly. When I replaced my AF3500 with a AF5600 she came alive from the Dead. I had to figure out how to turn her off again.

jiott
11-25-2015, 12:32 PM
Paul, I know what you mean, that "angle, angle, push" audio is next to useless- not much different than the typical old stall horn but more irritating.

I have the Dynon Skyview system AOA which has a much, much better audio alert. No ladies voice, just a slow beep that starts about 5 mph before stall and then the beep gets progressively faster as you get closer to stall, until it finally turns to a solid tone at impending stall. I love it because I can keep my eyes outside where they belong during landing and also get the full progressive AOA information in my ears in a non-irritating way. Since Dynon now owns Advanced Flight Systems, I wonder if there is a setting for your panel to give this kind of tone rather than '*****in Betty'.

kmach
11-25-2015, 06:52 PM
I agree, the Dynon progressive beeps work well, not irritating and gives useful info as you look outside.

Paul Z
11-25-2015, 06:53 PM
I consider mine useless. On take off, she start as soon as you rotate. I don't care what angle, what speed, she's screaming non stop. She so irritating she overrides the controllers. On landing it is exactly the same. If I'm descending she's screaming. One of these days I need to go up, and try to get her set, but it's not been a big priority.

jiott
11-25-2015, 09:52 PM
Paul, the AOA calibration process is very easy, takes hardly any time at all. Its done in flight, you enter the in-flight set-up mode, choose AOA calibration, follow instructions on-screen which has you do a few stalls in landing configuration (up at a safe altitude). That's it!

Paul Z
11-26-2015, 02:28 PM
I,ve printed it out that will be done soon. I wish I could do away with *****in Betty's voice.

Av8r3400
11-26-2015, 03:08 PM
On my Dynon (not yet flying) there is a provision to put a volume control on the audio output.

fastfred
08-24-2018, 08:48 AM
Can any one tell me how to adjust the volume on the AOA?

aviator79
08-24-2018, 09:33 AM
Hi Fred,

If I recall correctly, you have dual Dynon equipment. I would give Dynon a call and see if they can help you troubleshoot. As near as I can tell, there is not an independent volume adjustment for the audio alerts.

--Brian

fastfred
08-24-2018, 10:01 AM
I do have dual. I cannot hear the AOA beeps hardly at all so I thought maybe there was an adjustment . Maybe I Just don't it the stall attitude enough

Dorsal
08-24-2018, 01:01 PM
Do you have the audio from the Dynon plumed into your headset?

fastfred
08-24-2018, 01:14 PM
yes I can hear it but it is very faint.

Av8r3400
08-24-2018, 07:23 PM
Mine is quiet at max volume, too.

fastfred
08-24-2018, 07:25 PM
Dynon got back to me here is the solution.
Do it by following the menu sequence below:
SETUP MENU>SYSTEM SETUP>AUDIO SETUP>AOA VOLUME: (0% TO 100%)