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  #1  
Old 05-07-2023, 08:37 AM
jcbarker jcbarker is offline
 
Join Date: May 2005
Posts: 236
Default Stall warning. In or Out?

Just started the QB assy instructions. One of the first things is build and install the stall warning system. Hmm. Got me to thinking. Do I really need that? I didn't have one in my -8. Used AOA. I quickly discovered that I never looked at my airspeed indicator once I was below flap speed in the pattern.
Any other thoughts on this?
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Oceanside, OR
-8 Built 2010 Sold 2016
-14a QB ordered Aug 2021
-picked up emp kit May 2022
-Fuse complete 12/20/22
-Attaching emp fairings 12/26/22
-completed Canopy Frame 4/30/23
-Starting on QB wings 5/2/23
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  #2  
Old 05-07-2023, 08:49 AM
rocketman1988 rocketman1988 is offline
 
Join Date: Jun 2010
Location: Sunman, IN
Posts: 3,456
Default Dont

Donít install it; it isnít necessary, especially with aoa. In the first time you walk into that stall vane, youíll wish you hadnít installed it!
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  #3  
Old 05-07-2023, 09:29 AM
JDA_BTR JDA_BTR is offline
 
Join Date: Dec 2013
Location: Colorado Springs, CO
Posts: 1,561
Default

On the other hand I like mine. If I end up a bit high and slow it gently reminds me..... And when doing slow maneuvers at altitude same thing.... I did wire it into the G3X and didn't have a separate board or system for it.
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  #4  
Old 05-07-2023, 09:43 AM
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Ironflight Ironflight is offline
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Join Date: Jan 2005
Location: Dayton, NV
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Default

Quote:
Originally Posted by JDA_BTR View Post
On the other hand I like mine. If I end up a bit high and slow it gently reminds me..... And when doing slow maneuvers at altitude same thing.... I did wire it into the G3X and didn't have a separate board or system for it.
Just curious - do you have the AoA on the G3X installed and calibrated (and audio connected)?

I donít have stall warning vanes on any of my planes because I have AoA (with audio) - which is far better than a discrete ďyouíre about to stallĒ because it shows (and tells) you where you are in the AoA regime.

Paul
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  #5  
Old 05-07-2023, 09:51 AM
BobTurner BobTurner is offline
 
Join Date: Dec 2011
Location: Livermore, CA
Posts: 8,910
Default

I agree, you donít need the stall vane once your aoa is working and calibrated. I installed it anyway, just in case I had first flight(s) difficulties before the aoa was calibrated.
But also, I Ďtrust but verifyí - I would never deliberately make a landing approach without checking the airspeed indicator as well as the aoa.
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  #6  
Old 05-07-2023, 10:11 AM
JDA_BTR JDA_BTR is offline
 
Join Date: Dec 2013
Location: Colorado Springs, CO
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I don't hear audio from the AOA, but it is calibrated. I hear other G3X alerts. Maybe I'm missing out!
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  #7  
Old 05-07-2023, 10:39 AM
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dmattmul dmattmul is offline
 
Join Date: Dec 2015
Location: Spring Hill, FL
Posts: 766
Smile AOA

For me AOA with audio is the best VFR avionic tool I have. Being able to hear when you start to encroach on a stall is priceless. Trying to watch AOA I think would be distracting but then again I have never done this. If I don't hear a light beep on touch-down I know I was to fast. I also compare AOA to TAS and can tell exactly what my touchdown airspeed was. I know hours is not an indication of potential wear on our tires but at this point I would bet I will get well over 600 hours on a set of tires. Having the lowest controllable airspeed when landing I think a part of the equation. I have also found that if you smell rubber on touchdown, you were probably going too fast. AOA is also a great teaching aid for optimum landing speeds.

And no I did not install the stall warning vane. (Vans also will not let you delete this, if you've bent yours let me know, I have spares).
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  #8  
Old 05-07-2023, 11:33 AM
jcbarker jcbarker is offline
 
Join Date: May 2005
Posts: 236
Default Decision made

Thank you all for your input. I'm going with AOA only. I'm going to plug those holes with a couple of AN426AD3-3 rivets and move on.
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John B.
Oceanside, OR
-8 Built 2010 Sold 2016
-14a QB ordered Aug 2021
-picked up emp kit May 2022
-Fuse complete 12/20/22
-Attaching emp fairings 12/26/22
-completed Canopy Frame 4/30/23
-Starting on QB wings 5/2/23
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  #9  
Old 05-07-2023, 01:37 PM
David Paule David Paule is online now
 
Join Date: Dec 2009
Location: Boulder, CO
Posts: 5,702
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I'd say install it. It's a redundant single-point AOA warning.

Dave
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  #10  
Old 05-07-2023, 03:36 PM
georgemohr georgemohr is offline
 
Join Date: Aug 2021
Location: Ewing Township
Posts: 154
Default

We installed it, and the reason was that the early test flights wont have the AoA calibrated. That stall warner tho... she just works.
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