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  #1  
Old 09-27-2015, 04:14 AM
GregMac GregMac is offline
 
Join Date: Aug 2012
Location: Albany Western Australia
Posts: 54
Default Stall Warning Buzzer

Instead of running a hot wire out (and back if it's activated) to the wing switch for activating the stall warning buzzer, has anyone used a ground wire instead, or see any reason why that shouldn't be OK. Would allow just a short power wire from the bus bar to the buzzer. Cheers from Western Australia
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  #2  
Old 09-27-2015, 06:26 AM
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Jesse Jesse is offline
 
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Location: X35 - Ocala, FL
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That's what I always do, and I ground it locally by the switch.
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  #3  
Old 09-27-2015, 07:23 AM
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Carl Froehlich Carl Froehlich is offline
 
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Location: Dogwood Airpark (VA42)
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If you are planning to have one of the EFIS offerings most come with an AOA indication. The AOA fulfills the same function as the old school stall warning, while enhancing situational awareness.

I choose to not install the stock Van's stall warning. I filled the pre-punched holes when building the wing.

Carl
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  #4  
Old 09-27-2015, 09:47 AM
N427EF N427EF is offline
 
Join Date: Oct 2005
Posts: 1,516
Default Quite useful

As to wiring,
Jesse answered that and mine is the same as are most others I suspect.

Quote:
The AOA fulfills the same function as the old school stall warning
True but the "old stall warning" buzzer seems to find a more direct way into
my brain than something coming from a sea of digital clutter tucked inside
of an EFIS screen.

Approaching to land and keeping focus mostly outside the airplane, runway, windsock etc. with cross checks on airspeed, I personally find it difficult to
shift attention to an AOA.

Having the "old stall warning" buzzer telling me to push the nose forward
has been ingrained in my memory for 35 years of flying.

One more benefit, if the master is left on, you can lift the tab on the wing on the way out of the hangar and double check that it is off.
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  #5  
Old 09-27-2015, 09:54 AM
BobTurner BobTurner is offline
 
Join Date: Dec 2011
Location: Livermore, CA
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For the AOA to be useful for landing it is best to have an audio warning, which Dynon, GRT, maybe others have.
With good headphones I can barely hear the stock Radio Shack buzzer.
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  #6  
Old 09-27-2015, 01:08 PM
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rleffler rleffler is offline
 
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Location: Delaware, OH (KDLZ)
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Quote:
Originally Posted by BobTurner View Post
For the AOA to be useful for landing it is best to have an audio warning, which Dynon, GRT, maybe others have.
With good headphones I can barely hear the stock Radio Shack buzzer.
AFS AOA has Jenny Hickman talking in your ear telling you to "Push"
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  #7  
Old 09-27-2015, 01:23 PM
rightrudder rightrudder is offline
 
Join Date: Mar 2014
Location: Laguna Hills, CA
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Quote:
Originally Posted by Jesse View Post
... I ground it locally by the switch.
Me too. Simple, effective. My EFIS has the AOA indicator, but I like to have an audible buzzer. On my -9A, the buzzer is mounted on the top outboard surface of the left gear weldment...nicely out of the way, but unshrouded so I can hear it.

Also, you might consider a panel light too. The local flight school's Cherokees have this, and it works surprisingly well.
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Last edited by rightrudder : 09-27-2015 at 01:25 PM.
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  #8  
Old 09-28-2015, 04:21 AM
GregMac GregMac is offline
 
Join Date: Aug 2012
Location: Albany Western Australia
Posts: 54
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Thanks Jessi and all others for the replies, ground stall warning activation for me, this is the sought of "departing from the plans" I like......... One that doesn't put an extra week on the build ! Cheers from Western Australia
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