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  #1  
Old 06-19-2022, 03:42 PM
whity1231$ whity1231$ is offline
 
Join Date: Dec 2020
Location: Eugene OR
Posts: 14
Default Stall warning switch

I think I am going to have to replace my stall warning switch. I canít get continuity between the two wires with the switch activated. Does anyone know what the voltage on the terminal wire is? I am only getting 10.6 volts? I am thinking it will be easier to take the wing off so that my old arms and hands can work in a more comfortable position up in the little access door. Any ideas appreciated.
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  #2  
Old 06-19-2022, 05:39 PM
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joedallas joedallas is offline
 
Join Date: May 2010
Location: Spring Hill Fl
Posts: 761
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I think you should have continuity between the two wires with the switch not activated.

Normally closed

Quote:
Originally Posted by whity1231$ View Post
I think I am going to have to replace my stall warning switch. I can’t get continuity between the two wires with the switch activated. Does anyone know what the voltage on the terminal wire is? I am only getting 10.6 volts? I am thinking it will be easier to take the wing off so that my old arms and hands can work in a more comfortable position up in the little access door. Any ideas appreciated.
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Last edited by joedallas : 06-19-2022 at 05:42 PM. Reason: Normally closed
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  #3  
Old 06-19-2022, 06:20 PM
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PaulvS PaulvS is offline
 
Join Date: Aug 2019
Location: Western Australia
Posts: 1,137
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The voltage on the sense wire to the stall warner switch from the module is not published as far as I know, but 10.6 volts doesn't seem bad. Vans support may know that technical detail specification.

There should be continuity between the switch "common" and "normally open" terminals when the vane is activated up.

The idea to take off the wing and place it upside down on some padded saw horses will make it easier to reach.

It will also help to have a large dental type inspection mirror and a LED work light to put inside.
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  #4  
Old 06-19-2022, 06:30 PM
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joedallas joedallas is offline
 
Join Date: May 2010
Location: Spring Hill Fl
Posts: 761
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Is your stall warning switch wired to your G3X or is it a buzzer?

My switch is grounded and goes open in a stall on my G3X discrete


Quote:
Originally Posted by whity1231$ View Post
I think I am going to have to replace my stall warning switch. I canít get continuity between the two wires with the switch activated. Does anyone know what the voltage on the terminal wire is? I am only getting 10.6 volts? I am thinking it will be easier to take the wing off so that my old arms and hands can work in a more comfortable position up in the little access door. Any ideas appreciated.
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Joe Dallas
Kit-#12400
www.joesrv12.com
www.EAA1298.com

Last edited by joedallas : 06-19-2022 at 06:33 PM.
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  #5  
Old 06-19-2022, 06:50 PM
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Tony_T Tony_T is offline
 
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Location: Lacey, WA
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On a plan's built E-LSA RV-12 with Dynon avionics the stall switch in the wing is wired normally open and when the vane is activated UP it closes the switch and grounds the sense wire.
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Last edited by Tony_T : 06-19-2022 at 07:00 PM.
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  #6  
Old 06-19-2022, 08:32 PM
Mich48041 Mich48041 is offline
 
Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,395
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Can you hear the switch click as the vane is moved up and down.
If not, the bracket might need to be adjusted. Two screws hold it to a rib.
The top screw hole is slotted. The bottom hole is round.
Loosen both screws one half turn to adjust the mounting bracket.
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  #7  
Old 06-19-2022, 09:14 PM
whity1231$ whity1231$ is offline
 
Join Date: Dec 2020
Location: Eugene OR
Posts: 14
Default Stall warning switch

Thanks for the replyís. It is the older Dynon 180. Buzzer with normally open.
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  #8  
Old 06-23-2022, 09:15 AM
JwWright57 JwWright57 is offline
 
Join Date: Dec 2016
Location: Charlotte, NC
Posts: 292
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Do you have the AOA feature installed? Iíve thought about just removing mine. Two buddies who are building a 7 and a Sonex didnít even install a stall warning switch.
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  #9  
Old 06-23-2022, 10:21 AM
whity1231$ whity1231$ is offline
 
Join Date: Dec 2020
Location: Eugene OR
Posts: 14
Default Stall warning switch

No I donít have a AoA installed. Would be a lot of work and expense to install on 2011 RV 12 with Dynon 180.
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  #10  
Old 06-23-2022, 12:27 PM
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DaleB DaleB is offline
 
Join Date: Sep 2012
Location: Omaha, NE (KMLE)
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Quote:
Originally Posted by whity1231$ View Post
No I donít have a AoA installed. Would be a lot of work and expense to install on 2011 RV 12 with Dynon 180.
Not at all. One rivet in the wing, one tube to the back of the D180. I did mine well before Van's came out with the kit to do the tubing through the wing connector with a quick disconnect; I used a twist lock fitting (Luer lock). Calibration of the D180 is pretty straightforward. We've been flying with AoA for several years now and like it a lot better than the stall warning vane and switch.
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