---------------------------------------------------------- Allegro-List Digest Archive --- Total Messages Posted Fri 01/11/08: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:34 AM - Stall Warning System (Hugh) ________________________________ Message 1 _____________________________________ Time: 07:34:12 AM PST US From: "Hugh" Subject: Allegro-List: Stall Warning System Gentlemen: While building my Allegro 2000 I never did get the electronic horn module and LED that mounts on and behind the instrument panel. I received everything else (pressure switch, special ASI, wing with pressure port, and all the necessary pneumatic tubing). I installed all of this on the plane hoping that I would eventually receive the electronic module. It never came. The assembly manual from Fantasy Air only had a simple diagram of the device (on page 127in my manual) showing how it is connected to the ASI and pressure switch. No other information written or otherwise was given. I have since been able to get some information As well as some photographs of this item. It looks to be very simple, so I have decided to simply build one myself and install it. The device consists of a 12V circuit board with 6 terminal connections, a two color (red/green) LED on lead wires that will go to the point on the panel where the LED will be mounted, two buzzers, a SPDT 12V relay, and a 697 ohm resistor, all being connected electrically to the special ASI and pneumatic pressure switch which is already installed in my aircraft. If any of you have this system in your aircraft, can you describe to me how your stall warning system actually works while on the ground and in flight (i.e. the sequence of visual and audible events that occur as you take off, land, approach stall speed, and when you reach stall speed? This will help me understand the logic of the system. I have heard from one person who has the system that his LED is red only, and not a two color (green-red) LED. If there is anyone out there that has additional information that would help me understand this system and how it works I would deeply appreciate the input. I don't want to go to the effort to build something that is not going to work. Hugh McKay Allegro 2000 912UL N661WW ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message allegro-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Allegro-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/allegro-list Browse Digests http://www.matronics.com/digest/allegro-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.