---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Fri 06/23/17: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:01 PM - Re: Re: Stall Warner - switch problems (Ian Cook) ________________________________ Message 1 _____________________________________ Time: 02:01:03 PM PST US From: Ian Cook Subject: Re: Europa-List: Re: Stall Warner - switch problems Kelv, If you go onto the Radio Spares web page and search. Pt No. 317-443 there is a full tech description. Regards Ian Cook Sent from my iPad > On 20 Jun 2017, at 22:03, Kelvin Weston wrote: > > > Hi Bud and all > > Now I am really confused. I have fitted the Europa stall warning mod and switch but not yet used in anger. > > How is this switch designed to work? > > Is it normally closed and held open by pressure above a certain speed. > Or is it normally open and is closed by low pressure (vacuum), like a conventional Cessna stall warner, caused by the angle of the wing. > > The mod leaflet suggests it is operated by vacuum, but your description of it being on until above a certain speed suggests the first option. > The switch has a hose connection to both sides of what I assume is a diaphragm, so it is easy to connect incorrectly. > > If it is normally closed then does that result in the buzzer operating continually on the ground until above the stall speed? > I think that would eventually get to be a bit of a pain, especially during long holds on the ground. > > > Regards > > Kelv Weston > Kit 497 > kelv@kdweston.biz > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=470288#470288 > > > > > > > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-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/europa-list Browse Digests http://www.matronics.com/digest/europa-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.