---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 07/07/22: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:50 AM - Fuel Pump (Neal George) 2. 12:20 PM - Re: Re: Thermocouples: grounded or ungrounded (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 07:50:02 AM PST US Subject: AeroElectric-List: Fuel Pump From: Neal George Mornin=99 James =93 When you have a minute to kill, pull the drawings for 653351-4 (or -4A1), p lease. I=99m looking for the travel requirement for the mixture lever. Meaning, does it need 2=9D of throw to go from stop to stop? The print may not detail that measurement =93 I can figure it from throw-an gle and lever length if necessary Neal George George Aviation 850-218-2939 ________________________________ Message 2 _____________________________________ Time: 12:20:25 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Thermocouples: grounded or ungrounded >The most important temperature readings will be of the stator. yeaaahhh . . . sort of. Temperature numbers of the stator stack adjacent to mounting bolts will be greatly influenced by heat transfer to the crankcase. We know that the stator failures are generally limited to one pole. How do the wires look on remaining poles? To precipitate this 'isolated' failure suggests a thermal runaway event where the resistance of copper rises with temperature which in turn, increases energy dissipated in the wires. I.e. a positive feedback for temperature excursion. To catch a pending failure suggest a need to monitor each winding . . . unless field experience shows that failures are concentrated. In any case, other temperatures around the system's components may be interesting data but I'm skeptical as to their ability to flag impending failure any one coil. Bob . . . Un impeachable logic: George Carlin asked, "If black boxes survive crashes, why don't they make the whole airplane out of that stuff?" ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-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/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-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.