---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 01/08/12: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:47 AM - Z-12, Z-13/8 or a bit of both! (MikeDunlop) 2. 12:30 PM - Re: Z-12, Z-13/8 or a bit of both! (Robert L. Nuckolls, III) 3. 01:09 PM - Noise in damp weather (chinesespaceman) ________________________________ Message 1 _____________________________________ Time: 10:47:15 AM PST US Subject: AeroElectric-List: Z-12, Z-13/8 or a bit of both! From: "MikeDunlop" Initially I was going to use Z-12 for my Long-EZ system because it shows the LR-3 controller and I have the following: B&c LR-3 alternator controller B&C SD-8 and all the associated bits I'm using two Bendix mags Most probable going to use an auto alternator with the LR-3 (undecided on make as yet) then I was advised to use Z-13/8 (quite correctly) which shows the B&C SD-8 setup, so my question is would it be O.K. to use a mixture of both from Z-12 and Z-13/8. It would be helpful to find out any pitfalls before starting this project. Regards Mike (U.K.) Read this topic online here: http://forums.matronics.com/viewtopic.php?p=362749#362749 ________________________________ Message 2 _____________________________________ Time: 12:30:13 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Z-12, Z-13/8 or a bit of both! At 12:41 PM 1/8/2012, you wrote: > >Initially I was going to use Z-12 for my Long-EZ system because it >shows the LR-3 controller and I have the following: The z-figures are intended to show ARCHITECTURE. Parts are exemplar but not unique to that architecture. Why Z-12? The Z-13/8 was designed to max maximum use of the limited output of the SD-8 (no battery contactor). >B&c LR-3 alternator controller >B&C SD-8 and all the associated bits >I'm using two Bendix mags >Most probable going to use an auto alternator with the LR-3 >(undecided on make as yet) It needs to be an alternator compatible with external regulation. >then I was advised to use Z-13/8 (quite correctly) which shows the >B&C SD-8 setup, so my question is would it be O.K. to use a mixture >of both from Z-12 and Z-13/8. What features of 12 need to be incorporated into 13? The style of ignition systems is irrelevant to the discussion. >It would be helpful to find out any pitfalls before starting this project. I am certain that there have been dozens of 'variations on a theme' wherein items from various documents and architectures were cherry-picked and assembled into a new architecture. Most perform as advertised . . . assuming the 'chef' really understands the significance of the cherry-picking. Start with Z-13/8 and tell us what items depicted don't fit your planned suite of hardware. Bob . . . ________________________________ Message 3 _____________________________________ Time: 01:09:11 PM PST US Subject: AeroElectric-List: Noise in damp weather From: "chinesespaceman" Hi, I am hoping someone can give me some pointers in finding and eliminating a problem. I have a french built wooden aircraft with 0-200, B&C starter and 30Amp alternator. Narco radio and transponder with intercom. The intercom is wired with shielded wiring as per the manufacturers instructions. This aircraft uses a negative earth, with a switch that is cable actuated. The B&C Alternator is wired as per the manufacturers diagram, using a large capacitor on the DC Output. All of the lighting and as many earths as I could find have been wired independently to a "forest of earth" on the inside of the firewall, connected by a brass bolt to another earth forest on the engine side of the firewall. A heavy earth cable then runs from the 5/16" brass bolt to the engine. There is a skyflash strobe with strobe heads top and bottom of fuz. On most frequencies there is a sharp crack through the radio as ea ch strobe discharges. Never got to the bottom of this problem, despite various attempts. The few times, including today that I have been caught in rain or very damp weather and have put the nav and/or landing light on I am getting a loud buzz / shriek through the radio into the headsets. This is normally silent in dry weather. On finals today, the radio went dead, I thought a fuse had blown, so I switched it off. When landed and clear the active I switched it back on and it worked ok. I would appreciate any ideas on where to start looking for the source of this noise in the wet weather. There is never any noise from the mags or the alternator. Thanks Gavin Read this topic online here: http://forums.matronics.com/viewtopic.php?p=362765#362765 ------------------------------------------------------------------------------------- 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.