---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 09/09/21: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:11 PM - Re: Re: Z101 in an RV-10 (Charlie England) 2. 04:43 PM - Re: Z101 in an RV-10 (johnbright) ________________________________ Message 1 _____________________________________ Time: 02:11:40 PM PST US Subject: Re: AeroElectric-List: Re: Z101 in an RV-10 From: Charlie England Also, trim load is *very* intermittent (extremely low total energy use), and given that you can run one on a 9V transistor radio (remember those?) battery, I'd want to verify even the .5A per servo number. Same for comm; much lower continuous than when transmitting. And I can't imagine me running both fuel pumps at once for any reason, except TO/landing. If pressure drops, my technique would be switching pumps rather than adding one. On 9/8/2021 10:19 AM, Kelly McMullen wrote: > > > You don't need 3 trim servos. The pitch trim is all you need. You may > want aileron, but really neither rudder nor aileron is needed with an > autopilot. Once you get rudder fixed trim to fly straight and level in > trim, the forces for climb and descent are minimal. Especially since > you are planning on a yaw servo. Given your loads, you might want to > explore a 70 amp alternator..not a huge difference in cost, lets it > operate on lower percent of full load. Are you figuring nav lights and > strobes in your total? Probably under 3 amps if LED. > > On 9/8/2021 7:22 AM, A Lumley wrote: >> >> >> My calculations are definitely on the conservative side. I >> distributed the loads such that I could fly on the Aux bus and Engine >> busses alone in IMC if I were to lose the primary alternator or >> otherwise had to shut down the main bus. >> >> My aux bus looks like this: >> >> Pitot Heat (7 Amps) >> GTN 750 Xi GPS/NAV/COM (3.45 Amps) >> G3X PFD 1 (2 Amps) >> 3x GSA28 Autopilot Servos (1.5 Amps) >> 3x Trim Servos (1.5 Amps) >> GMA245 Audio Panel (1 Amp) >> GTX 45R Transponder (1 Amp) >> GEA24 (0.43 Amps) >> #1 ADAHRS (0.2 Amps) >> G5 Backup (0.2 Amps) >> GMC 507 Autopilot (0.2 Amps) >> #1 GMU11 (0.1 Amps) >> Annunciator Panel (0.1 Amps) >> Total: 18.7 Amps >> -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 2 _____________________________________ Time: 04:43:37 PM PST US Subject: AeroElectric-List: Re: Z101 in an RV-10 From: "johnbright" Re A Lumley RV-10 Electrical Schematic V1.0 from seventh post prior to this one. Voltage regulators... Grounds are redundant, should go to separate points, ref install manual, failure of one is benign and not discoverable in flight or preflight. I put physical inspection on annual check list. Voltage sense draws 22mA at 12.5V (LR3C-14, measured in off state), parasitic load on battery 1 AH in 45 hours. I put the one for the aux regulator on the engine bus, ref schematic in signature, folder 1). I'm curious what voltage setpoints have been chosen for the main and aux regulators. -------- John Bright, RV-6A, at FWF, O-360 Z-101 single batt dual alt SDS EM-5-F. john_s_bright@yahoo.com, Newport News, Va https://drive.google.com/folderview?id=1u6GeZo6pmBWsKykLNVQMvu4o1VEVyP4K Read this topic online here: http://forums.matronics.com/viewtopic.php?p=503113#503113 ------------------------------------------------------------------------------------- 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.