---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 06/24/09: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:40 AM - First choice alternator decision () 2. 09:10 AM - Re: First choice alternator decision (Wade Roe) 3. 11:20 AM - Battery Proximity and mounting (MLWynn@aol.com) ________________________________ Message 1 _____________________________________ Time: 04:40:25 AM PST US From: Subject: AeroElectric-List: First choice alternator decision 6/24/2009 Hello Wade, Will you have low voltage warning with the Plane Power installation? I would not be without a low voltage (battery not being charged) warning capability. 'OC' Says: "The best investment we can make is the effort to gather and understand knowledge." ============================================== Time: 07:13:44 AM PST US From: "Wade Roe" Subject: AeroElectric-List: First choice alternator decision Gentleman, This topic was touched on earlier but I'm still not sure which route is best regarding the primary alternator for my RV-7. I am interested in the best quality unit that will also coincide nicely with the AEC system designs (particulary Z-13/8). The options are as follows: --Plane Power 60A alternator with OV protection and internal regulation, or --B&C L-60 matched up with an LR3C-14. This will be an all electric IFR plane with one battery and SD-8 aux alternator. Any thoughts or comments would be appreciated. Thanks! Wade Roe EAA 557 Aeronca 7AC flying RV-7 in process ________________________________ Message 2 _____________________________________ Time: 09:10:51 AM PST US From: "Wade Roe" Subject: RE: AeroElectric-List: First choice alternator decision Thank you for the comments. The Plane Power unit has over voltage protection but no low voltage warning features. My plan would be to defer that task to the AEC9005-101 (low voltage monitor) that connects to the main buss per diagram Z-13 AEC. If main buss voltage drops I don't believe that there would be anything to blame other than the primary alternator. In this event, you get the bright yellow LV warning light on the panel and you're shutting down any unnecessary equipment to see if that will temporarily remedy the issue. My next move would be to bring up the aux alternator and e-buss...at least I think that would be the proper protocol. Wade Roe EAA 557 Aeronca 7AC flying RV-7 in process -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of bakerocb@cox.net Sent: Wednesday, June 24, 2009 6:37 AM Subject: AeroElectric-List: First choice alternator decision 6/24/2009 Hello Wade, Will you have low voltage warning with the Plane Power installation? I would not be without a low voltage (battery not being charged) warning capability. 'OC' Says: "The best investment we can make is the effort to gather and understand knowledge." ============================================== Time: 07:13:44 AM PST US From: "Wade Roe" Subject: AeroElectric-List: First choice alternator decision Gentleman, This topic was touched on earlier but I'm still not sure which route is best regarding the primary alternator for my RV-7. I am interested in the best quality unit that will also coincide nicely with the AEC system designs (particulary Z-13/8). The options are as follows: --Plane Power 60A alternator with OV protection and internal regulation, or --B&C L-60 matched up with an LR3C-14. This will be an all electric IFR plane with one battery and SD-8 aux alternator. Any thoughts or comments would be appreciated. Thanks! Wade Roe EAA 557 Aeronca 7AC flying RV-7 in process ________________________________ Message 3 _____________________________________ Time: 11:20:41 AM PST US From: MLWynn@aol.com Subject: AeroElectric-List: Battery Proximity and mounting Hi all, I am building an all-electric RV 8 with dual electronic ignition. I plan to use two P680 batteries. As I was sorting out where to put them, I had decided to strap them together and put them behind the firewall on the right. A building buddy asked the question, are they okay to be strapped together? Are there any failure modes where one might fail and take out the other out at the same time? I thought I would ask the same question to the list and/or Bob. I really like the "change one out every annual" approach described in the Aeroelectric book, which is why I am going with two identical batteries. The new and improved section on batteries does not describe explosion or melt-down as a likely failure of RG batteries so I had thought that mounting them together and in the inside of the plane would be okay. In retrospect, I can see that I should have built in the mounting system before I riveted on the front bottom skin. As is, I am still scratching my head about where exactly to put them and how to property secure them to the airframe. I am very open to suggestions. Regards, Michael Wynn RV 8 FWF San Ramon, CA **************Huge Savings on Popular Laptops only at Dell.com. 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