---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 12/04/09: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:14 AM - Z19RB Engine Battery Buss Question (ZuluZephyr) 2. 05:39 AM - Re: Z19RB Engine Battery Buss Question (Robert L. Nuckolls, III) 3. 10:17 AM - Re: Z19RB Engine Battery Buss Question (ZuluZephyr) 4. 06:56 PM - Re: Hobbs Meter (jerb) 5. 07:03 PM - Re: Hobbs Meter (jerb) ________________________________ Message 1 _____________________________________ Time: 12:14:15 AM PST US Subject: AeroElectric-List: Z19RB Engine Battery Buss Question From: "ZuluZephyr" I am building a Sportsman with 2 batteries in the back behind a bulkhead (about a 10 to 12 foot run to the firewall). Z19 call for the always hot Engine Battery Buss (fuse block) to be within 6 inches of the battery. This would mean bringing about 10 hot wires forward to the panel from the buss. What would be the downside of mounting the Engine Battery Buss (and Main Battery Buss) near the panel and resizing the 2 hot wires from the battery to the buss and adding an ANL fuse to protect the wire other than the addition of the fuse? This would reduce the wire count for this run length. Thanks, Rocky Read this topic online here: http://forums.matronics.com/viewtopic.php?p=276125#276125 ________________________________ Message 2 _____________________________________ Time: 05:39:10 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Z19RB Engine Battery Buss Question At 02:10 AM 12/4/2009, you wrote: > >I am building a Sportsman with 2 batteries in the back behind a >bulkhead (about a 10 to 12 foot run to the firewall). > >Z19 call for the always hot Engine Battery Buss (fuse block) to be >within 6 inches of the battery. This would mean bringing about 10 >hot wires forward to the panel from the buss. That's a lot of items for a hot battery bus. What systems make up the 10 loads and what are their current requirements? >What would be the downside of mounting the Engine Battery Buss (and >Main Battery Buss) near the panel and resizing the 2 hot wires from >the battery to the buss and adding an ANL fuse to protect the wire >other than the addition of the fuse? This would reduce the wire >count for this run length. It's a crash-safety thing. We'd like for wires that are always hot to be breakered at 5A or less, fused at 7A or less. A battery buss feeder to a remotely mounted battery would not fit the design goals for contemporary TC aircraft. Bob . . . ________________________________ Message 3 _____________________________________ Time: 10:17:25 AM PST US Subject: AeroElectric-List: Re: Z19RB Engine Battery Buss Question From: "ZuluZephyr" The Engine and Main buss are basically duplicates with the following: 1. EFI 4a 2. ECU 1a 3. Pri Fuel Pump 7.5a 4. Sec Fuel Pump 7.5a (only one running except take off and landing) 5. Electric Constant Speed Prop 4.5a (9a peak) Thanks, Rocky Read this topic online here: http://forums.matronics.com/viewtopic.php?p=276195#276195 ________________________________ Message 4 _____________________________________ Time: 06:56:58 PM PST US From: jerb Subject: Re: AeroElectric-List: Hobbs Meter Hi Craig, It's time to rally the troops. I recalling in one of the recent (last couple years) aviation magazines of a vibration switch for use with a hobbs meter for the purpose you have addressed. If I recall it was around $12-$18. Any one recall seeing that. The Tiny Tach is another alternative - you have to get the correct model depending upon what engine type you have (single or double high voltage pulse per rev. The are dual function, Tach and engine hour meter - attach by wrapping a lead around the high voltage lead of one of the plugs. If your using it for tracking hours for oil change, you should use the tach hours if you have a recording tach, since that reflects actual engine operation hours. The hobbs were added by rental aircraft operators to base time for flight instruction. Second function was for recording PIC time for log books. jerb At 11:40 AM 12/3/2009, you wrote: > > >I am interested in changing how the Hobbs meter in my plane is wired >(it is currently wired to the radio master - not the best place for >it) and don't want to install an oil pressure switch. I know I read >in the EAA magazine many months back of alternative ways of doing >so, but can't find the article. > >What other ways have been done? I think the writer of the EAA >article used the field for the alternator. > >Any suggestions? > >Craig > > >Read this topic online here: > >http://forums.matronics.com/viewtopic.php?p=276010#276010 > > ________________________________ Message 5 _____________________________________ Time: 07:03:19 PM PST US From: jerb Subject: Re: AeroElectric-List: Hobbs Meter Check this link out. http://store.wagaero.com/product_info.php?products_id=12390 At 11:40 AM 12/3/2009, you wrote: > > >I am interested in changing how the Hobbs meter in my plane is wired >(it is currently wired to the radio master - not the best place for >it) and don't want to install an oil pressure switch. I know I read >in the EAA magazine many months back of alternative ways of doing >so, but can't find the article. > >What other ways have been done? I think the writer of the EAA >article used the field for the alternator. > >Any suggestions? > >Craig > > >Read this topic online here: > >http://forums.matronics.com/viewtopic.php?p=276010#276010 > > ------------------------------------------------------------------------------------- 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.