---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Tue 05/20/08: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:38 AM - Re: RV-List Digest: 23 Msgs - 05/19/08 (Mick Muller) 2. 04:46 AM - Battery Problem (Denis Walsh) 3. 05:04 AM - Re: Battery problem (Chuck Jensen) 4. 07:15 AM - Re: Battery Problem (Ron Lee) 5. 09:14 AM - Re: Battery Problem (Tracy Crook) 6. 09:54 AM - Re: Mike Terpstra (J. Mcculley) 7. 12:57 PM - Re: Mike Terpstra (scott bilinski) 8. 01:58 PM - Re: Battery problem (Richard Seiders) 9. 03:03 PM - Battery problem solved, created a serious problem with KX125 (Charles Heathco) 10. 08:13 PM - Re: Battery Problem (Fiveonepw@aol.com) 11. 09:24 PM - Re: Current crop of pitot tubes (rleffler) ________________________________ Message 1 _____________________________________ Time: 01:38:04 AM PST US From: "Mick Muller" Subject: RV-List: Re: RV-List Digest: 23 Msgs - 05/19/08 Hello Electric buffs. I have a question that may appear stupid, but I'll take my chances. Below is a statement made by a lister recently: >Subject: Re: RV-List: Battery problem > >Other batteries work too. > >The problem with the odysseys is that the biggest one which fits inside the >battery box is only 18ah, and that is not big enough for my preference >(electric ignition, fuel pumps, and flight instruments). If I had electric ignition fuel pumps flight instruments etc that when running should use say 30 amps in total. If my alternator that was putting out 55Amp hours, why should I worry that the battery was not rated at 30 amps? The main task of the battery is to start the big fan at the front. Once that is running, the Alternator should be able to handle the entire load and then some. So the real question should be, what is my essential bus load , and how long do I want my battery to last b4 I need to get on the ground?? Wouldn't it make more sense to have two batteries rated at say 18 amp/hours each rather than a single battery rated at 35 amp hours?? Mick ________________________________ Message 2 _____________________________________ Time: 04:46:03 AM PST US From: Denis Walsh Subject: RV-List: Battery Problem Not a stupid question. Rather an excellent observation, and a good prompt for a discussion of battery needs for our RVs. First, you should check the subject to insure the readers respond . Most would probably contend that the primary role for the aircraft battery is to carry you to a safe landing in the event of an alternator failure. Secondary is the start. Therefore the 18 amp is good for start since it has a good cranking amperage; however could be marginal if you have a heavy essential load and a need to go quite a way if alternator fails. So the debate will rage on regarding the relative merits of a failure warning system, an essential bus, a backup battery/alternator, and or a bigger battery. A further consideration is a dedicated battery for ignition or EFIS. My current preference for my VFR RV is to have the odyssey but with magneto ignition and a light load which includes an internal battery for both GPS and EFIS. But if I had an automotive type powerplant with electric fuel feed. EEC, and ignition, I would feel different. On May 20, 2008, at 2:29 AM, Mick Muller wrote: > > Hello Electric buffs. I have a question that may appear stupid, but > I'll take my chances. > Below is a statement made by a lister recently: > >> Subject: Re: RV-List: Battery problem >> >> Other batteries work too. >> >> The problem with the odysseys is that the biggest one which fits >> inside the >> battery box is only 18ah, and that is not big enough for my >> preference >> (electric ignition, fuel pumps, and flight instruments). > > If I had electric ignition fuel pumps flight instruments etc that > when running should use say 30 amps in total. > > If my alternator that was putting out 55Amp hours, why should I > worry that the battery was not rated at 30 amps? The main task of > the battery is to start the big fan at the front. Once that is > running, the Alternator should be able to handle the entire load and > then some. So the real question should be, what is my essential bus > load , and how long do I want my battery to last b4 I need to get on > the ground?? Wouldn't it make more sense to have two batteries rated > at say 18 amp/hours each rather than a single battery rated at 35 > amp hours?? > Mick > > ________________________________ Message 3 _____________________________________ Time: 05:04:25 AM PST US Subject: RE: RV-List: Battery problem From: "Chuck Jensen" David, Unless you need the extra battery weight of a larger battery for W&B, as some canards do, why not install an E-Buss so you can shed load. The 18ah battery will last as long as a 30ah one if you shed load properly, and it will get you home equally as well, including IFR. But hey, if its a 'personal preference thing', load 'em up, you're entitled to whatever floats your boat, or anchors your airplane. Chuck Jensen -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com]On Behalf Of David Leonard Sent: Tuesday, May 20, 2008 1:35 AM Subject: Re: RV-List: Battery problem Other batteries work too. The problem with the odysseys is that the biggest one which fits inside the battery box is only 18ah, and that is not big enough for my preference (electric ignition, fuel pumps, and flight instruments). -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net On Mon, May 19, 2008 at 3:04 PM, Chuck Jensen < cjensen@dts9000.com> wrote: Odysseys work...why anguish over it. Chuck Jensen -----Original Message----- From: owner-rv-list-server@matronics.com [mailto: owner-rv-list-server@matronics.com]On Behalf Of David Leonard Sent: Monday, May 19, 2008 3:29 PM Subject: Re: RV-List: Battery problem With my electrically dependant ignition and avionics, I wanted to maximize the battery that will fit into the stock battery box. This is what I came up with, after hearing Someone else had good luck with panasonic sealed lead batteries: http://www.panasonic.com/industrial/battery/oem/images/pdf/Panasonic_VRLA _LC-R1233P.pdf it is 33 Amp.hr, deep cycle, and can be mounted in any position like the oddessey. In fact, the description seems very much like that of the oddessy batteries: http://www.panasonic.com/industrial/battery/oem/chem/seal/index.html Have used mine for a year now with great success. I paid about $110 for it. -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net ________________________________ Message 4 _____________________________________ Time: 07:15:13 AM PST US From: "Ron Lee" Subject: Re: RV-List: Battery Problem >>> The problem with the odysseys is that the biggest one which fits inside >>> the >>> battery box is only 18ah, and that is not big enough for my >>> preference >>> (electric ignition, fuel pumps, and flight instruments). This is INCORRECT. I have an Odyssey 925 in my RV-6A battery box and am ASSUMING that it is the stock battery box. You can get the dimensions of the 925 easily to see if it will fit. Ron Lee ________________________________ Message 5 _____________________________________ Time: 09:14:54 AM PST US From: "Tracy Crook" Subject: Re: RV-List: Battery Problem I used the Odessey 925 as well. I did have to turn it so the terminals were on the side to fit my stock RV-8 battery mount (not a problem for the battery as far as I know). My 'alternator out' battery drain is about 12 amps for all system in my 'all electric' rotary engine installation.. I can reduce that to about 9 amps by switching off non-essential stuff in a pinch. Tracy Crook On Tue, May 20, 2008 at 10:11 AM, Ron Lee wrote: > > The problem with the odysseys is that the biggest one which fits inside >>>> the >>> battery box is only 18ah, and that is not big enough for my >>>> preference >>> (electric ignition, fuel pumps, and flight instruments). >>>> >>> > This is INCORRECT. I have an Odyssey 925 in my RV-6A battery > box and am ASSUMING that it is the stock battery box. > > You can get the dimensions of the 925 easily to see if it will fit. > > Ron Lee > > ________________________________ Message 6 _____________________________________ Time: 09:54:23 AM PST US From: "J. Mcculley" Subject: Re: RV-List: Mike Terpstra Try www.411.com and input his address to get a phone number. --------------------------------------------------------------------- BRUCE GRAY wrote: > Hope someone can help. I breifly met Mike Terpstra in Yerrington, NV. > when he flew in to meet with his painter, his RV8 is to be painted in a > couple weeks. Anyway, I failed to get his # or anything because I now > have some questions for him and don't know how so reach him. I do have > an address but if someone out them knows him and I can get his e-mail or > something that would be great. > I'm working on an 8 myself and want to share some idea's. > > TIA, > > Bruce Gray > RV8 Fuse > Finishing, Wiring, & You name it! ---------------------------------------------------------------------------------- ________________________________ Message 7 _____________________________________ Time: 12:57:38 PM PST US From: scott bilinski Subject: Re: RV-List: Mike Terpstra I found him on line at Phonenumber.com. All the information is on line you just might have to put a few of the pieces together. Scott ----- Original Message ---- From: J. Mcculley Sent: Tuesday, May 20, 2008 9:50:05 AM Subject: Re: RV-List: Mike Terpstra Try www.411.com and input his address to get a phone number. --------------------------------------------------------------------- BRUCE GRAY wrote: > Hope someone can help. I breifly met Mike Terpstra in Yerrington, NV. > when he flew in to meet with his painter, his RV8 is to be painted in a > couple weeks. Anyway, I failed to get his # or anything because I now > have some questions for him and don't know how so reach him. I do have > an address but if someone out them knows him and I can get his e-mail or > something that would be great. > I'm working on an 8 myself and want to share some idea's. > > TIA, > > Bruce Gray > RV8 Fuse > Finishing, Wiring, & You name it! ---------------------------------------------------------------------------------- ________________________________ Message 8 _____________________________________ Time: 01:58:41 PM PST US From: Richard Seiders Subject: Re: RV-List: Battery problem Using the lawnmower battery for 550 hrs with no problems. I replace it every other year regardless of it appearing to be in good operating condition. Know of at least 3 other rv drivers doing the same. Dick At 04:03 PM 5/19/2008, you wrote: >Charles Heathco wrote: >>I have to replace batty, rg25xc now near $200. Ive been told that >>300 amp cold cranking lawntractor batty would serve just as well. >>Im not sure, anybody here have experience or knowledge about this? >I've a little tractor battery in my Grumman ...... which I switch >out with a core battery every annual. It's only 4 years old, and >since I don't document it ;-) I don't know how long the last one lasted!!! >Linn >do not archive >>Charlie Heathco >> >> >> >> >>href="http://www.matronics.com/Navigator?RV-List">http://www.matronics.com/Navigator?RV-List >> href="http://forums.matronics.com">http://forums.matronics.com >> >>href="http://www.matronics.com/contribution">http://www.matronics.com/contribution >> > > >http://www.matronics.com/Navigator?RV-List >http://www.matronics.com/contribution > >Checked by AVG. >5/20/2008 6:45 AM ________________________________ Message 9 _____________________________________ Time: 03:03:00 PM PST US From: "Charles Heathco" Subject: RV-List: Battery problem solved, created a serious problem with KX125 I found a 35ah batty SLA local (ub12350 by universal) and failed to note that pos and neg were reversed from the concord. Yes I put leads on wrong and of course it wounmlnt crank so i flipped on all the swts and blew 5 amp radio fuse and one other 5 amp havent found out what it drives yet. I got batty cables fixed and replaced fuses which blew again when turned on the radio. Anybody havave some experience with KX125 and have an idea what i might have done? Charlie Heathco ________________________________ Message 10 ____________________________________ Time: 08:13:18 PM PST US From: Fiveonepw@aol.com Subject: Re: RV-List: Battery Problem In a message dated 05/20/2008 6:49:40 AM Central Daylight Time, denis.walsh@comcast.net writes: Not a stupid question. Rather an excellent observation, and a good prompt for a discussion of battery needs for our RVs. >>> Discussion: One thing I think is often missed is that one should always consider their battery as a "reservoir" of energy, only capable of offering what it has on board. If the alternator goes Tango Uniform shortly after departure, reservoir is depleted somewhat from bringing the mighty Lycoming to life. And if extended cranking prior to departure were the case, (cold temps, hot starts, blown procedure, whatever...) reservoir just might be quite a bit lower than typical. Methinks it wise to consider remaining battery available based on general condition, plus most recent consumption & time recharging in the event of a failure... Mark **************Wondering what's for Dinner Tonight? Get new twists on family favorites at AOL Food. (http://food.aol.com/dinner-tonight?NCID=aolfod00030000000001) ________________________________ Message 11 ____________________________________ Time: 09:24:44 PM PST US Subject: RV-List: Re: Current crop of pitot tubes From: "rleffler" Warren just posted an update to his site. www.gretzaero.com NOTICE: Good News!! The heated Pitot tube part of Gretz Aero, LLC is pending a sale to a new owner! This transfer of this part of the business will take place very soon. It will not be long before the GA-1000 and the GA-500 are again available under a different ownership. I hope you will be content in waiting a short time until everything is back up and running. Thank you to all of you who have contacted me and want to purchase the GA-1000 or GA-500 and are waiting until it is in production again. I enjoy developing new aviation products. Selling the heated Pitot part of my business will allow me the time to bring some of my newest ideas into product. I fully expect to continue with the mounting bracket part of the business and continue to bring out new products for the aviation market. Very soon I will make an announcement on this website disclosing the name of the new owner and provider of the GA-1000 and GA-500. At that time I will give the contact information for the business where you can order these fine products Warren Gretz -------- Bob Leffler N410BL - Wings RV-10 #40684 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=184136#184136 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV-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/rv-list Browse Digests http://www.matronics.com/digest/rv-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.