AeroElectric-List Digest Archive

Wed 03/24/10


Total Messages Posted: 23



Today's Message Index:
----------------------
 
     1. 02:58 AM - Batteries (Jef Vervoort)
     2. 03:11 AM - Re: Electrical surges in aircraft power supplies. (LINDA WALKER)
     3. 05:57 AM - Re: Getting the numbers (Kevin Boddicker)
     4. 07:45 AM - Re: Re: Electrical surges in aircraft power supplies. (Matt Prather)
     5. 08:05 AM - Re: Looking for a used PC680 battery (Speedy11@aol.com)
     6. 09:08 AM - Re: Looking for a used PC680 battery ()
     7. 11:06 AM - Re: Looking for a used PC680 battery (thomas sargent)
     8. 11:20 AM - Re: Re: Electrical surges in aircraft power supplies. (Robert L. Nuckolls, III)
     9. 11:24 AM - Re: Re: Looking for a used PC680 battery (Robert L. Nuckolls, III)
    10. 11:32 AM - Re: Batteries (Robert L. Nuckolls, III)
    11. 02:12 PM - Flap Motor lack of Oomph (jonlaury)
    12. 03:02 PM - Generic Ford Voltage Regulator (jonlaury)
    13. 04:01 PM - Re: Flap Motor lack of Oomph (Daniel Hooper)
    14. 04:57 PM - Re: Re: Electrical surges in aircraft power supplies. (Matt Prather)
    15. 05:43 PM - Electronic Circuit Breakers on your EFIS (marcausman)
    16. 06:23 PM - Alternative battery solutions (Speedy11@aol.com)
    17. 06:41 PM - Re: Flap Motor lack of Oomph (jonlaury)
    18. 07:13 PM - Re: Re: Flap Motor lack of Oomph (Daniel Hooper)
    19. 07:59 PM - Re: Electrical surges in aircraft power supplies. (marcausman)
    20. 08:44 PM - Re: Re: Electrical surges in aircraft power supplies. (Robert L. Nuckolls, III)
    21. 08:47 PM - Re: Generic Ford Voltage Regulator (Robert L. Nuckolls, III)
    22. 09:43 PM - Re: Alternative battery solutions (Kevin Klinefelter)
    23. 10:13 PM - Re: Looking for a used PC680 battery (Kevin Klinefelter)
 
 
 


Message 1


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    Time: 02:58:42 AM PST US
    From: "Jef Vervoort" <jef.vervoortw@telenet.be>
    Subject: Batteries
    In september 2007, some messages promoted the use of A123 Systems batteries. They should offer a substantial weight saving. Anybody heard of recent developments? Jef, 91031 wiring.


    Message 2


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    Time: 03:11:12 AM PST US
    From: "LINDA WALKER" <l.p@talk21.com>
    Subject: Re: Electrical surges in aircraft power supplies.
    Bob et al. I have been able to get my BMA Efis G4 Lite repaired. The fault may have been caused by a surge in the power supply line. Is there an accepted method to catch surges in our type of electrical systems? Any help much appreciated. Patrick C Elliott, England. Long-EZ, G-LGEZ.


    Message 3


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    Time: 05:57:48 AM PST US
    From: Kevin Boddicker <trumanst@neitel.net>
    Subject: Re: Getting the numbers
    Thanks Bob. I will report back. Kevin On Mar 23, 2010, at 8:07 AM, Robert L. Nuckolls, III wrote: > At 05:38 PM 3/22/2010, you wrote: <trumanst@neitel.net> > > Thanks for the offer. I have two. > > Good for you. Over the course of several seminars > my opening presentation was on DC power and the value > of knowing the numbers, I would query the class as > to how many folks did not possess at least one multi-meter > of reasonable accuracy (handy little analog > testers need not apply). Generally there were three > or four who would raise their hands. > > I immediately handed out meters from Harbor Freight. > The cost was trivial and it helped me emphasize > very early in the class that having some grasp > on the "size of things" was pretty important to > successful implementation of recipes for success. > > I will try to get some data on my next airport visit. > I will record some numbers and get back to you. Is there anything I should be aware of,or a certain protocol, before proceeding? > > Not a critical one . . . it's time consuming > to sit and watch the setup for the purpose > of plotting performance. Data points acquired are > pretty coarse. Just see what the "float" voltage > is after a couple of days. Then turn something on > to put drag a couple a.h. of energy out of the > battery. Hook the 1562 up and see if you can > catch a top-off voltage along with some sense > of time that it stays in the top-off mode. > > Speaking of data acquisition systems. There are > dozens of new players in the data logging business. > > <2769199.jpg> > > This USB interface voltage logger can be reviewed > at: > > http://www.microdaq.com/lascar/usb/el-usb-3.php > > It has 0-30 volt input range, sample rates from > 1 sec to 12 hours and a 1% overall accuracy. > I suspect it's resolution is much better than > 1% and may be as great at 0.1% of full scale > (10 bits) so for more exacting work, one might > be able to characterize a given instrument for > better performance in analysis of the data. > > At $75 its a pretty good value. Folks with a > curiosity about such things are encouraged > to investigate this market for themselves. > I've got several good tools for doing this task > but none that are so handy as this . . . I'll > probably decide that I just have to get one > pretty soon. > > By the way, if any of you own one of those > West Mountain Radio battery analyzers > > http://www.westmountainradio.com/CBA.htm > > They can be pressed into service as a > useful data logger/plotter. This curve > was gathered with just such a device. > > http://www.aeroelectric.com/Pictures/Curves/Battery_Tender_Recharge.pdf > > You set the thing up to "test" a battery > with say a 10 milliampere "load" and > set the end-of-test voltage very low. You > have to fool it into thinking that you're > testing a real 7 or perhaps 8-cell battery > to get the upper end of the voltage plot > where you need it. Then hook it across the > system being monitored. It will dutifully > gather voltage data for days if needs be > and produce nice plots too at no extra charge. > > Of course, this ties up a PC for the > duration of the test. I keep a number of > junker 'putes around for just this kind > of task. > > > Bob . . . >


    Message 4


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    Time: 07:45:54 AM PST US
    Subject: Re: Electrical surges in aircraft power supplies.
    From: "Matt Prather" <mprather@spro.net>
    I believe "surge" means having the input voltage(s) above the designed for limits for some amount of time. From this, it would be important to know the device's design limits. Then you could figure out the best strategy for protecting the device. That said, keep in mind there will be voltage excursions on all vehicles. Designers of devices for use on normal aircraft should have this in mind. The only kind of over-voltage event that you as a system designer should have to worry about is that of a runaway alternator - regulator full-on. If your airplane has an internally regulated alternator, it's a good idea to have a disconnect relay, and an even better idea to use an over-voltage detecting circuit to open the relay should the alternator misbehave badly. Everything else should be take care of by the equipment maker. If you have a piece of equipment that is not built to operate on a normal aircraft environment and you choose to use it anyway, there are a variety of strategies one could use to provide protection for that device. However, it may be difficult to know what needs to be protected, and how, unless you know details of how the equipment was designed. You might guess that you need something like a TVS (transient voltage suppression) diode on the power inputs, but that would strictly be a guess. Does anyone know if Blue Mountain did DO160 style design and testing? Matt- > > Bob et al. > I have been able to get my BMA Efis G4 Lite repaired. > The fault may have been caused by a surge in the power supply line. > Is there an accepted method to catch surges in our type of electrical > systems? > Any help much appreciated. > Patrick C Elliott, England. > Long-EZ, G-LGEZ. > >


    Message 5


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    Time: 08:05:23 AM PST US
    From: Speedy11@aol.com
    Subject: Re: Looking for a used PC680 battery
    Jared, I'm not certain that the PC680 is hazardous shipping. If not, I can ship it Fedex for low cost. The price was intended to be a joke. If you want it, just pay shipping. Where are you located? If you are getting it just to build a battery box, then consider what I did. I bought the jacketed battery (you can buy only the jacket, if needed) which provides you with a steel battery box that the battery fits perfectly in. I attached a contactor to the side of the box by carefully placing the round head screws so they fit within the "grooves" in the side of the battery. Also, I mounted the battery box to the airframe supports by drilling #10 screw holes in the bottom flange and adding plywood with cutouts for the screws in the bottom. I put my battery hold downs on the battery box, but it would just as easy to extend them all the way down to the underlying support. You can see my concept at _http://www.rv-8a.net/2005.htm_ (http://www.rv-8a.net/2005.htm) . Scroll down to 17 Dec 05. Let me know if you want the battery in late June - or if not, someone else may want it. Regards, Stan Sutterfield Do not archive I wasn't thinking that a sealed RG battery qualified as hazardous for shipping. Do you know why it would? On Tue, Mar 23, 2010 at 10:52 PM, <Speedy11@aol.com> wrote: > Jared, > I bought my Odessey PC680 in Dec 06 and flew the first time in Jun 09. The > battery has done fine. I spins my IO-390 with no problem. I don't think > you will have a problem even if you buy a new one to use for the next 2 > years. I'm going to replace mine with a new one in June and then every > other year afterward. > If you can wait until June, I'll send you mine for $14.69 plus hazard > shipping. > Stan Sutterfield > Do not archive > > > I'm still in the building stage, and I plan to use a PC680 battery in my > project. It seems wasteful for me to buy a new one just for the sake of > building my electrical system and battery support structure, since it will > be a couple of years before I'm ready to fly. By then I would like to > start > my flight testing with a new battery, so it makes good sense to make use of > a retired one for such construction ground operations. Is there is anyone > out there who has proactively removed a PC680 and would like to sell it to > me? I know that some people have mentioned that they use them for lawn > mowers and such, but surely there is someone out there who has one sitting > around. If you are that someone, please send me an email with your > requested price and payment method.


    Message 6


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    Time: 09:08:31 AM PST US
    Subject: Looking for a used PC680 battery
    From: <longg@pjm.com>
    Bevan, Actually you don't need that word :) - Just "I'll soon be ready..." works. BTW- Bob is right, you don't need a classic "box" for the RG. I bought one ($35?) so I could apply heat reflective lunar reflective tape to the outside to keep it cool. I could have made one out of e-Glass quite easily but my time and aggravation is worth more than the $35.00. I'll touch base with you in May-June and see if you still want it. I'm in PA so you can figure what, 15-16 lbs from 19038 to your joint. Glenn E. Long -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of B Tomm Sent: Tuesday, March 23, 2010 9:38 PM Subject: RE: AeroElectric-List: Looking for a used PC680 battery Sorry, I included the word "situation" in the wrong location of my sentence. Let me re-state. I soon be in a situation desiring a used battery (PC680), to accurately fabricate a battery box and associated cabling. It doesn't have to have any life left in it. May or June would be about right. I'll pay shipping if it's not too much. Bevan > _____________________________________________ > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of > ROGER & JEAN CURTIS > Sent: Tuesday, March 23, 2010 4:26 PM > To: aeroelectric-list@matronics.com > Subject: RE: AeroElectric-List: Looking for a used PC680 battery > > > I'll be looking for the same used battery situation soon, May or June > is good. > > Bevan > > Which used battery situation are you looking for? Do you want to > obtain a used battery or bury one in your back yard, like Glenn? > > > > Do not archive


    Message 7


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    Time: 11:06:12 AM PST US
    Subject: Re: Looking for a used PC680 battery
    From: thomas sargent <sarg314@gmail.com>
    I was in the same position. I was able to buy an empty PC-680 battery case at Batteries Plus for $20. They use them as promotional displays, so they often have these things laying around for several different products. On Wed, Mar 24, 2010 at 9:05 AM, <longg@pjm.com> wrote: > > Bevan, > > Actually you don't need that word :) - Just "I'll soon be ready..." > works. > > BTW- Bob is right, you don't need a classic "box" for the RG. I bought > one ($35?) so I could apply heat reflective lunar reflective tape to the > outside to keep it cool. I could have made one out of e-Glass quite > easily but my time and aggravation is worth more than the $35.00. > > I'll touch base with you in May-June and see if you still want it. I'm > in PA so you can figure what, 15-16 lbs from 19038 to your joint. > > Glenn E. Long > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of B > Tomm > Sent: Tuesday, March 23, 2010 9:38 PM > To: aeroelectric-list@matronics.com > Subject: RE: AeroElectric-List: Looking for a used PC680 battery > > Sorry, I included the word "situation" in the wrong location of my > sentence. > Let me re-state. > > I soon be in a situation desiring a used battery (PC680), to accurately > fabricate a battery box and associated cabling. It doesn't have to have > any life left in it. > > May or June would be about right. I'll pay shipping if it's not too > much. > > Bevan > > > > _____________________________________________ > > From: owner-aeroelectric-list-server@matronics.com > > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of > > ROGER & JEAN CURTIS > > Sent: Tuesday, March 23, 2010 4:26 PM > > To: aeroelectric-list@matronics.com > > Subject: RE: AeroElectric-List: Looking for a used PC680 battery > > > > > > I'll be looking for the same used battery situation soon, May or June > > is good. > > > > Bevan > > > > Which used battery situation are you looking for? Do you want > to > > obtain a used battery or bury one in your back yard, like Glenn? > > > > > > > > Do not archive > > -- Tom Sargent


    Message 8


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    Time: 11:20:45 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: Electrical surges in aircraft power supplies.
    At 05:16 AM 3/24/2010, you wrote: > >Bob et al. >I have been able to get my BMA Efis G4 Lite repaired. >The fault may have been caused by a surge in the power supply line. >Is there an accepted method to catch surges in our type of electrical >systems? >Any help much appreciated. >Patrick C Elliott, England. >Long-EZ, G-LGEZ. "Our type of electrical system" is no different than the one on automobiles. Designers of sophisticated electronics for automobiles and airplanes have been well aware of the characteristics of these DC power systems for decades. Design rules for crafting accessories compatible with such systems have also been well established for decades. Failure of any modern accessory (and BMA is certainly modern) attributed to power "surges, glitches, spikes, or gremlins" is a stronger suggestion of design deficiency in that accessory than for the DC power system. See: http://tinyurl.com/ybhvxal Bottom line is that any device designed after about 1970 to go into airplanes has been immune to the NORMAL operating characteristics of DC power systems by design. If the repair technician makes any assertion about your device having suffered a "glitch" is essentially accusing the device manufacture of not having done their homework. Bob . . .


    Message 9


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    Time: 11:24:44 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: Looking for a used PC680 battery
    At 10:01 AM 3/24/2010, you wrote: >Jared, >I'm not certain that the PC680 is hazardous shipping. If not, I can >ship it Fedex for low cost. The price was intended to be a >joke. If you want it, just pay shipping. Where are you located? All RG batteries are considered spill proof and can be shipped by services ordinarily limited to non-hazardous materials. Mark the outside of the box "Contains battery that is spill proof per 49CFR173.159(d)" Bob . . .


    Message 10


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    Time: 11:32:26 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: Batteries
    At 04:20 AM 3/24/2010, you wrote: >In september 2007, some messages promoted the use of A123 Systems >batteries. They should offer a substantial weight saving. > >Anybody heard of recent developments? The aviation battery manufacturing community is still wrestling with li-ion battery technology for use as starting batteries. I'm not aware of any wide-spread usage. There are a few devices qualified to the type certificate of some large air transport category aircraft as standy-by power. I'm not aware of anything even close to making onto a single-engine TC aircraft or even jets. Li-Ion technology energy densities are VERY high and that "works-better-weighs-less" siren song is seductive. But it's like trying to teach your engine how to burn nitro-glycerine. Yeah, the energy is there but keeping it from ever turning around to bite you is no trivial task! For now and the immediate future, SVLA is the king of affordable and safe performance in batteries for aircraft. Bob . . .


    Message 11


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    Time: 02:12:12 PM PST US
    Subject: Flap Motor lack of Oomph
    From: "jonlaury" <jonlaury@impulse.net>
    On start up, my long dormant flap motor can't overcome the drag of the linear actuator. The power supply gets pulled down to near zero volts, showing a couple of amps. When I pulled the motor free of the actuator, it starts reluctantly for a second or so and then quickly spins up to full speed and torque. The actuator input shaft is easily turned by my fingers. Is this a capacitor problem? I haven't pulled the motor apart yet. John Read this topic online here: http://forums.matronics.com/viewtopic.php?p=291588#291588


    Message 12


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    Time: 03:02:27 PM PST US
    Subject: Generic Ford Voltage Regulator
    From: "jonlaury" <jonlaury@impulse.net>
    Is this generic enough? http://www.nationsautoelectric.com/regulators.html F540 Regulator FD 1G SERIES Just giving all you "OH NO! DON'T GET THAT ONE!" people a chance before I "invest" $8.95. :) John Read this topic online here: http://forums.matronics.com/viewtopic.php?p=291589#291589


    Message 13


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    Time: 04:01:32 PM PST US
    Subject: Re: Flap Motor lack of Oomph
    From: Daniel Hooper <enginerdy@gmail.com>
    Where are you taking the power supply measurement reading "near zero volts"? ..and by power supply, do you mean the battery, battery+alternator, bench supply, or something else? --Daniel On Wed, Mar 24, 2010 at 4:09 PM, jonlaury <jonlaury@impulse.net> wrote: > > On start up, my long dormant flap motor can't overcome the drag of the linear actuator. The power supply gets pulled down to near zero volts, showing a couple of amps. > When I pulled the motor free of the actuator, it starts reluctantly for a second or so and then quickly spins up to full speed and torque. The actuator input shaft is easily turned by my fingers. > Is this a capacitor problem? I haven't pulled the motor apart yet. > > John > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=291588#291588 > > -- Daniel Hooper


    Message 14


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    Time: 04:57:55 PM PST US
    Subject: Re: Electrical surges in aircraft power
    supplies.
    From: "Matt Prather" <mprather@spro.net>
    Bob, Thanks for posting the article about DO-160 testing. Just the right amount of detail for considering what needs to be done to make a piece of gear work properly in an airplane. Regards, Matt- snip > > Failure of any modern accessory (and BMA is certainly > modern) attributed to power "surges, glitches, spikes, > or gremlins" is a stronger suggestion of design deficiency > in that accessory than for the DC power system. See: > > http://tinyurl.com/ybhvxal > snip > having done their homework. > > Bob . . . >


    Message 15


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    Time: 05:43:37 PM PST US
    Subject: Electronic Circuit Breakers on your EFIS
    From: "marcausman" <marc@verticalpower.com>
    Vertical Power Announces VP-X The Electronic Circuit Breaker System that integrates with your EFIS. Vertical Power, along with its EFIS partners, is formally announcing the VP-X at Sun n Fun next month but we wanted to give you an early preview. The VP-X uses proven electronic circuit breakers to simplify wiring and provide advanced electrical system capabilities. Monitor the status of individual devices and the entire electrical system right from your EFIS. Avionics, lights, trim, and flaps can all be controlled using standard switches or the EFIS. The VP-X works with Advanced Flight Systems, Grand Rapids Technologies HX, and MGL Voyager/Odyssey MKII EFIS products. For more information please see: http://www.verticalpower.com/VPX.html -------- Marc Ausman http://www.verticalpower.com &quot;Move up to a modern electrical system&quot; RV-7 IO-390 Flying Read this topic online here: http://forums.matronics.com/viewtopic.php?p=291615#291615


    Message 16


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    Time: 06:23:43 PM PST US
    From: Speedy11@aol.com
    Subject: Alternative battery solutions
    If you are planning to use the PC680 battery in your aircraft, consider a less expensive alternative which is made by the same manufacturer to the same specs and same dimensions. See _http://www.tnrbatteries.com/geg11.html_ (http://www.tnrbatteries.com/geg11.html) and then do an internet search for the lowest price. Also, for a battery hold down requiring very little work, take a look at this one - _http://tnrbatteries.com/pcbibpnhdb68.html_ (http://tnrbatteries.com/pcbibpnhdb68.html) I have no association with the retailer. Do a search for the lowest prices. I bought a Shumacher 1562A battery maintainer today and initial charge voltage was 13.8 tapering down to 13.0 after about 3 hours. Stan Sutterfield Do not archive


    Message 17


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    Time: 06:41:50 PM PST US
    Subject: Re: Flap Motor lack of Oomph
    From: "jonlaury" <jonlaury@impulse.net>
    Daniel, My bench power supply has analog meters for volts and amps. When I hook it up to the flap motor/linear actuator, the voltmeter almost pegs 0 volts. John Read this topic online here: http://forums.matronics.com/viewtopic.php?p=291631#291631


    Message 18


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    Time: 07:13:47 PM PST US
    From: Daniel Hooper <enginerdy@gmail.com>
    Subject: Re: Flap Motor lack of Oomph
    John, It sounds like your bench supply might have a lack of "oomph". Try connecting it to a battery. Use a fuse in series with it to prevent smoke, just in case you have a dead short across the motor. Good luck! Daniel Hooper On Mar 24, 2010, at 8:40 PM, "jonlaury" <jonlaury@impulse.net> wrote: > > > > Daniel, > My bench power supply has analog meters for volts and amps. When I > hook it up to the flap motor/linear actuator, the voltmeter almost > pegs 0 volts. > > John > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=291631#291631 > >


    Message 19


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    Time: 07:59:54 PM PST US
    Subject: Re: Electrical surges in aircraft power supplies.
    From: "marcausman" <marc@verticalpower.com>
    The DO-160E category specifications we've designed to state 40 volts for 1 second and 60 volts for 100ms, 10 to 32 volts normal operating range. This, along with other design considerations, has proven to be quite reliable. -------- Marc Ausman http://www.verticalpower.com &quot;Move up to a modern electrical system&quot; RV-7 IO-390 Flying Read this topic online here: http://forums.matronics.com/viewtopic.php?p=291640#291640


    Message 20


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    Time: 08:44:17 PM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: Electrical surges in aircraft power
    supplies. At 05:27 PM 3/24/2010, you wrote: > >Bob, > >Thanks for posting the article about DO-160 testing. Just the right >amount of detail for considering what needs to be done to make a piece of >gear work properly in an airplane. It's a pretty old process. I have a copy of DO-138 dated sometime in the 50's which is the predecessor to DO-160. I'm still trying to find a copy of DO-108 with preceded DO-138. I found a journal article dated 1964 that referenced DO-108. In any case, the idea that electro-whizzies bolted to a general aviation airplane should be qualified to thrive in their expected work environment is not a new idea. Bob . . .


    Message 21


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    Time: 08:47:13 PM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: Generic Ford Voltage Regulator
    At 05:00 PM 3/24/2010, you wrote: > >Is this generic enough? > >http://www.nationsautoelectric.com/regulators.html >F540 Regulator FD 1G SERIES > >Just giving all you "OH NO! DON'T GET THAT ONE!" people a chance >before I "invest" $8.95. Works good, lasts a long time. If you wanted to really "get down" with the generic thingy, you could build this one from Radio Shack parts http://aeroelectric.com/Pictures/Alternators/Internal_Regulator_Circa_1980.pdf But the 'ford' part is a perfectly good regulator. Bob . . .


    Message 22


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    Time: 09:43:19 PM PST US
    From: "Kevin Klinefelter" <kevann@gotsky.com>
    Subject: Re: Alternative battery solutions
    Here is a PC680 mounting I am using. http://www.summitracing.com/search/Product-Line/Odyssey-Battery-Mounts/?k eyword=battery+mount&autoview=SKU ----- Original Message ----- From: Speedy11@aol.com To: aeroelectric-list@matronics.com Sent: Wednesday, March 24, 2010 6:17 PM Subject: AeroElectric-List: Alternative battery solutions If you are planning to use the PC680 battery in your aircraft, consider a less expensive alternative which is made by the same manufacturer to the same specs and same dimensions. See http://www.tnrbatteries.com/geg11.html and then do an internet search for the lowest price. Also, for a battery hold down requiring very little work, take a look at this one - http://tnrbatteries.com/pcbibpnhdb68.html I have no association with the retailer. Do a search for the lowest prices. I bought a Shumacher 1562A battery maintainer today and initial charge voltage was 13.8 tapering down to 13.0 after about 3 hours. Stan Sutterfield Do not archive


    Message 23


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    Time: 10:13:46 PM PST US
    From: "Kevin Klinefelter" <kevann@gotsky.com>
    Subject: Re: Looking for a used PC680 battery
    I'm in Bishop (KBIH) If Jared does not get back to me you can have it.What airport do you use? Kevin do not archive




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