AeroElectric-List Digest Archive

Thu 04/12/07


Total Messages Posted: 7



Today's Message Index:
----------------------
 
     1. 06:22 AM - Re: What about an electronic distribution panel?  (Robert L. Nuckolls, III)
     2. 07:02 AM - Re: What about an electronic distribution panel?  (Gaye and Vaughn)
     3. 07:05 AM - Re: 12V batteries in series - a few more followup questions (rtitsworth)
     4. 09:25 AM - Re: What about an electronic distribution panel?  (Les Goldner)
     5. 10:32 AM - Introduction (hansriet)
     6. 10:33 AM - Re: AeroElectric.com is in new digs . . . (hansriet)
     7. 01:41 PM - Re: Introduction (Hinde, Frank George (Corvallis))
 
 
 


Message 1


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    Time: 06:22:54 AM PST US
    From: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
    Subject: Re: What about an electronic distribution panel?
    At 11:27 PM 4/11/2007 -0700, you wrote: >I am building a Zenith 701 with a Rotax 912ULS engine and would like to >have opinions about using a commercial panel power distribution system >like EXP Bus Products EXP2V (see ><http://www.aircraftspruce.com/catalog/elpages/expbus.php>http://www.aircraftspruce.com/catalog/elpages/expbus.php) >. My plane will have the normal electrical stuff: landing lights, radios, >intercom, Dynon glass cockpit instruments, nav and strobe lights, VHF and >Mode C radios, an EZ single axis autopilot, and a few lighted steam gauges. > >I know aeroelectric says keep it simple and use switches rather than >breakers, but I don t have a lot of room left on my panel and this "box" >looks easy to install and flashes indication that a breaker has been >tripped (with an indicator module option). > >Do you know if this device provides for an essential buss or will isolates >a bad generator? Is this overkill? Are there specific up or downsides I >need to know about? Is it a good way to go? > >Thanks for the advice, Products like this PRE-design your electrical system not only with a selection of hardware but they establish the architecture as well. What you see is what you get. If there's a feature you don't need, it's not an easy option to eliminate it. If there's a feature you want that is not offered, it's not easy (or neat) to add. When it comes time to do repairs in the future, any repair needed to one of these assemblies will be more arduous than for the simple row of switches and associated hardware for which you posses some personal understanding. Finally, consider the cost. For the price of these products, you can pretty much purchase ALL the switches, wire, contactors, fuse blocks and then form them into architecture and features that exactly meet your needs. The only advantage for choosing the pre-fabricated route is perhaps a savings of having to make some decisions and acquire understanding. The price for this relief may result in a system that is less than the best we know how to do and will ultimately have a higher cost of ownership. Go to http://aeroelectric.com and do a search on "exp-bus". There have been a number of detailed discussions on this topic in past years. These products probably perform as advertised. This isn't an issue of functionality or safety. It is an issue of how much command and control of your destiny you're willing to hand over to a pre-fab shop and how much you're willing to pay them to take that command and control. Bob . . . ---------------------------------------- ( IF one aspires to be "world class", ) ( what ever you do must be exercised ) ( EVERY day . . . ) ( R. L. Nuckolls III ) ----------------------------------------


    Message 2


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    Time: 07:02:45 AM PST US
    From: "Gaye and Vaughn" <vaughnray@bvunet.net>
    Subject: Re: What about an electronic distribution panel?
    I had planned to use the EXP2V bus in my Europa and had, in fact, purchased it. After several attempts to call and email in order to get info so that I could wire in a second alternator, I sent it back after 9 months because I did not receive anything other than automated responses. Since I did not really need to know that they had received my message, but needed to know if it could accommodate a second alternator. I will not deal with unresponsive vendors. Anyway after 9 months, I had studied The AeroElectic Connection enough to realize the shortcomings of their distribution panel and enough knowledge to proceed without it. As Bob said, if you are trying to do something other than what the panel was designed to do, you would be better off gaining the understanding necessary to do it yourself. The bonus later on is the ability to trouble shoot and make changes if you decide to modify your panel in some way. Vaughn Teegarden my 2 cents worth ----- Original Message ----- From: Les Goldner To: aeroelectric-list@matronics.com Sent: Thursday, April 12, 2007 2:27 AM Subject: AeroElectric-List: What about an electronic distribution panel? I am building a Zenith 701 with a Rotax 912ULS engine and would like to have opinions about using a commercial panel power distribution system like EXP Bus Products' EXP2V (see http://www.aircraftspruce.com/catalog/elpages/expbus.php) . My plane will have the normal electrical stuff: landing lights, radios, intercom, Dynon glass cockpit instruments, nav and strobe lights, VHF and Mode C radios, an EZ single axis autopilot, and a few lighted steam gauges. I know aeroelectric says keep it simple and use switches rather than breakers, but I don't have a lot of room left on my panel and this "box" looks easy to install and flashes indication that a breaker has been tripped (with an indicator module option). Do you know if this device provides for an essential buss or will isolates a bad generator? Is this overkill? Are there specific up or downsides I need to know about? Is it a good way to go? Thanks for the advice, Les


    Message 3


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    Time: 07:05:05 AM PST US
    From: "rtitsworth" <rtitsworth@mindspring.com>
    Subject: 12V batteries in series - a few more followup questions
    Bob, etal, I might have missed it (I re-checked), but I never saw an answer/reply to the questions below. As always, I appreciate any thoughts you offer. I'm indebted to your efforts/experience. Rick -----Original Message----- From: rtitsworth [mailto:rtitsworth@mindspring.com] Sent: Thursday, April 05, 2007 1:14 AM Subject: RE: AeroElectric-List: 12V batteries in series - a few more followup questions BobN, Thanks much (as usual)!!! I'm going to try the omega bend connector, it should be pretty simple with the thin material - probably better than the straight/flat connector, perhaps not as robust as the 4AWG cable - sort of a compromise in my mind. Follow-up question#1: Let's say sometime in the future, one of the battery terminals or the omega connector strap comes loose or breaks off in flight. How would I know (during the flight)? My ignorant guesses below. a) The ammeter (shunt on the battery lead) would move from perhaps a slight charging state to zero, but that might not be noticeable. b) I understand the alternator would not be happy without the battery. But, how would I know? Voltage fluctuations? Potential overvoltage (crowbar) scenario? c) Other??? Follow-up question #2: What type of nut should I use on the threaded battery terminals? I'm assuming just a plain (AN345) nut (Cad plated, Stainless, other)? However, it would be nice to safety it somehow (perhaps overkill). Would it make sense to use two nuts (a jam nut)? Would it make sense to use a nylon lock nut as the 2nd jam nut? Would it make most sense to just use one all metal stop nut (AN363) Follow-up question #3: Assuming a ground stud through the firewall, what should the stud be made of (steel) (zink plated) ((brass) (other)? What type of nut(s) should I use on it (same as the battery terminals)? What type of nut should I use on the engine side of the engine ground braid? Rick Titsworth rtitsworth@mindspring.com Detroit, Michigan


    Message 4


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    Time: 09:25:28 AM PST US
    From: "Les Goldner" <lgold@quantum-associates.com>
    Subject: What about an electronic distribution panel?
    Thanks for the advice guys. You just saved me a few hundred dollars and a lot of aggravation... So if you or Bob or Bill come to Berkeley or Petaluma, let me know and I will buy you lunch. (Bill I know you live close by, so I expect to pay-up) Regards, Les Les Goldner 188 Gravatt Dr. Berkeley, CA 94705 510-549-1622 _____ From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Gaye and Vaughn Sent: Thursday, April 12, 2007 7:02 AM Subject: Re: AeroElectric-List: What about an electronic distribution panel? I had planned to use the EXP2V bus in my Europa and had, in fact, purchased it. After several attempts to call and email in order to get info so that I could wire in a second alternator, I sent it back after 9 months because I did not receive anything other than automated responses. Since I did not really need to know that they had received my message, but needed to know if it could accommodate a second alternator. I will not deal with unresponsive vendors. Anyway after 9 months, I had studied The AeroElectic Connection enough to realize the shortcomings of their distribution panel and enough knowledge to proceed without it. As Bob said, if you are trying to do something other than what the panel was designed to do, you would be better off gaining the understanding necessary to do it yourself. The bonus later on is the ability to trouble shoot and make changes if you decide to modify your panel in some way. Vaughn Teegarden my 2 cents worth ----- Original Message ----- From: Les Goldner <mailto:lgold@quantum-associates.com> Sent: Thursday, April 12, 2007 2:27 AM Subject: AeroElectric-List: What about an electronic distribution panel? I am building a Zenith 701 with a Rotax 912ULS engine and would like to have opinions about using a commercial panel power distribution system like EXP Bus Products' EXP2V (see <http://www.aircraftspruce.com/catalog/elpages/expbus.php> http://www.aircraftspruce.com/catalog/elpages/expbus.php) . My plane will have the normal electrical stuff: landing lights, radios, intercom, Dynon glass cockpit instruments, nav and strobe lights, VHF and Mode C radios, an EZ single axis autopilot, and a few lighted steam gauges. I know aeroelectric says keep it simple and use switches rather than breakers, but I don't have a lot of room left on my panel and this "box" looks easy to install and flashes indication that a breaker has been tripped (with an indicator module option). Do you know if this device provides for an essential buss or will isolates a bad generator? Is this overkill? Are there specific up or downsides I need to know about? Is it a good way to go? Thanks for the advice, Les href="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matro nics.com/Navigator?AeroElectric-List href="http://forums.matronics.com">http://forums.matronics.com


    Message 5


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    Time: 10:32:14 AM PST US
    Subject: Introduction
    From: "hansriet" <hansinla@mac.com>
    Hello Listmembers, I would like to introduce myself. I'm a brand new builder of a Zenith Zodiac XL kit. I plan to do a lot of electronics mods myself (flunked polytechnic college in a previous life many moons ago). I have Bob's book and I think it's great. has anybody on the list ever attempted to build a two place intercom? I think the intercoms on the market are way overpriced. I found schematics for a David Clark intercom on their website and think about using that for inspiration. Regards, Hans van Riet Read this topic online here: http://forums.matronics.com/viewtopic.php?p=106529#106529


    Message 6


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    Time: 10:33:28 AM PST US
    Subject: Re: AeroElectric.com is in new digs . . .
    From: "hansriet" <hansinla@mac.com>
    Bob, I attempted to order a PCB for the audio isolation amp, but haven't heard anything. Maybe it got lost in the move? Hans van Riet Read this topic online here: http://forums.matronics.com/viewtopic.php?p=106530#106530


    Message 7


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    Time: 01:41:29 PM PST US
    Subject: Introduction
    From: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
    Cool, I sold a 601 HDS with a subaru conversion last year That I had built and flown for 7 years. I think you can build a lot of your own electronics, its just a case of do you want to with all the other work you will be doing? Certainly building my IFR Rv7 there was no way I would bother investing that kind of time. But I have seen a lot of designs for home made circuitry. Have fun Frank -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of hansriet Sent: Thursday, April 12, 2007 10:31 AM Subject: AeroElectric-List: Introduction Hello Listmembers, I would like to introduce myself. I'm a brand new builder of a Zenith Zodiac XL kit. I plan to do a lot of electronics mods myself (flunked polytechnic college in a previous life many moons ago). I have Bob's book and I think it's great. has anybody on the list ever attempted to build a two place intercom? I think the intercoms on the market are way overpriced. I found schematics for a David Clark intercom on their website and think about using that for inspiration. Regards, Hans van Riet Read this topic online here: http://forums.matronics.com/viewtopic.php?p=106529#106529




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