---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 02/05/09: 13 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:23 AM - Are LEDs bright enough? (Sam Hoskins) 2. 05:31 AM - Re: Z-13/8 Checklist (Robert L. Nuckolls, III) 3. 05:58 AM - Toggle Actuated Circuit Breakers () 4. 06:13 AM - Re: Are LEDs bright enough? (John Cox) 5. 07:08 AM - Common Wire Diameters () 6. 07:33 AM - Re: Re: Z-13/8 Checklist (Normand Biron) 7. 07:33 AM - Re: Common Wire Diameters (Ron Quillin) 8. 07:41 AM - Re: Common Wire Diameters (Bob White) 9. 07:55 AM - Re: Toggle Actuated Circuit Breakers (rparigor@SUFFOLK.LIB.NY.US) 10. 08:07 AM - Re: Common Wire Diameters (Robert L. Nuckolls, III) 11. 01:33 PM - Re: Trying to obtain card edge connector for KX165 Nav/com (Radioflyer) 12. 01:54 PM - Re: Re: Trying to obtain card edge connector for KX165 Nav/com (Robert L. Nuckolls, III) 13. 02:06 PM - How to chose an EFIS (Peter Pengilly) ________________________________ Message 1 _____________________________________ Time: 05:23:28 AM PST US Subject: AeroElectric-List: Are LEDs bright enough? From: Sam Hoskins FYI. Here is a video examining the suitability of various landing lights. I saw it on today's AvWeb. http://www.youtube.com/watch?v=Hlr1t4WRvvU&eurl=http://www.avweb.com/eletter/archives/avflash/1309-full.html&feature=player_embedded Sam www.samhoskins.blogspot.com ________________________________ Message 2 _____________________________________ Time: 05:31:03 AM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: Re: Z-13/8 Checklist At 10:34 PM 2/4/2009, you wrote: >Bob, > >I HAVE THE B & C L-60 ALTERNATOR WITH THE LR-3 CONTROLLER. Very good. This alternator operates in a manner consistent with those installed in TC aircraft since day-one. It may be turned OFF and ON at any time under any conditions without concern for damage to the alternator or any other part of the system. Aside from continuous loads with inadequate cooling, there are no conditions under which operations or manipulation by the pilot puts an alternator at risk. Finally, there is no way that an alternator can produce more than a few percent more current than its nameplate rating . . . even as a transient event. The number you're seeing from your data acquisition system is bogus. There's a huge data set of pronouncements about alternator behavior and capability circulating in the wild that is fraught with inaccuracy and lack of understanding. That particular combination has a rich history of failure free, performance as advertised. Bob . . . ----------------------------------------) ( . . . a long habit of not thinking ) ( a thing wrong, gives it a superficial ) ( appearance of being right . . . ) ( ) ( -Thomas Paine 1776- ) ---------------------------------------- ________________________________ Message 3 _____________________________________ Time: 05:58:44 AM PST US Subject: AeroElectric-List: Toggle Actuated Circuit Breakers From: With respect to life cycles how do the switch type circuit breakers hold up? I am looking at the Potter & Brumfield variety. Thanks ________________________________ Message 4 _____________________________________ Time: 06:13:10 AM PST US Subject: RE: AeroElectric-List: Are LEDs bright enough? From: John Cox Thanks for the informative re-direct to the Utube video. Made me wonder th e impact of a flat reflector surface with the LEDs vs.a more parabolic like the incandescents and HIDs? Durability and cost vs. throw distance. John Cox From: Sam Hoskins Sent: Thu 2/5/2009 5:20 AM Subject: AeroElectric-List: Are LEDs bright enough? FYI. Here is a video examining the suitability of various landing lights. I saw it on today's AvWeb. http://www.youtube.com/watch?v=Hlr1t4WRvvU&eurl=http://www.avweb.com/el etter/archives/avflash/1309-full.html&feature=player_embedded Sam http://www.samhoskins.blogspot.com/ ________________________________ Message 5 _____________________________________ Time: 07:08:41 AM PST US Subject: AeroElectric-List: Common Wire Diameters From: Can any of you point me to a reference describing Tefzel MIL-W-22759/16 wire diameter sizes for those typically used in aircraft? I am specifically interested in #4, #6, #10 & 12. Thanks, Glenn ________________________________ Message 6 _____________________________________ Time: 07:33:41 AM PST US From: "Normand Biron" Subject: Re: AeroElectric-List: Re: Z-13/8 Checklist Bob, Thanks, You have been very helpful. I feel very comfortable flying my airplane with your Z-13/8 All Electric Airplane on a Budget with P Mags. power distribution design. Norm ----- Original Message ----- From: Robert L. Nuckolls, III To: aeroelectric-list@matronics.com Sent: Thursday, February 05, 2009 7:28 AM Subject: AeroElectric-List: Re: Z-13/8 Checklist > At 10:34 PM 2/4/2009, you wrote: >Bob, > >I HAVE THE B & C L-60 ALTERNATOR WITH THE LR-3 CONTROLLER. Very good. This alternator operates in a manner consistent with those installed in TC aircraft since day-one. It may be turned OFF and ON at any time under any conditions without concern for damage to the alternator or any other part of the system. Aside from continuous loads with inadequate cooling, there are no conditions under which operations or manipulation by the pilot puts an alternator at risk. Finally, there is no way that an alternator can produce more than a few percent more current than its nameplate rating . . . even as a transient event. The number you're seeing from your data acquisition system is bogus. There's a huge data set of pronouncements about alternator behavior and capability circulating in the wild that is fraught with inaccuracy and lack of understanding. That particular combination has a rich history of failure free, performance as advertised. Bob . . . ----------------------------------------) ( . . . a long habit of not thinking ) ( a thing wrong, gives it a superficial ) ( appearance of being right . . . ) ( ) ( -Thomas Paine 1776- ) ---------------------------------------- http://www.matronics.com/Navigator?AeroElectric-List http://www.matronics.com/contribution ________________________________ Message 7 _____________________________________ Time: 07:33:41 AM PST US From: "Ron Quillin Subject: Re: AeroElectric-List: Common Wire Diameters At 07:06 2/5/2009, you wrote: > >Can any of you point me to a reference describing Tefzel MIL-W-22759/16 >wire diameter sizes for those typically used in aircraft? I am >specifically interested in #4, #6, #10 & 12. > > >Thanks, >Glenn PDF of the official spec, if somewhat dated, when it was MIL and still freely available and not commercial for $$$. But be aware these are specified maximum diameters and stock from differing manufacturers varies. Likely you can visit the manufacturers individual site and get their specs. Ron Q. ________________________________ Message 8 _____________________________________ Time: 07:41:36 AM PST US From: Bob White Subject: Re: AeroElectric-List: Common Wire Diameters Hi Glenn, Try http://www.jaguarind.com/products/ptfe/16.html They have a nice table. Bob W. On Thu, 5 Feb 2009 10:06:52 -0500 wrote: > > Can any of you point me to a reference describing Tefzel MIL-W-22759/16 > wire diameter sizes for those typically used in aircraft? I am > specifically interested in #4, #6, #10 & 12. > > > Thanks, > Glenn > > > > > -- N93BD - Rotary Powered BD-4 - http://www.bob-white.com 3.8 Hours Total Time and holding Cables for your rotary installation - http://roblinstores.com/ ________________________________ Message 9 _____________________________________ Time: 07:55:03 AM PST US Subject: Re: AeroElectric-List: Toggle Actuated Circuit Breakers From: rparigor@SUFFOLK.LIB.NY.US "> With respect to life cycles how do the switch type circuit breakers hold > up? I am looking at the Potter & Brumfield variety." I can tell you from experience, if you try and loosen the screw on one without supporting themetal tab it will not last one cycle! I am not sure if it is exact switch, but Beechcraft is going through some noise to have toggle breakers all replaced on I think it is Barons due to a failure. Not sure if it was an open or closed failure. (There is enough stuff going on in switch/breaker I could see there is a remote chance it could fail miserably and weld itself closed or make a high resistanceconnection and make plenty of heat) That said local AIs and A+Ps all told me reliability is good, they don't think any worst thanpull able breakers, or switches that do fail from time to time. B+C is not an advocate of using them to supply power to field, said they can sometimes (more often than they feel acceptable) make a higher resistance connection than is needed for stable running alternator. Found this tid bit out after I installed one for my SD20S, but will keep that information handy if I develop a problem. Not from experience but from dissecting one and studying, probably would not be a bad idea to replace any very important toggle/breakers at perhaps major timeor 15 years?? Grease will go away and the plastic arm to reset looks to me it could be a failure point. I think if it is closed will probably be pretty reliable, as far as from a mechanical standpoint goes. Resetting imposes a lot more mechanical stresses than opening. See: http://www.europaowners.org/modules.php?set_albumName=album258&op=modload&name=gallery&file=index&include=view_album.php Break a breaker. I am using perhaps a dozen or so on our Europa project, primarily from a space savings point of view. I didn't weigh difference between a Klixon pull able breaker and a switch, but expect the later is probably lighter (a bank or 9 is pretty heavy). I forget exacts, but if a P+B toggle/breaker is good for 9 or 12K cycles, supposedly a Klixon pull able breaker used as a switch (that it is not precisely designed for) is good for 3 or 4K cycles. If I am off on the number of cycles, it is not by much but it is what was told me. You can look at a engineering sheet if you are really interested, failure from lack of use and mechanical related age induced stresses are much more likely though. Ron Parigoris ________________________________ Message 10 ____________________________________ Time: 08:07:19 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Common Wire Diameters At 09:06 AM 2/5/2009, you wrote: > >Can any of you point me to a reference describing Tefzel MIL-W-22759/16 >wire diameter sizes for those typically used in aircraft? I am >specifically interested in #4, #6, #10 & 12. Diameters can vary depending on the slash number for the variants. You can access the full spectrum of data on 22759 and other wires in the catalog on my website at . . . http://aeroelectric.com/Mfgr_Data/Wire/Standard_Wire_and_Cable/Std_Wire_Cable.pdf /16 data is on document page 80 (pdf page 87). Bob . . . ----------------------------------------) ( . . . a long habit of not thinking ) ( a thing wrong, gives it a superficial ) ( appearance of being right . . . ) ( ) ( -Thomas Paine 1776- ) ---------------------------------------- ________________________________ Message 11 ____________________________________ Time: 01:33:26 PM PST US Subject: AeroElectric-List: Re: Trying to obtain card edge connector for KX165 Nav/com From: "Radioflyer" Bob, you're wonderful, mission accomplished. Based on your info and document links, I was able to verify that it is a Molex part number 09-50-6155. It took me 5 minutes of looking to verify the possibility of numbers on the ends of the connector. Then I had to get my young daughter with perfect vision to be able to read the numbers, which turned out to be the actual part number instead of the 4338 number. First time I ever had to do that! Your vendor links are incredibly helpful, also. Thanks. PS- Is it Ok to power up the nav/com without terminating the G/S and Nav antenna connections? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=228728#228728 ________________________________ Message 12 ____________________________________ Time: 01:54:02 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Trying to obtain card edge connector for KX165 Nav/com > >PS- Is it Ok to power up the nav/com without terminating the G/S and >Nav antenna connections? Without benefit of having schematics to look at, I cannot be 100.0% sure but it's pretty likely that no harm will occur. After all, connectors DO come loose in service and I would hope that the fine minds under Ed King's legacy would have thought of that and accounted for it. Bob . . . ----------------------------------------) ( . . . a long habit of not thinking ) ( a thing wrong, gives it a superficial ) ( appearance of being right . . . ) ( ) ( -Thomas Paine 1776- ) ---------------------------------------- ________________________________ Message 13 ____________________________________ Time: 02:06:25 PM PST US From: "Peter Pengilly" Subject: AeroElectric-List: How to chose an EFIS I have written an article about factors you might consider when buying an EFIS that has been published in the UK homebuilder magazine, Light Aviation. It might be of interest to some of you here. http://www.glosterairparts.co.uk/EFIS8pt1.htm Peter ------------------------------------------------------------------------------------- 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.