AeroElectric-List Digest Archive

Thu 04/07/16


Total Messages Posted: 10



Today's Message Index:
----------------------
 
     1. 03:34 AM - Re: switches (bob noffs)
     2. 04:38 AM - Re: switches (C&K)
     3. 06:42 AM - Re: switches (Justin Jones)
     4. 08:42 AM - Re: If anybody is bored...could you be so kind as to check my w (user9253)
     5. 10:53 AM - Re: switches (Robert L. Nuckolls, III)
     6. 11:13 AM - Essential Bus Switch (William Hunter)
     7. 12:23 PM - Re: switches (Bill)
     8. 12:38 PM - Re: switches (John Tipton)
     9. 01:18 PM - Re: Essential Bus Switch (Robert L. Nuckolls, III)
    10. 01:37 PM - Re: Essential Bus Switch (Rene)
 
 
 


Message 1


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    Time: 03:34:36 AM PST US
    Subject: Re: switches
    From: bob noffs <icubob@gmail.com>
    thanks guys. these switches are all in location of start key. i have thought about the ''oops''. mouser makes switch guards which lock the switch in any position for my back up systems.as a FYI some guards from aviation vendors always turn the switch off when the guard is closed.haven't decided on the guard thing yet. bob noffs On Wed, Apr 6, 2016 at 9:16 PM, Charlie England <ceengland7@gmail.com> wrote: > 1" works for finger convenience, though many switches will allow 3/4" > spacing. > > I'm trying to group by function, & add an extra 1/4-1/2" between > functions. Ex: strobes, 1", position lights, then 1 1/4" to pitot heat. > > Spaces make it easier to find a switch by 'feel'. > > Keep anything that might cause an "oh s**t" reaction (ie: fuel pump off) > well away from frequently used stuff, like flaps down. > > Charlie > > > -------- Original message -------- > From: bob noffs > Date:04/06/2016 11:07 AM (GMT-05:00) > To: aeroelectric-list@matronics.com > Subject: AeroElectric-List: switches > > since an earlier post of mine about my ''electric dependant engine'' i > have decided to use 2 on-ff switches instead of one on-off-on to operate > backup systems.because of the importance of the alternator as a backup > would it be adviseable to use a 0n-0n switch for the alternator? if the > alternator switch is not on it would light up a warning light on the panel? > seems a more sure way to catch this than with the eis for voltage. > another question......1'' seems to be a pretty standard spacing for > toggles but what distance is generally accepted to separate horizontal rows? > thanks, bob noffs >


    Message 2


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    Time: 04:38:22 AM PST US
    Subject: Re: switches
    From: C&K <yellowduckduo@gmail.com>
    I would not want a guard that hides the switch position. If a guard is closed I want it to be confirmation of the switch position. Most aviation guards do that and further they suggest that the switch is important enough to not touch without thinking about it a moment. Too many guarded switches actually destroys that little bit of psychological protection. Ken On 07/04/2016 6:32 AM, bob noffs wrote: > thanks guys. these switches are all in location of start key. > i have thought about the ''oops''. mouser makes switch guards which > lock the switch in any position for my back up systems.as > <http://systems.as> a FYI some guards from aviation vendors always > turn the switch off when the guard is closed.haven't decided on the > guard thing yet. > bob noffs >


    Message 3


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    Time: 06:42:27 AM PST US
    From: Justin Jones <jmjones2000@mindspring.com>
    Subject: Re: switches
    One of the most exciting parts of the build, for me, was the human factors e ngineering. Switch layout, type of switches, safety concerns with an electri c dependent engine, and how pilots will interact with the system. Below is a picture of my final product. As I mentioned before, all switches critical to the engine running are mils pec lever-lock switches. I can't count the times during turbulence that I've reached for something on the panel and touched something else due to bounci ng around. I don't to accidentally bump an engine switch off during flight d ue to turbulence (although any single switch would not shut it down. It woul d take the correct pair). It was an easy solution that I like, and I wouldn' t change a thing. Justin > On Apr 7, 2016, at 04:36, C&K <yellowduckduo@gmail.com> wrote: > > > I would not want a guard that hides the switch position. If a guard is clo sed I want it to be confirmation of the switch position. Most aviation guard s do that and further they suggest that the switch is important enough to no t touch without thinking about it a moment. Too many guarded switches actual ly destroys that little bit of psychological protection. > Ken > >> On 07/04/2016 6:32 AM, bob noffs wrote: >> thanks guys. these switches are all in location of start key. >> i have thought about the ''oops''. mouser makes switch guards which lock t he switch in any position for my back up systems.as <http://systems.as> a FY I some guards from aviation vendors always turn the switch off when the guar d is closed.haven't decided on the guard thing yet. >> bob noffs > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= ========================== ========= > > >


    Message 4


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    Time: 08:42:29 AM PST US
    Subject: Re: If anybody is bored...could you be so kind as to
    check my w
    From: "user9253" <fransew@gmail.com>
    I Agree with Jeff. And Jeff, is your plane flying with your electrical system wired per your schematic? If so, how do you like it? -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=454681#454681


    Message 5


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    Time: 10:53:43 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: switches
    At 06:36 AM 4/7/2016, you wrote: > >I would not want a guard that hides the switch position. If a guard >is closed I want it to be confirmation of the switch position. Most >aviation guards do that and further they suggest that the switch is >important enough to not touch without thinking about it a moment. >Too many guarded switches actually destroys that little bit of >psychological protection.\ Most off-the-shelf switch covers will force the switch to one side when closed. Operating the switch requires that the cover be opened before the switch can be moved . . . and the cover must remain open. Closing the cover forces the switch back. You have to work pretty hard to find covers that allow 'protection' in either switch position. Bob . . .


    Message 6


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    Time: 11:13:06 AM PST US
    Subject: Essential Bus Switch
    From: William Hunter <billhuntersemail@gmail.com>
    What would be a good choice for a switch (and vendor) to use for the essential bus? My avionics bus will only have a transponder, ADS-B, GNS-650,and SL-15. should this switch be a simple toggle or should it be a Kaliko circuit breaker switch? THANKS!!! Bill Hunter Bill Hunter +1 408-464-1902


    Message 7


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    Time: 12:23:39 PM PST US
    Subject: Re: switches
    From: Bill <billp@wwpc.com>
    There are good quality switches that have a locking feature that will lock the switch in either position. To change the switches position you have to pull the switch bat out to release the movement to change it's position. I have used these in places where I never want the switch to be moved accidentally. I've found them at Digikey. Here's an example: http://www.digikey.com/product-detail/en/apem-inc/631H%2F22V/679-1212-ND/1280278 These don't use a switch cover to protect against accidental actuation, the protection is built into the mechanical design of the switch. A similar feature can be found in switches of various mounting styles, pole configurations and capacities. Bill Putney - N5413K On 4/7/16 10:51 AM, Robert L. Nuckolls, III wrote: > At 06:36 AM 4/7/2016, you wrote: >> >> I would not want a guard that hides the switch position. If a guard >> is closed I want it to be confirmation of the switch position. Most >> aviation guards do that and further they suggest that the switch is >> important enough to not touch without thinking about it a moment. Too >> many guarded switches actually destroys that little bit of >> psychological protection.\ > > Most off-the-shelf switch covers will force the > switch to one side when closed. Operating the switch > requires that the cover be opened before the switch > can be moved . . . and the cover must remain open. > Closing the cover forces the switch back. > > You have to work pretty hard to find covers that > allow 'protection' in either switch position. > > Bob . . . >


    Message 8


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    Time: 12:38:22 PM PST US
    Subject: Re: switches
    From: John Tipton <jmtipton@btopenworld.com>
    You have to look no further than 'Steinair' for a selection of locking switc hes: http://www.steinair.com/store.cfm?tlcatid=23 Regards: John Sent from my iPad ----x--O--x---- > On 7 Apr 2016, at 08:20 pm, Bill <billp@wwpc.com> wrote: > > There are good quality switches that have a locking feature that will lock the switch in either position. To change the switches position you have to p ull the switch bat out to release the movement to change it's position. I ha ve used these in places where I never want the switch to be moved accidental ly. I've found them at Digikey. Here's an example: http://www.digikey.com/p roduct-detail/en/apem-inc/631H%2F22V/679-1212-ND/1280278 > These don't use a switch cover to protect against accidental actuation, th e protection is built into the mechanical design of the switch. A similar fe ature can be found in switches of various mounting styles, pole configuratio ns and capacities. > > Bill Putney - N5413K > >> On 4/7/16 10:51 AM, Robert L. Nuckolls, III wrote: >> At 06:36 AM 4/7/2016, you wrote: >>> >>> I would not want a guard that hides the switch position. If a guard is c losed I want it to be confirmation of the switch position. Most aviation gua rds do that and further they suggest that the switch is important enough to n ot touch without thinking about it a moment. Too many guarded switches actua lly destroys that little bit of psychological protection.\ >> >> Most off-the-shelf switch covers will force the >> switch to one side when closed. Operating the switch >> requires that the cover be opened before the switch >> can be moved . . . and the cover must remain open. >> Closing the cover forces the switch back. >> >> You have to work pretty hard to find covers that >> allow 'protection' in either switch position. >> >> Bob . . . >> >


    Message 9


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    Time: 01:18:00 PM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: Essential Bus Switch
    It's more an 'endurance bus' than an 'essential bus'. It was designed to conserve energy and used to power devices most useful to sustaining comfortable en-route phase of flight. I am curious. There are hundreds of thousands of light aircraft manufactured and, I presume, successfully flown without benefit of protected switches of any kind. What is so different about the OBAM aviation aircraft, the designers, builders and users of these aircraft that make protected switches so attractive . . . or even a good idea? Bob . . .


    Message 10


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    Time: 01:37:46 PM PST US
    From: "Rene" <rene@felker.com>
    Subject: Essential Bus Switch
    More "Stuff", more changes, and less ergonomic design and testing. I know in my airplane I have switches on everything...I could live without some of them. But then I would have to use the breaker as a switch if I really needed to turn items off. Rene' 801-721-6080 From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L. Nuckolls, III Sent: Thursday, April 07, 2016 2:17 PM Subject: Re: AeroElectric-List: Essential Bus Switch It's more an 'endurance bus' than an 'essential bus'. It was designed to conserve energy and used to power devices most useful to sustaining comfortable en-route phase of flight. I am curious. There are hundreds of thousands of light aircraft manufactured and, I presume, successfully flown without benefit of protected switches of any kind. What is so different about the OBAM aviation aircraft, the designers, builders and users of these aircraft that make protected switches so attractive . . . or even a good idea? Bob . . .




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