AeroElectric-List Digest Archive

Tue 08/29/06


Total Messages Posted: 24



Today's Message Index:
----------------------
 
     1. 01:01 AM - Re: Turn on ALT before engine start? (Yes) ()
     2. 07:09 AM - Re: Turn on ALT before engine start? (Robert L. Nuckolls, III)
     3. 07:35 AM - Re: Turn on ALT before engine start? (Hopperdhh@aol.com)
     4. 08:39 AM - Re: Turn on ALT before engine start? (Robert L. Nuckolls, III)
     5. 12:40 PM - HAND HELD COM ANTENNA CONNECTION (6440 Auto Parts)
     6. 03:13 PM - Re: HAND HELD COM ANTENNA CONNECTION (Brian Lloyd)
     7. 05:03 PM - Wiring diagram software (Eric Parlow)
     8. 06:01 PM - Wire drawing software (Garland Edwards)
     9. 06:12 PM - Garmin D sub pin removal ?? (Deems Davis)
    10. 06:29 PM - Re: Garmin D sub pin removal ?? (Ralph E. Capen)
    11. 06:32 PM - Re: Wire drawing software (Bill Boyd)
    12. 06:36 PM - Re: Garmin D sub pin removal ?? (A DeMarzo)
    13. 06:49 PM - Re: Garmin D sub pin removal ?? (William Gill)
    14. 06:53 PM - Re: HAND HELD COM ANTENNA CONNECTION (FLYaDIVE@aol.com)
    15. 06:56 PM - Re: Wire drawing software (Dave N6030X)
    16. 07:03 PM - Re: Garmin D sub pin removal ?? (Robert L. Nuckolls, III)
    17. 07:07 PM - Re: "Paddle Type" Flap position switch? (Larry Rosen)
    18. 07:17 PM - Re: Garmin D sub pin removal ?? (DonVS)
    19. 08:03 PM - Dynon D10A Boom AOA ()
    20. 08:12 PM - Re: Wiring diagram software (earl_schroeder@juno.com)
    21. 09:02 PM - Re: Garmin D sub pin removal ?? (A DeMarzo)
    22. 09:15 PM - Re: Wiring diagram software (Brian Lloyd)
    23. 09:50 PM - Re: HAND HELD COM ANTENNA CONNECTION (Ed Holyoke)
    24. 10:05 PM - Re: HAND HELD COM ANTENNA CONNECTION (DonVS)
 
 
 


Message 1


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    Time: 01:01:22 AM PST US
    From: <gmcjetpilot@yahoo.com>
    Subject: Re: Turn on ALT before engine start? (Yes)
    >From: "Bill Denton" <bdenton@bdenton.com> > >In an airplane equipped with a Continental 0-200, would you want to >turn on the ALT switch before engine start, or after? Bill: If it's a certified plane do what the AFM, AOM or check list call for. Most AFM's tell you to turn the MASTER switch on together before start and off together after start, and they even make it easy for you with a single split switch. I agree it probably does not matter. My opinion is given the choice, turn the battery and ALT on at the same time before start. That way you will not forget. There really is no advantage in making multiple steps for yourself. Its a single engine plane not a B737. Less is more. Once on (bat/alt) together, once off together. I assume this is a factory plane (Cessna) and not an experimental. If it's an experimental with an internally regulated (ND) Nippon Denso alternator, I highly, highly recommend turning the "ALT" on before engine start and leave the ALT on until the engine shut downs. ND's are designed to turn themselves on and off as needed. Forcing it while spinning is not necessary and even counter productive. Cheers George --------------------------------- Get your email and more, right on the new Yahoo.com


    Message 2


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    Time: 07:09:26 AM PST US
    From: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
    Subject: Re: Turn on ALT before engine start?
    --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net> At 05:55 AM 8/28/2006 -0700, you wrote: >--> AeroElectric-List message posted by: "Bill Denton" <bdenton@bdenton.com> > >In an airplane equipped with a Continental 0-200, would you want to turn >on the ALT switch before engine start, or after? It makes no difference. The arguments for and against either philosophy are not backed by good science meaning that effects cited as undesirable are so weak as to be insignificant. This presumes that you have a "controllable" alternator, i.e. a separately regulated machine wherein the panel mounted alternator switch has control over the alternator's field supply. The present state of the art for control systems intended to bring some measure of protection against failures of internally regulated alternators offers a means by which the machine can be damaged if inadvertently turned off by disconnection of the b-lead which produces a load-dump that can be deleterious to the alternator. Many internally regulated alternators cannot withstand their own load dumps. In these cases, one may turn the alternator ON at any time but it's prudent to wait until the engine stops turning to turn it OFF. In the mean time, know that a control system for internally regulated alternators is "in the works" with an achievable goal of making the IR alternator behave as if it were an externally regulated machine. This will offer the OBAM aircraft builder the option of using the stock internally regulated alternator as a form-fit-function replacement for the traditional externally regulated system at a fraction of the cost and without giving up functionality or control Bob . . . --------------------------------------------------------- < What is so wonderful about scientific truth...is that > < the authority which determines whether there can be > < debate or not does not reside in some fraternity of > < scientists; nor is it divine. The authority rests > < with experiment. > < --Lawrence M. Krauss > ---------------------------------------------------------


    Message 3


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    Time: 07:35:31 AM PST US
    From: Hopperdhh@aol.com
    Subject: Re: Turn on ALT before engine start?
    In a message dated 8/29/2006 10:16:33 A.M. Eastern Daylight Time, nuckollsr@cox.net writes: In the mean time, know that a control system for internally regulated alternators is "in the works" with an achievable goal of making the IR alternator behave as if it were an externally regulated machine. This will offer the OBAM aircraft builder the option of using the stock internally regulated alternator as a form-fit-function replacement for the traditional externally regulated system at a fraction of the cost and without giving up functionality or control Bob . . . I'm really glad to hear that this is in the works, Bob. Even thought I am pretty familiar with alternators and regulators, the Van's 60 amp internally regulated alternator on my airplane is a "black box." I have no idea what function the 2 wires that run from the "field" breaker to the alternator serve. I believe it is a Nippondenso system. In the meantime, do you know of any available documentation which would reveal any details of its operation? Dan Hopper RV-7A


    Message 4


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    Time: 08:39:04 AM PST US
    From: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
    Subject: Re: Turn on ALT before engine start?
    --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net> At 10:34 AM 8/29/2006 -0400, you wrote: >In a message dated 8/29/2006 10:16:33 A.M. Eastern Daylight Time, >nuckollsr@cox.net writes: > In the mean time, know that a control system for internally > regulated alternators is "in the works" with an achievable > goal of making the IR alternator behave as if it were > an externally regulated machine. This will offer the > OBAM aircraft builder the option of using the stock > internally regulated alternator as a form-fit-function > replacement for the traditional externally regulated > system at a fraction of the cost and without giving > up functionality or control > > Bob . . . >I'm really glad to hear that this is in the works, Bob. Even thought I am >pretty familiar with alternators and regulators, the Van's 60 amp >internally regulated alternator on my airplane is a "black box." I have >no idea what function the 2 wires that run from the "field" breaker to the >alternator serve. I believe it is a Nippondenso system. In the meantime, >do you know of any available documentation which would reveal any details >of its operation? Not that I've been made privy to. That's a major stumbling block for my personal approach to systems integration, failure mode effects analysis and mitigation. I'm going to look at an alternator drive stand this weekend that I'm told is a 2+ hp machine with variable speed drive and isn't covered in more barn-bird-crap than one would want to wash into the gutters in front of my house. If this machine can be resurrected, I'll be able to characterize the performance of any product one wishes to examine. I have a couple of alternators here now that came from folks on the List that I want to put into a Z-11 mock-up and characterize their performance and/or failures. It seems unlikely that we'll ever be privy to detailed inner workings of all the options out there. I'll suggest a prudent approach that assumes nothing. Bob . . . --------------------------------------------------------- < What is so wonderful about scientific truth...is that > < the authority which determines whether there can be > < debate or not does not reside in some fraternity of > < scientists; nor is it divine. The authority rests > < with experiment. > < --Lawrence M. Krauss > ---------------------------------------------------------


    Message 5


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    Time: 12:40:26 PM PST US
    From: "6440 Auto Parts" <sales@6440autoparts.com>
    Subject: HAND HELD COM ANTENNA CONNECTION
    --> AeroElectric-List message posted by: "6440 Auto Parts" <sales@6440autoparts.com> I was just looking at http://www.aeroelectric.com/articles/commtap/commtap.html and if I understand it correctly this will break the antenna connection from the in dash com (disabling it)and allow the hand help to use the antenna. I would prefer to be able to use both radio's at once if needed. I have read here on Aeroelectric that a "t" type bnc connector will cause the antenna to loose some of it's range. Is there a better way to use both radios at the same time ? Randy


    Message 6


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    Time: 03:13:23 PM PST US
    From: Brian Lloyd <brian-av@lloyd.com>
    Subject: Re: HAND HELD COM ANTENNA CONNECTION
    --> AeroElectric-List message posted by: Brian Lloyd <brian-av@lloyd.com> On Aug 29, 2006, at 12:40 PM, 6440 Auto Parts wrote: > --> AeroElectric-List message posted by: "6440 Auto Parts" > <sales@6440autoparts.com> > > I was just looking at http://www.aeroelectric.com/articles/ > commtap/commtap.html and if I understand it correctly this will > break the antenna connection from the in dash com (disabling it)and > allow the hand help to use the antenna. I would prefer to be able > to use both radio's at once if needed. I have read here on > Aeroelectric that a "t" type bnc connector will cause the antenna > to loose some of it's range. Is there a better way to use both > radios at the same time ? There is no good way to connect two radios that operate in the same band to the same antenna, i.e. you can't connect two comm radios to the same antenna. If you put in a 'T' connector to connect both radios to the same antenna, odds are very good that the first time you transmit on one radio you will destroy the other. So the best answer is, "add another antenna." If you want to connect a handheld radio to your regular comm antenna, bring the com antenna coax to a place you can readily reach (like just under the leading edge of the panel) and terminate it with a BNC female connector. Bring the coax from your comm radio to the same place terminated in a BNC male. Connect them together. If you need to plug your hand-held into the comm antenna because your main comm has failed, reach under the panel, disconnect the BNC male from the regular comm, and attach the antenna cable from your handheld to the now-free BNC female that goes to the antenna. Brian Lloyd 361 Catterline Way brian HYPHEN av AT lloyd DOT com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . Antoine de Saint-Exupry


    Message 7


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    Time: 05:03:39 PM PST US
    From: "Eric Parlow" <ericparlow@hotmail.com>
    Subject: Wiring diagram software
    --> AeroElectric-List message posted by: "Eric Parlow" <ericparlow@hotmail.com> What software is available to make wiring diagrams at a reasonable cost? Eric Parlow RV-10 Avionics


    Message 8


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    Time: 06:01:40 PM PST US
    From: "Garland Edwards" <eddieedwards@mindspring.com>
    Subject: Wire drawing software
    Look at this one: Capilano Computing 1641 Lonsdale Avenue, Suite 603 North Vancouver, B.C., V7M 2J5 CANADA TRANSACTION RECEIPT Phone: (604) 522-6200 Fax: (604) 522-3972 email: info@capilano.com www: www.capilano.com I tried the trial version and loved it. Then purchased. With all the blocks to drag and drop and neat wring, it makes doing schematics fun. I have AutoCad but this software is too easy. Happy building and flying, Ed RV7 in the works.


    Message 9


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    Time: 06:12:15 PM PST US
    From: Deems Davis <deemsdavis@cox.net>
    Subject: Garmin D sub pin removal ??
    --> AeroElectric-List message posted by: Deems Davis <deemsdavis@cox.net> What's the secret to removal of the SMALL Garmin machined pins (as in the GMA 340) from a Dsub connector? The tool for the larger pins won't fit, I thought I heard someone say they used a paperclip filed flat, and I've tried that to no avail yet. Would appreciate any suggestions as I've mis placed some pins. Deems Davis # 406 Fuse/Finishing/Panel http://deemsrv10.com/


    Message 10


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    Time: 06:29:22 PM PST US
    From: "Ralph E. Capen" <recapen@earthlink.net>
    Subject: Re: Garmin D sub pin removal ??
    --> AeroElectric-List message posted by: "Ralph E. Capen" <recapen@earthlink.net> Check the archives - recently there was a thread on pins and there was a picture of two different tools red for the 'normal' size and green (IIRC) for the high density. I don't remember which list but it was within the last few days.....I have the other tool - I'll try to remember this weekend to get part num...... Ralph ----- Original Message ----- From: "Deems Davis" <deemsdavis@cox.net> Sent: Tuesday, August 29, 2006 9:11 PM Subject: AeroElectric-List: Garmin D sub pin removal ?? > --> AeroElectric-List message posted by: Deems Davis <deemsdavis@cox.net> > > What's the secret to removal of the SMALL Garmin machined pins (as in the > GMA 340) from a Dsub connector? The tool for the larger pins won't fit, I > thought I heard someone say they used a paperclip filed flat, and I've > tried that to no avail yet. Would appreciate any suggestions as I've mis > placed some pins. > > Deems Davis # 406 > Fuse/Finishing/Panel > http://deemsrv10.com/ > > >


    Message 11


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    Time: 06:32:45 PM PST US
    From: "Bill Boyd" <sportav8r@gmail.com>
    Subject: Re: Wire drawing software
    --> AeroElectric-List message posted by: "Bill Boyd" <sportav8r@gmail.com> Did you go with "Lite" or the full version? On 8/29/06, Garland Edwards <eddieedwards@mindspring.com> wrote: > > > Look at this one: > > Capilano Computing > 1641 Lonsdale Avenue, Suite 603 > North Vancouver, B.C., V7M 2J5 > CANADA TRANSACTION RECEIPT > > Phone: (604) 522-6200 > Fax: (604) 522-3972 > email: info@capilano.com > www: www.capilano.com > > > I tried the trial version and loved it. Then purchased. > With all the blocks to drag and drop and neat wring, it makes doing > schematics fun. > I have AutoCad but this software is too easy. > > Happy building and flying, > > Ed > RV7 in the works. > > > http://www.matronics.com/Navigator?AeroElectric-List > >


    Message 12


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    Time: 06:36:59 PM PST US
    From: "A DeMarzo" <planepubs@ev1.net>
    Subject: Re: Garmin D sub pin removal ??
    I've removed those pins with the throwaway removers. Make sure you're using the correct color, which naturally escapes me now. I've also broken a few of those plastic tools on them. Al On 08/29/2006 8:11:26 PM, Deems Davis (deemsdavis@cox.net) wrote: > --> AeroElectric-List message posted by: Deems Davis <deemsdavis@cox.net> > > What's the secret to removal of the SMALL Garmin machined pins (as in > the GMA 340) from a Dsub connector? The tool for the larger pins won't > > fit, I thought I heard someone say they used a paperclip filed flat, and > I've tried that to no avail yet. Would appreciate any suggestions as > I've > mis placed some pins. > > Deems Davis # 406 > Fuse/Finishing/Panel > http://deemsrv10.com/ > > > > >


    Message 13


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    Time: 06:49:41 PM PST US
    From: "William Gill" <wgill10@comcast.net>
    Subject: Garmin D sub pin removal ??
    --> AeroElectric-List message posted by: "William Gill" <wgill10@comcast.net> Go to: http://www.steinair.com/connectors.htm SAT-034 is for the high density pins -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Deems Davis Sent: Tuesday, August 29, 2006 8:11 PM Subject: AeroElectric-List: Garmin D sub pin removal ?? --> AeroElectric-List message posted by: Deems Davis <deemsdavis@cox.net> What's the secret to removal of the SMALL Garmin machined pins (as in the GMA 340) from a Dsub connector? The tool for the larger pins won't fit, I thought I heard someone say they used a paperclip filed flat, and I've tried that to no avail yet. Would appreciate any suggestions as I've mis placed some pins. Deems Davis # 406 Fuse/Finishing/Panel http://deemsrv10.com/


    Message 14


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    Time: 06:53:00 PM PST US
    From: FLYaDIVE@aol.com
    Subject: Re: HAND HELD COM ANTENNA CONNECTION
    --> AeroElectric-List message posted by: FLYaDIVE@aol.com In a message dated 8/29/06 5:19:47 PM Eastern Daylight Time, sales@6440autoparts.com writes: > I was just looking at > http://www.aeroelectric.com/articles/commtap/commtap.html and if I > understand it correctly this will break the antenna connection from the in > dash com (disabling it)and allow the hand help to use the antenna. I would > prefer to be able to use both radio's at once if needed. I have read here on > > Aeroelectric that a "t" type bnc connector will cause the antenna to loose > some of it's range. Is there a better way to use both radios at the same > time ? > > Randy =============================== Randy: I hope someone got to you sooner than I on your question? You CANNOT use a 'T' fitting to use both radios at the same time. The HUGE problem in doing so is that when you TRANSMIT the output of one radio will go directly into the other radio and BLOWOUT that radio. And since there is also a mismatch it could even do damage to the transmit radio, The ONLY way I know of to use one antenna and two radios is to disconnect one radio from the antenna. Which brings up a second problem. When you disconnect the panel Com it is sitting without an antenna/load. If you were to hit the transmit button on the stick you could blow the output circuit of the Com radio. Best way around this is to have two antennas. Second best way is to shout off the panel Com radio when using the HH radio. Barry "Chop'd Liver" "Show them the first time, correct them the second time, kick them the third time." Yamashiada


    Message 15


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    Time: 06:56:01 PM PST US
    From: Dave N6030X <N6030X@DaveMorris.com>
    Subject: Re: Wire drawing software
    --> AeroElectric-List message posted by: Dave N6030X <N6030X@DaveMorris.com> I second that. Tried several different ones that all seemed to have been written by engineers with way too much DOS influence. The Capilano software is cheap and intuitive and has a very short learning curve. Downside is that you won't be able to exchange drawings with anybody. But you'll be able to whip out schematics like the ones at the bottom of http://www.davemorris.com/PhotoViewer.cfm?Subdirectory=Dragonfly%20Electrical in no time at all. Dave Morris At 07:59 PM 8/29/2006, you wrote: >Look at this one: > >Capilano Computing >1641 Lonsdale Avenue, Suite 603 >North Vancouver, B.C., V7M 2J5 >CANADA TRANSACTION RECEIPT > >Phone: (604) 522-6200 >Fax: (604) 522-3972 >email: <mailto:info@capilano.com>info@capilano.com >www: <http://www.capilano.com>www.capilano.com > > >I tried the trial version and loved it. Then purchased. >With all the blocks to drag and drop and neat wring, it makes doing >schematics fun. >I have AutoCad but this software is too easy. > >Happy building and flying, > >Ed >RV7 in the works. > > ><http://www.matronics.com/Navigator?AeroElectric-List>http://www.matronics.com/Navigator?AeroElectric-List ><http://www.matronics.com/contribution>http://www.matronics.com/contribution >


    Message 16


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    Time: 07:03:19 PM PST US
    From: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
    Subject: Re: Garmin D sub pin removal ??
    --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net> At 06:11 PM 8/29/2006 -0700, you wrote: >--> AeroElectric-List message posted by: Deems Davis <deemsdavis@cox.net> > >What's the secret to removal of the SMALL Garmin machined pins (as in the >GMA 340) from a Dsub connector? The tool for the larger pins won't fit, I >thought I heard someone say they used a paperclip filed flat, and I've >tried that to no avail yet. Would appreciate any suggestions as I've mis >placed some pins. You need a tool like http://www.aeroelectric.com/Mfgr_Data/Connectors/AMP_Tyco/91285-1_Extraction_Tool.pdf which offers interchangeable blades for working both the 20 and 22HD sized d-sub connectors. DigiKey offers this tool in the upper end of right hand column at: http://dkc3.digikey.com/PDF/T062/0181.pdf Bob . . .


    Message 17


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    Time: 07:07:42 PM PST US
    From: Larry Rosen <LarryRosen@comcast.net>
    Subject: Re: "Paddle Type" Flap position switch?
    --> AeroElectric-List message posted by: Larry Rosen <LarryRosen@comcast.net> Avionics Systems has one. Quite pricey at $90 each. See it here <http://www.avionikits.com/>. Or maybe ebay. Here was a Cessna 150 switch that sold for $9. <http://cgi.ebay.com/ebaymotors/Cessna150-Flap-Switch_W0QQitemZ190020853902QQcmdZViewItem> Larry Rosen RV10 #356 Deems Davis wrote: > --> AeroElectric-List message posted by: Deems Davis <deemsdavis@cox.net> > > I've searched in vain for a flap position switch which has a wide > broad flat paddle for the toggle, similar to what Cessna uses. anybody > know where you can pick one of the up? > > Deems Davis # 406 > Fuse/Finishing/Panel > http://deemsrv10.com/ > >


    Message 18


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    Time: 07:17:26 PM PST US
    From: "DonVS" <dsvs@comcast.net>
    Subject: Garmin D sub pin removal ??
    --> AeroElectric-List message posted by: "DonVS" <dsvs@comcast.net> Steinair has it. It is part 2 SAT-034 -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Deems Davis Sent: Tuesday, August 29, 2006 6:11 PM Subject: AeroElectric-List: Garmin D sub pin removal ?? --> AeroElectric-List message posted by: Deems Davis <deemsdavis@cox.net> What's the secret to removal of the SMALL Garmin machined pins (as in the GMA 340) from a Dsub connector? The tool for the larger pins won't fit, I thought I heard someone say they used a paperclip filed flat, and I've tried that to no avail yet. Would appreciate any suggestions as I've mis placed some pins. Deems Davis # 406 Fuse/Finishing/Panel http://deemsrv10.com/


    Message 19


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    Time: 08:03:52 PM PST US
    Subject: Dynon D10A Boom AOA
    From: <rparigor@SUFFOLK.LIB.NY.US>
    --> AeroElectric-List message posted by: <rparigor@suffolk.lib.ny.us> I have a Dynon D10A. Would be nice to use the AOA feature. Already have a pitot/static under wing of my Europa. I am thinking a probe high up on the rudder may work and not complicate rigging the wings or hurting anything when wings go on trailer. Dynon sells a boom mount AOA/pitot, part number is 100532-000 but it is 1" in diameter and has a pitot. I am thinking something like a thin wall 5/16" or 1/4" tube, with 1" of the tip turned up, flattened, and plugged up and a hole drilled. Has anyone mounted a AOA on rudder? Know where to buy one? Made one? Thx. Ron Parigoris


    Message 20


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    Time: 08:12:04 PM PST US
    From: "earl_schroeder@juno.com" <earl_schroeder@juno.com>
    Subject: Re: Wiring diagram software
    --> AeroElectric-List message posted by: "earl_schroeder@juno.com" <earl_schroeder@juno.com> Try this for starters: http://www.matronics.com/searching/ws_script_short.cgi -- "Eric Parlow" <ericparlow@hotmail.com> wrote: --> AeroElectric-List message posted by: "Eric Parlow" <ericparlow@hotmail.com> What software is available to make wiring diagrams at a reasonable cost? Eric Parlow RV-10 Avionics


    Message 21


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    Time: 09:02:46 PM PST US
    From: "A DeMarzo" <planepubs@ev1.net>
    Subject: Re: Garmin D sub pin removal ??
    --> AeroElectric-List message posted by: "A DeMarzo" <planepubs@ev1.net> Yes, it was the green color tool that I used/abused! Thanks Bill. ----- Original Message ----- From: "William Gill" <wgill10@comcast.net> Sent: Tuesday, August 29, 2006 8:48 PM Subject: RE: AeroElectric-List: Garmin D sub pin removal ?? > --> AeroElectric-List message posted by: "William Gill" > <wgill10@comcast.net> > > Go to: > http://www.steinair.com/connectors.htm > > SAT-034 is for the high density pins


    Message 22


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    Time: 09:15:51 PM PST US
    From: Brian Lloyd <brian-av@lloyd.com>
    Subject: Re: Wiring diagram software
    --> AeroElectric-List message posted by: Brian Lloyd <brian-av@lloyd.com> On Aug 29, 2006, at 5:01 PM, Eric Parlow wrote: > --> AeroElectric-List message posted by: "Eric Parlow" > <ericparlow@hotmail.com> > > What software is available to make wiring diagrams at a reasonable > cost? How about an engineering notebook and a Sharpie. Brian Lloyd 361 Catterline Way brian HYPHEN av AT lloyd DOT com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . Antoine de Saint-Exupry


    Message 23


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    Time: 09:50:00 PM PST US
    From: "Ed Holyoke" <bicyclop@pacbell.net>
    Subject: HAND HELD COM ANTENNA CONNECTION
    --> AeroElectric-List message posted by: "Ed Holyoke" <bicyclop@pacbell.net> There actually is a way to use two Com radios on one antenna. Bob Archer sells an antenna switch that connects both radios while receiving and disconnects the passive radio when either transmits. I think he can be reached at: bobsantennas@earthlink.net Google him up and you'll find all kinds of interesting stuff. Pax, Ed Holyoke -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of FLYaDIVE@aol.com Sent: Tuesday, August 29, 2006 6:52 PM Subject: Re: AeroElectric-List: HAND HELD COM ANTENNA CONNECTION --> AeroElectric-List message posted by: FLYaDIVE@aol.com In a message dated 8/29/06 5:19:47 PM Eastern Daylight Time, sales@6440autoparts.com writes: > I was just looking at > http://www.aeroelectric.com/articles/commtap/commtap.html and if I > understand it correctly this will break the antenna connection from the in > dash com (disabling it)and allow the hand help to use the antenna. I would > prefer to be able to use both radio's at once if needed. I have read here on > > Aeroelectric that a "t" type bnc connector will cause the antenna to loose > some of it's range. Is there a better way to use both radios at the same > time ? > > Randy =============================== Randy: I hope someone got to you sooner than I on your question? You CANNOT use a 'T' fitting to use both radios at the same time. The HUGE problem in doing so is that when you TRANSMIT the output of one radio will go directly into the other radio and BLOWOUT that radio. And since there is also a mismatch it could even do damage to the transmit radio, The ONLY way I know of to use one antenna and two radios is to disconnect one radio from the antenna. Which brings up a second problem. When you disconnect the panel Com it is sitting without an antenna/load. If you were to hit the transmit button on the stick you could blow the output circuit of the Com radio. Best way around this is to have two antennas. Second best way is to shout off the panel Com radio when using the HH radio. Barry "Chop'd Liver" "Show them the first time, correct them the second time, kick them the third time." Yamashiada


    Message 24


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    Time: 10:05:51 PM PST US
    From: "DonVS" <dsvs@comcast.net>
    Subject: HAND HELD COM ANTENNA CONNECTION
    --> AeroElectric-List message posted by: "DonVS" <dsvs@comcast.net> Ed, Comant also sells the same thing. Don -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Ed Holyoke Sent: Tuesday, August 29, 2006 9:48 PM Subject: RE: AeroElectric-List: HAND HELD COM ANTENNA CONNECTION --> AeroElectric-List message posted by: "Ed Holyoke" <bicyclop@pacbell.net> There actually is a way to use two Com radios on one antenna. Bob Archer sells an antenna switch that connects both radios while receiving and disconnects the passive radio when either transmits. I think he can be reached at: bobsantennas@earthlink.net Google him up and you'll find all kinds of interesting stuff. Pax, Ed Holyoke -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of FLYaDIVE@aol.com Sent: Tuesday, August 29, 2006 6:52 PM Subject: Re: AeroElectric-List: HAND HELD COM ANTENNA CONNECTION --> AeroElectric-List message posted by: FLYaDIVE@aol.com In a message dated 8/29/06 5:19:47 PM Eastern Daylight Time, sales@6440autoparts.com writes: > I was just looking at > http://www.aeroelectric.com/articles/commtap/commtap.html and if I > understand it correctly this will break the antenna connection from the in > dash com (disabling it)and allow the hand help to use the antenna. I would > prefer to be able to use both radio's at once if needed. I have read here on > > Aeroelectric that a "t" type bnc connector will cause the antenna to loose > some of it's range. Is there a better way to use both radios at the same > time ? > > Randy =============================== Randy: I hope someone got to you sooner than I on your question? You CANNOT use a 'T' fitting to use both radios at the same time. The HUGE problem in doing so is that when you TRANSMIT the output of one radio will go directly into the other radio and BLOWOUT that radio. And since there is also a mismatch it could even do damage to the transmit radio, The ONLY way I know of to use one antenna and two radios is to disconnect one radio from the antenna. Which brings up a second problem. When you disconnect the panel Com it is sitting without an antenna/load. If you were to hit the transmit button on the stick you could blow the output circuit of the Com radio. Best way around this is to have two antennas. Second best way is to shout off the panel Com radio when using the HH radio. Barry "Chop'd Liver" "Show them the first time, correct them the second time, kick them the third time." Yamashiada




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