AeroElectric-List Digest Archive

Thu 01/09/14


Total Messages Posted: 4



Today's Message Index:
----------------------
 
     1. 07:06 AM - Re: Re: Thoughts on a few electrical system configurations? (Robert L. Nuckolls, III)
     2. 07:11 AM - Re: Re: Proposed new Z diagram? (Robert L. Nuckolls, III)
     3. 09:41 AM - Intercom Install (Saad Mahaini)
     4. 10:02 AM - DYI Marker Beacon Antena (MLE)
 
 
 


Message 1


  • INDEX
  • Back to Main INDEX
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 07:06:34 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: Thoughts on a few electrical system configurations?
    At 04:37 PM 1/8/2014, you wrote: > >David, > >Suggest you also consider 60A primary alt. and 20A secondary alt. >Set the regulator on the secondary 0.5V lower than primary >regulator. I have this in my all glass RV10. After 3 years, I had a >primary alt. failure due to spun bearing shorting out the winding. >Bus voltage dropped 0.5V as expected; the secondary alt. picked up >the slack and we completed our flight at our leisure. With 20A I can >keep everything lit up indefinitely except my heated pitot and >landing lights. No bus switching or load shedding necessary. This philosophy is described in Figure Z-12 which is representative of standby alternator installations on what must now be more than a thousand TC Bonanzas, Mooneys, Pipers and Cessnas. Bob . . .


    Message 2


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 07:11:00 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: Proposed new Z diagram?
    At 03:56 PM 1/8/2014, you wrote: ><livingjw@earthlink.net> > >How do you know that each feed going into your diodes is working? A cogent question. Any feature added to a system intended to mitigate risk due to some failure needs to be 'monitored' for functionality. This can be a pre-flight test procedure, a data acquisition system that watches for anomalous conditions, a periodic investigation during 100 hr inspections, etc. etc. The thrust of John's question may not be obvious . . . it's important that 'failed features' not be allowed to persist as latent failures. The inability to detect such failures has a tendency to negate their benefits. Bob . . .


    Message 3


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 09:41:46 AM PST US
    From: Saad Mahaini <n5ff@yahoo.com>
    Subject: Intercom Install
    Hello to the group,=0A=0AI'm in the planning phase of installing a PS Engin eering PM3000 Intercom in the panel.=0A=0AThis unit has one switched Auxili ary Stereo Input for music, plus couple un-switched inputs for warnings, et c=0A=0AI however have two Stereo sources, a harwired Garmin AERA 560 and a music Aux input jack that i plan to install in the panel as well for extern al music players such Iphone, etc.=0A=0AThe AERA Audio has XM Stereo music, MP3 player Stereo music as well as warnings, that's the reason i like to =0Amaintain it as a stereo music/warning source and not just a mono warning source =0A=0AI like to have both sources to feed the PM3000 switched Stere o Aux Input simultaneously, not thru an A/B =0Aswitch.- =0A=0AI was wonde ring what you will=0A recommend that i use to properly combine and isolate the two inputs. =0A=0AI'm debating if i should just =0Ause passive combinin g/isolation circuit (resisters in line with both =0Asources) or if i should consider using an active circuit similar to the =0AAMX-4A (previously VX E ngineering)- or something=0A similar if such a thing exist in the market. =0A=0AJust seeking input from people that may had to cross this bridge befo re and have some recommendations=0A=0A=0AThanks=0A=0ASaad


    Message 4


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 10:02:39 AM PST US
    Subject: DYI Marker Beacon Antena
    From: MLE <rv6awingman@gmail.com>
    Roger, I followed Bob's advice when building my RV-6A. ran a piece of cable from my radio to the firewall and used a bulkhead BNC connector to get to the front side of the firewall. I then took a piece of cable about 48" long and attached a female end on that for the forward connection and proceeded to strip 40" of the sheath from the cable. Subsequently I fiberglassed that to the inside of my cowling running forward horizontally. Works fine and I've not ever forgotten to disconnect the cable from the firewall when removing the cowling. YMMV Marty, RV-6A N826ME Time: 09:07:15 AM PST US From: "Roger & Jean" <mrspudandcompany@verizon.net> Subject: AeroElectric-List: DIY Marker beacon antenna I have a wooden airplane in which I will be installing a Marker beacon receiver. My question is: Is it relatively simple to fabricate an antenna, or should I consider purchasing one? I assume it can be put on the inside of the airframe without a significant loss of signal strength. Roger




    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
  • 7-Day List Browse
  •   http://www.matronics.com/browse/aeroelectric-list
  • Browse AeroElectric-List 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.

    -- Please support this service by making your Contribution today! --