AeroElectric-List Digest Archive

Tue 09/27/16


Total Messages Posted: 6



Today's Message Index:
----------------------
 
     1. 01:21 AM - Re: Connecting Shielded Cable to DB-25 (Sebastien)
     2. 01:25 AM - Re: Connecting Shielded Cable to DB-25 (Sebastien)
     3. 05:12 AM - Re: Connecting Shielded Cable to DB-25 (Art Zemon)
     4. 05:13 AM - Re: solder splices (bob noffs)
     5. 05:40 AM - Re: solder splices (Robert L. Nuckolls, III)
     6. 04:58 PM - Re: solder splices (bob noffs)
 
 
 


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: 01:21:47 AM PST US
    From: Sebastien <cluros@gmail.com>
    Subject: Re: Connecting Shielded Cable to DB-25
    I would connect the shield to ground at the wing tip end Art, not at the win g root end. Sebastien > On Sep 27, 2016, at 03:05, Art Zemon <art@zemon.name> wrote: > > Folks, > > I need to connect a shielded cable to my DB-25 connector and I need some a dvice about how to physically construct this. Here is the wiring diagram > =8B > strobe position lights.pdf > =8B > I am concerned with the construction of wires LIGHTS-1-C and LIGHTS-1-D at the wing root. Specifically, the center conductor of the cable is to be con nected to a pin in the DB-25. The shield is to be connected to a local groun d. This connector (when operating) will be inside the tubular spar of my Bed e BD-4C, so the whole assembly will be well shielded; I'm not worried about h ow many unshielded inches I have near the DB-25. > > This is what I think will work: Strip the outer insulation of the shielded cable back several inches, so that I can separate the shield from the cente r conductor outside the DB-25 housing. Solder a sufficient amount of wire to the shield so that I can work with it and attach it to the local ground. Ru n the center conductor to the DB-25 and connect it to a pin just like any ot her wire. > > Your thoughts? > > Thank you, > -- Art Z. > > -- > https://CheerfulCurmudgeon.com/ > > "If I am not for myself, who is for me? And if I am only for myself, what a m I? And if not now, when?" Hillel


    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: 01:25:40 AM PST US
    From: Sebastien <cluros@gmail.com>
    Subject: Re: Connecting Shielded Cable to DB-25
    Whoops, disregard last message, I see you are talking about the wire from th e cabin. Any reason you can't just ground it at the switch? Sebastien > On Sep 27, 2016, at 03:05, Art Zemon <art@zemon.name> wrote: > > Folks, > > I need to connect a shielded cable to my DB-25 connector and I need some a dvice about how to physically construct this. Here is the wiring diagram > =8B > strobe position lights.pdf > =8B > I am concerned with the construction of wires LIGHTS-1-C and LIGHTS-1-D at the wing root. Specifically, the center conductor of the cable is to be con nected to a pin in the DB-25. The shield is to be connected to a local groun d. This connector (when operating) will be inside the tubular spar of my Bed e BD-4C, so the whole assembly will be well shielded; I'm not worried about h ow many unshielded inches I have near the DB-25. > > This is what I think will work: Strip the outer insulation of the shielded cable back several inches, so that I can separate the shield from the cente r conductor outside the DB-25 housing. Solder a sufficient amount of wire to the shield so that I can work with it and attach it to the local ground. Ru n the center conductor to the DB-25 and connect it to a pin just like any ot her wire. > > Your thoughts? > > Thank you, > -- Art Z. > > -- > https://CheerfulCurmudgeon.com/ > > "If I am not for myself, who is for me? And if I am only for myself, what a m I? And if not now, when?" Hillel


    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: 05:12:15 AM PST US
    From: Art Zemon <art@zemon.name>
    Subject: Re: Connecting Shielded Cable to DB-25
    On Mon, Sep 26, 2016 at 9:32 PM, Charlie England <ceengland7@gmail.com> wrote: > On 9/26/2016 9:05 PM, Art Zemon wrote: > > Folks, > > I need to connect a shielded cable to my DB-25 connector and I need some > advice about how to physically construct this.... > > Art, > > I believe Bob has a 'cookbook' page showing that technique for handling > shields at sub-d connectors. You should be fine. > I found it: Shield Termination Techniques <http://www.aeroelectric.com/articles/pigtail/pigtail.html> I can adapt that nicely. Thank you, Charlie. -- Art Z. -- https://CheerfulCurmudgeon.com/ *"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel*


    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: 05:13:50 AM PST US
    From: bob noffs <icubob@gmail.com>
    Subject: Re: solder splices
    i agree that the joint if undisturbed can't be beat. i was questioning if movement would become a factor in the condition i described. bob noffs On Mon, Sep 26, 2016 at 10:17 AM, Roger <rnjcurtis@charter.net> wrote: > > > i know solder connections are generally frowned on, especially in engine > compartment but my take on a solder splice in the middle of a 6'' run with > the wire bundled with 6 others is that it is totally satisfactory. am i > wrong that solder is ok if you pick your application sites? > > > *I was never aware that solder connections were frowned upon! In fact my > belief is that a well executed solder connection, with good mechanical > connection, good solder flow, and a double insulation with heat shrink, is > in fact more reliable than any other connection, over the long term. Just > my humble opinion!* > > > *Roger* > >


    Message 5


  • 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: 05:40:11 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: solder splices
    At 07:07 AM 9/26/2016, you wrote: >hi all, >=C2 i know solder connections are generally >frowned on, especially in engine compartment but >my take on a solder splice in the middle of a >6'' run with the wire bundled with 6 others is >that it is totally satisfactory. am i wrong that >solder is ok if you pick your application sites? >=C2 bob noffs I don't know why it wouldn't be just fine ANYWHERE the materials, talents and tools are likely to produce a serviceable joining . . . irrespective of location. Soldering was 'frowned upon' on the 1960's production lines at Cessna because soldering irons burned people and melted carpets. At Boeing, I had to have a fireman come out and give me a permit to plug in an iron . . . just to make sure I wasn't working the task close to flammables. It's process sensitive (meaning you gotta have the moves). But an artfully crafted solder joint is no more/less risky to meeting design goals than a crimped connection. Bob . . .


    Message 6


  • 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: 04:58:38 PM PST US
    From: bob noffs <icubob@gmail.com>
    Subject: Re: solder splices
    ok, away we go. i like my soldered joints more than any crimped joint cuz i made them. bob On Tue, Sep 27, 2016 at 7:36 AM, Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > At 07:07 AM 9/26/2016, you wrote: > > hi all, > =C3=82 i know solder connections are generally frowned on, especially in engine > compartment but my take on a solder splice in the middle of a 6'' run wit h > the wire bundled with 6 others is that it is totally satisfactory. am i > wrong that solder is ok if you pick your application sites? > =C3=82 bob noffs > > > I don't know why it wouldn't be just fine ANYWHERE > the materials, talents and tools are likely to > produce a serviceable joining . . . irrespective > of location. > > Soldering was 'frowned upon' on the 1960's > production lines at Cessna because soldering irons > burned people and melted carpets. At Boeing, I had > to have a fireman come out and give me a permit > to plug in an iron . . . just to make sure I wasn't > working the task close to flammables. It's process > sensitive (meaning you gotta have the moves). > But an artfully crafted solder joint is no > more/less risky to meeting design goals than > a crimped connection. > > > Bob . . . >




    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! --