AeroElectric-List Digest Archive

Mon 04/02/18


Total Messages Posted: 11



Today's Message Index:
----------------------
 
     1. 08:26 AM - Re: AeroElectric-List Digest: 5 Msgs - 04/01/18 (David)
     2. 09:03 AM - Re: Re: AeroElectric-List Digest: 5 Msgs - 04/01/18 (Charlie England)
     3. 12:36 PM - two different Z-33 diagrams (Mickey Coggins)
     4. 03:12 PM - insulation support for crimps (Alec Myers)
     5. 03:47 PM - Re: insulation support for crimps (FLYaDIVE)
     6. 04:11 PM - Warm Toggle Switch (John)
     7. 04:30 PM - Re: Warm Toggle Switch (C&K)
     8. 04:47 PM - Re: insulation support for crimps (Charlie England)
     9. 06:40 PM - Re: Warm Toggle Switch (FLYaDIVE)
    10. 07:57 PM - Re: insulation support for crimps (Eric Page)
    11. 08:04 PM - Re: Warm Toggle Switch (Paul Eckenroth)
 
 
 


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: 08:26:48 AM PST US
    From: David <websurfshop@gmail.com>
    Subject: Re: AeroElectric-List Digest: 5 Msgs - 04/01/18
    > > =8BThanks Charlie, your suggestion helped. Some things in life are funny, > especially when you are trying to figure out something new. I was not > annoyed by the special characters at all, just wanted to poke some fun. My > emails must be like transmitting with my handheld radio, not always the > clearest and with extra "character." Clearance issued as you heard it. > =8B > I have decided to install a couple of 12v sockets in the panel.=8B > >


    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: 09:03:12 AM PST US
    Subject: Re: AeroElectric-List Digest: 5 Msgs - 04/01/18
    From: Charlie England <ceengland7@gmail.com>
    On 4/2/2018 10:26 AM, David wrote: > > Thanks Charlie, your suggestion helped. Some things in life are > funny, especially when you are trying to figure out something > new. I was not annoyed by the special characters at all, just > wanted to poke some fun. My emails must be like transmitting with > my handheld radio, not always the clearest and with extra > "character." Clearance issued as you heard it. > > > > I have decided to install a couple of 12v sockets in the panel. > Glad it helped! --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus


    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: 12:36:26 PM PST US
    From: Mickey Coggins <mick-matronics@rv8.ch>
    Subject: two different Z-33 diagrams
    Hi, I have a printout of a Z-33 that shows how to wire pmags so that you can do maintenance on them, but I can't find this diagram any longer. The Z-33 I find is about Dual Power Path for Battery Contactors. Is there an updated Z diagram that talks about the best way to wire the pmags so that you can also do maintenance on them? Thanks, Mickey Mickey Coggins


    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: 03:12:51 PM PST US
    From: Alec Myers <alec@alecmyers.com>
    Subject: insulation support for crimps
    Bob et al. I understand from reading lots of sources that small wires crimped into, for example, ring terminals, should have insulation support, like that provided by PIDG brand insulated crimps. If I use an uninsulated crimp like a Molex krimptite and I oversleeve with heat shrink tubing around the barrel of the crimp and extending over a half inch of the wire insulation, does that make up adequately for the lack of other insulation support? Alec


    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: 03:47:31 PM PST US
    From: FLYaDIVE <flyadive@gmail.com>
    Subject: Re: insulation support for crimps
    Alec: The insulated lug below a #10 AWG is a FAA requirement. It has a bit of a safety requirement. Using the Shrink Tubing sort of satisfies that safety requirement. How well the safety issue is satisfied, I don't know. Would I do what you suggest? YES, but, I would also consider the voltage, the amperage and the proximity to neighboring terminals. I would also be using a LOCK WASHER or a LOCK NUT on ALL terminals. If you satisfy what YOU as the builder consider SAFE, then the project may just be safe. Barry On Mon, Apr 2, 2018 at 6:11 PM, Alec Myers <alec@alecmyers.com> wrote: > > Bob et al. > > I understand from reading lots of sources that small wires crimped into, > for example, ring terminals, should have insulation support, like that > provided by PIDG brand insulated crimps. > > If I use an uninsulated crimp like a Molex =9Ckrimptite=9D an d I oversleeve > with heat shrink tubing around the barrel of the crimp and extending over a > half inch of the wire insulation, does that make up adequately for the la ck > of other insulation support? > > Alec > =========== =========== =========== =========== =========== > >


    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: 04:11:58 PM PST US
    From: John <rv6a@rogers.com>
    Subject: Warm Toggle Switch
    Hello My RV6A has been flying for a little over nine years. On a recent flight I noticed that the strobe toggle switch behind the panel was warm . I have an Aeroflash Nav/Strobe light combination with independent power packs for each strobe. The power packs, according to the product documentation, draw 2.7 amps each. My toggle switch is a S700-1-3. The toggle switch is a S700-1-3 and the circuit is protected by a 7.5 amp fuse. The fuse has never blown. The Nav lights are switched/fused separately I have pulled the strobe fuse until I get this sorted out. I am wondering if this is too much current draw for this particular switch and that I should incorporate a relay into the circuit. Perhaps the switch has reached its end of service. Thoughts? John C RV6A


    Message 7


  • 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: 04:30:24 PM PST US
    Subject: Re: Warm Toggle Switch
    From: C&K <yellowduckduo@gmail.com>
    There is history in the archives on this happening when the rivets attaching the terminal lugs onto the switch are not tight enough. Yes it's time for a new switch. Ken On 02/04/2018 7:11 PM, John wrote: > > Hello > > My RV6A has been flying for a little over nine years. On a recent flight I noticed that the strobe toggle switch behind the panel was warm . I have an Aeroflash Nav/Strobe light combination with independent power packs for each strobe. The power packs, according to the product documentation, draw 2.7 amps each. My toggle switch is a S700-1-3. The toggle switch is a S700-1-3 and the circuit is protected by a 7.5 amp fuse. The fuse has never blown. The Nav lights are switched/fused separately > > I have pulled the strobe fuse until I get this sorted out. I am wondering if this is too much current draw for this particular switch and that I should incorporate a relay into the circuit. Perhaps the switch has reached its end of service. > > Thoughts? > > John C > RV6A > >


    Message 8


  • 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: 04:47:13 PM PST US
    Subject: Re: insulation support for crimps
    From: Charlie England <ceengland7@gmail.com>
    On 4/2/2018 5:11 PM, Alec Myers wrote: > > Bob et al. > > I understand from reading lots of sources that small wires crimped into, for example, ring terminals, should have insulation support, like that provided by PIDG brand insulated crimps. > > If I use an uninsulated crimp like a Molex krimptite and I oversleeve with heat shrink tubing around the barrel of the crimp and extending over a half inch of the wire insulation, does that make up adequately for the lack of other insulation support? > > Alec I wouldn't hesitate to use that technique on my plane (I've actually done it in a few places). It's worth mentioning that the wire should still be supported within a few inches of the connector, regardless of the terminator you use. Whenever we get all wrapped up in state of the art perfection, it's worth remembering that there are planes still flying with terminators on their wires that were applied before PIDG terminals existed; probably before crimp terminals existed at all. :-) Charlie --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus


    Message 9


  • 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: 06:40:11 PM PST US
    From: FLYaDIVE <flyadive@gmail.com>
    Subject: Re: Warm Toggle Switch
    John: Yes, the switch may be the problem. Your switch S700-1-3 is a 15 Amp rating on AC. Which is NOT 15 Amps on DC. A good rule of thumb is the switch should be able to handle DOUBLE the DC amperage that the circuit draws. There are a couple of ways of determining the DC rating of an AC Switch. You can say take .707 x Rating or .637 x Rating. So: 15 Amps x .707 = 10.6 Amps // or 15 Amps x .637 = 9.5 Amps. They are average type switches, they are not hermetically sealed, the contacts are not silver plated. There could very easily be corrosion on the contacts and that raises the resistance of the circuit. The higher resistance can very easily cause HEAT at that contact point AND you are FEELING IT! Find a better quality switch. I like taking a DPST (Double Pole Single Throw) Switch and wiring BOTH Sides together so it functions as a SPST (Single Throw Single Throw) Switch. So, in your case you would have a total AC Rating of 30 Amps which would be able to handle either 19 Amps or 21 Amps DC. AND the physical properties of the switch would be much more robust that that S700-1-3 switch. BUT! DON'T STOP THERE! Other things in the circuit can be causing higher current draw. 1 - Sales brochures generally BOAST better ratings that that actually exist. The Strobe may very well be drawing higher than advertised. 2 - Check the connections of the switch. If they are SCREW Terminals use star lock washers. If they are FAST-ON terminals, how easy do they slide on/off? Squeeze them with needle nose pliers so they are Very Snug. 3 - How are other connections in the circuit? 4 - You mentioned FUSE, check the fuse holder for any signs of corrosion. Clean it with Scotch-Brite and Contact Cleaner. Resistance is resistance no matter where it is and that causes an increase in current draw. Barry > >


    Message 10


  • 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: 07:57:28 PM PST US
    Subject: Re: insulation support for crimps
    From: "Eric Page" <edpav8r@yahoo.com>
    Alec, Like the others, I wouldn't hesitate to use the method you described. I would, however, use adhesive-lined heat shrink tubing. It helps to keep moisture out of your crimps and it grips the wire insulation and terminal better than non-adhesive tubing. I usually have the best luck with tubing that has higher shrink ratio; I generally buy 3:1 or 4:1, which gives more leeway for diameter mismatch. Here's a Digi-Key search sorted for only adhesive-lined shrink tubing: https://preview.tinyurl.com/y8e5xz9d Eric Read this topic online here: http://forums.matronics.com/viewtopic.php?p=478996#478996


    Message 11


  • 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: 08:04:27 PM PST US
    From: Paul Eckenroth <paul@eckenroth.com>
    Subject: Re: Warm Toggle Switch
    I believe this is my first attempt at actually giving advice on this list but here goes. I had the same problem with the strobe switch in my RV9 except the switch was not warm but hot. I removed the switch and soldered the rivets. Replaced the switch and the heat was gone and has been for over 700 hours. I also removed the rest of the toggle switches and gave them the same treatment. I check the switches periodically and they are always ambient temperature. I=99m sure I read about soldering the rivets on this list years ago so this is not my idea. Paul On Monday, April 2, 2018, FLYaDIVE <flyadive@gmail.com> wrote: > John: > > Yes, the switch may be the problem. Your switch S700-1-3 is a 15 Amp > rating on AC. Which is NOT 15 Amps on DC. A good rule of thumb is the > switch should be able to handle DOUBLE the DC amperage that the circuit > draws. There are a couple of ways of determining the DC rating of an AC > Switch. You can say take .707 x Rating or .637 x Rating. So: 15 Amps x > .707 = 10.6 Amps // or 15 Amps x .637 = 9.5 Amps. > > They are average type switches, they are not hermetically sealed, the > contacts are not silver plated. There could very easily be corrosion on > the contacts and that raises the resistance of the circuit. The higher > resistance can very easily cause HEAT at that contact point AND you are > FEELING IT! > > Find a better quality switch. I like taking a DPST (Double Pole Single > Throw) Switch and wiring BOTH Sides together so it functions as a SPST > (Single Throw Single Throw) Switch. So, in your case you would have a > total AC Rating of 30 Amps which would be able to handle either 19 Amps o r > 21 Amps DC. AND the physical properties of the switch would be much more > robust that that S700-1-3 switch. > > BUT! DON'T STOP THERE! Other things in the circuit can be causing highe r > current draw. > 1 - Sales brochures generally BOAST better ratings that that actually > exist. The Strobe may very well be drawing higher than advertised. > 2 - Check the connections of the switch. If they are SCREW Terminals use > star lock washers. If they are FAST-ON terminals, how easy do they slide > on/off? Squeeze them with needle nose pliers so they are Very Snug. > 3 - How are other connections in the circuit? > 4 - You mentioned FUSE, check the fuse holder for any signs of > corrosion. Clean it with Scotch-Brite and Contact Cleaner. > > Resistance is resistance no matter where it is and that causes an increas e > in current draw. > > Barry > > >> >> >> >> >




    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! --