---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 05/05/12: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:46 AM - Twisted pair tefzel (Glen Matejcek) 2. 02:33 AM - Aluminum bronze - conductivity (Stuart Hutchison) 3. 03:37 AM - Re: Twisted Pair [was: Secrets Techniques] (Joe Dubner) 4. 05:33 AM - Re: Secrets Techniques (ROGER & JEAN CURTIS) 5. 06:28 AM - Re: Secrets Techniques (Robert L. Nuckolls, III) 6. 06:29 AM - Re: Secrets Techniques (Robert L. Nuckolls, III) 7. 11:18 AM - Re: Secrets Techniques (John Loram) 8. 11:27 AM - Re: Secrets Techniques (John Loram) 9. 11:38 AM - Re: Re: Twisted Pair [was: Secrets Techniques] (John Loram) 10. 11:38 AM - Re: Twisted pair tefzel (John Loram) 11. 03:44 PM - Re: Secrets Techniques (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 01:46:49 AM PST US From: Glen Matejcek Subject: AeroElectric-List: Twisted pair tefzel Hi John- How much of the tefzel twisted pair wire are you looking for? I had some, might have a spool. It'll be a week or so before I'm back in town, though. Glen Matejcek ________________________________ Message 2 _____________________________________ Time: 02:33:31 AM PST US From: "Stuart Hutchison" Subject: AeroElectric-List: Aluminum bronze - conductivity Hi Bob, Maybe I didn't explain myself well, I'm a bit intrigued by your last comment. I appreciate that keeping the number of joins down is priceless, but since stainless is such a poor conductor, I would have expected to need to bond the stud to something else and not rely on current radiating out through the thin stainless firewall material? Probably overkill, but I made mine like the attached photo, which will have a short # 2 CCA fatwire between the forrest of ground tabs and an engine mounting bolt where there is chrome-moly structure bolted to a large part of the aluminium airframe. All of the bonding contact areas on my stud are at least 3/4", while the main shaft is 3/8 diameter, as are the threads and nuts. There is an silicone insulating washer on the front and back of the firewall for vibration absorbption as well. .... I guess I'll just use di-electric grease to keep the air out at the point where the stud meets with the firewall, or perhaps make a phenolic bush to insulate it from the stainless, then bond the stud to a substantial part of the aluminum structure on the inside (such as an engine mounting bolt)" .... "I think clean, grease and lots of pressure are key. Additional bonding is not useful." ________________________________ Message 3 _____________________________________ Time: 03:37:10 AM PST US From: Joe Dubner Subject: AeroElectric-List: Re: Twisted Pair [was: Secrets Techniques] John, > ... while looking for unshielded tefzel insulated twisted pair > (which I'm still looking for). If 22 AWG is suitable for your application, Stein Air sells a variety of colors of twisted pair (and triples, etc.). Try this link: http://www.steinair.net/store.cfm?tlcatid=32 and scroll down to "Wire,Twisted". Or go to http://www.steinair.net, click on "Wire / Coax", and scroll down the page. Best, Joe Independence, OR http://www.mail2600.com/cgi-bin/webcam.cgi ________________________________ Message 4 _____________________________________ Time: 05:33:09 AM PST US From: "ROGER & JEAN CURTIS" Subject: RE: AeroElectric-List: Secrets Techniques I knew there must be a tool for this!!! http://www.aircraftspruce.com/catalog/topages/twiststrip.php And look at today's special price at the bottom of the page!!! Cheap!!! I have 2 on order, so I will always have a backup=98=BA Roger Do not archive ________________________________ Message 5 _____________________________________ Time: 06:28:11 AM PST US From: "Robert L. Nuckolls, III" Subject: RE: AeroElectric-List: Secrets Techniques At 07:30 AM 5/5/2012, you wrote: > I knew there must be a tool for this!!! > > http://www.aircraftspruce.com/catalog/topages/twiststrip.php > Hadn't seen this one. Your find reminds me that I haven't a clue as to how this task was handled at any of TC factories I worked at. I don't recall that I ever had cause to visit the wire-slingers for a close look at how they did things. All of my contact with their work product was after it got installed on an airplane. I've still got a badge for Hawker Beech but they shipped their wire fab shops to Mexico about 10 years ago . . . I'll have to seek insight to those processes elsewhere but I'll see what I can learn. Bob . . . ________________________________ Message 6 _____________________________________ Time: 06:29:55 AM PST US From: "Robert L. Nuckolls, III" Subject: RE: AeroElectric-List: Secrets Techniques >;-) -john- >can you believe it! >I stumbled on it while looking for unshielded tefzel insulated >twisted pair (which I'm still looking for). I've got a few thousand feet of two conductor 22AWG shielded. I probably ought to list it in my catalog. Will 22AWG work for you and how much do you need? Bob . . . ________________________________ Message 7 _____________________________________ Time: 11:18:18 AM PST US From: "John Loram" Subject: RE: AeroElectric-List: Secrets Techniques Oh, please don't use any time better spent enjoying your grandson! -john- > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On > Behalf Of Robert L. Nuckolls, III > Sent: Saturday, May 05, 2012 6:27 AM > To: aeroelectric-list@matronics.com > Subject: RE: AeroElectric-List: Secrets Techniques > > --> > > At 07:30 AM 5/5/2012, you wrote: > > > I knew there must be a tool for this!!! > > > > > > http://www.aircraftspruce.com/catalog/topages/twiststrip.php > > > > Hadn't seen this one. Your find reminds me that > I haven't a clue as to how this task was handled > at any of TC factories I worked at. I don't recall > that I ever had cause to visit the wire-slingers > for a close look at how they did things. All of > my contact with their work product was after it > got installed on an airplane. > > I've still got a badge for Hawker Beech but they > shipped their wire fab shops to Mexico about 10 > years ago . . . I'll have to seek insight to those > processes elsewhere but I'll see what I can learn. > > > Bob . . . > > ________________________________ Message 8 _____________________________________ Time: 11:27:43 AM PST US From: "John Loram" Subject: RE: AeroElectric-List: Secrets Techniques I'm just looking for 15 ft of UNshielded twisted pair for the RS-422 data lines in a Dynon D10A installation. If I can't find it, I'll just twist some 22 AWG, but would prefer to have the Tefzel casing for a little added physical protection. Shielded I got already. but thank you, -john- (I wonder if there's tools for stripting three and four wire versions of the shielded twisted shielded cable?) _____ From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L. Nuckolls, III Sent: Saturday, May 05, 2012 6:29 AM Subject: RE: AeroElectric-List: Secrets Techniques ;-) -john- can you believe it! I stumbled on it while looking for unshielded tefzel insulated twisted pair (which I'm still looking for). I've got a few thousand feet of two conductor 22AWG shielded. I probably ought to list it in my catalog. Will 22AWG work for you and how much do you need? Bob . . . ________________________________ Message 9 _____________________________________ Time: 11:38:48 AM PST US From: "John Loram" Subject: RE: AeroElectric-List: Re: Twisted Pair [was: Secrets Techniques] Thanks, Joe. Do you 'spose it's Tefzel? I tried calling but I think they're out flying, today. -john- > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On > Behalf Of Joe Dubner > Sent: Saturday, May 05, 2012 3:35 AM > To: aeroelectric-list@matronics.com > Subject: AeroElectric-List: Re: Twisted Pair [was: Secrets Techniques] > > > > John, > > > ... while looking for unshielded tefzel insulated twisted > pair (which > > I'm still looking for). > > If 22 AWG is suitable for your application, Stein Air sells a > variety of colors of twisted pair (and triples, etc.). > > Try this link: http://www.steinair.net/store.cfm?tlcatid=32 > and scroll down to "Wire,Twisted". Or go to > http://www.steinair.net, click on "Wire / Coax", and scroll > down the page. > > Best, > Joe > Independence, OR > http://www.mail2600.com/cgi-bin/webcam.cgi > > > Photoshare, and much much more: > > > > ________________________________ Message 10 ____________________________________ Time: 11:38:48 AM PST US From: "John Loram" Subject: RE: AeroElectric-List: Twisted pair tefzel Thank you Glen. What I'm hoping to find is a twisted pair of Tefzel 22 AWG wires inside a out sheath of Tefzel. Would you let me know, when you can, if that's what you have? thanks, -john- > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On > Behalf Of Glen Matejcek > Sent: Saturday, May 05, 2012 1:44 AM > To: aeroelectric-list@matronics.com > Subject: AeroElectric-List: Twisted pair tefzel > > --> > > Hi John- > > How much of the tefzel twisted pair wire are you looking for? > I had some, might have a spool. It'll be a week or so > before I'm back in town, though. > > Glen Matejcek > > Photoshare, and much much more: > > > > ________________________________ Message 11 ____________________________________ Time: 03:44:40 PM PST US From: "Robert L. Nuckolls, III" Subject: RE: AeroElectric-List: Secrets Techniques At 01:26 PM 5/5/2012, you wrote: >I'm just looking for 15 ft of UNshielded twisted pair for the >RS-422 data lines in a Dynon D10A installation. If I can't find it, >I'll just twist some 22 AWG, but would prefer to have the Tefzel >casing for a little added physical protection. > >Shielded I got already. but thank you, -john- then use it. it will be fine . . . 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