I'd have to look at the circuit in more detail to be assured of this v/v the altus metrum fligh units, but generally the need for shielding in the wiring looms is over-rated and further the shielding can act like a parasitic antenna where twisted (specifically by pairs) wiring would not otherwise be a problem.
Very best regards; - Bob Finch On Wed, Mar 27, 2013 at 10:28 AM, w9ya <[email protected]> wrote: > Um....I use the following; > > 1 - Properly routed and supported *stranded* wiring. i.e. NO > unsupported flexing of the wiring loom. > > 2 - Tinned (with solder of course) wiring is specifically indicated. > It will not release from under the screw terminal when the terminal is > properly tightened and supported. > > 3 - Double check the connections before each flight; by making sure > the wiring and screw are snug AND that the wiring is still routed and > supporteed correctly. > > YMMV of course but I preclude intermittent continuity issues resulting > from the lack of a gas tight ferrule connection. > > Very best regards; > > - Bob Finch > > > > On Wed, Mar 27, 2013 at 8:16 AM, Thomas Müller > <[email protected]> wrote: >> If you like to attached stranded wire to screw terminals you should crimp >> the ends in a ferrule. Tin soldering is not a good idea since the thin is >> pretty soft and flowable which might lose the connection. >> >> >> >> Thomas >> >> >> >> Von: [email protected] >> [mailto:[email protected]] Im Auftrag von Clay & Carly >> Dunsworth >> Gesendet: Mittwoch, 27. März 2013 14:59 >> An: Altus Metrum >> Betreff: Re: [altusmetrum] wires >> >> >> >> I have always steered away from the solid core. Most of the time where >> space isnt critical ive used machine tool wire, but doesnt work with the >> "smallness" of the Altus Metrum products.(16ga). I bought some smaller 26ga >> stranded, becuase another altimeter i have, the MFG suggest 26ga stranded as >> the "smallest" wire that would be safe. this was after I discovered blue >> color on the copper of the ematch leads. (now i suspect chemical reaction of >> the bare copper, oily fingers, and BP residue.) Oddly its almost too big for >> the TM i have. >> >> >> >> I have never tinned the ends of my wires, but the belkin cable i cut up the >> other day suprised me that the wires were stranded copper, and seemed >> suitable for this. I always envisioned they were like old telephone cable >> with that fiberstuff, that would be unsuitable. Maybe with this small of a >> gage i should solder tin the ends for added reliablity? >> I have litterally hundreds of feet of the stuff, and would be a "freebe" for >> the rest of my av-building life. >> >> >> >> Clay >> >> I guess thats why we test! >> >> On Tue, Mar 26, 2013 at 10:41 PM, Michael Stephens <[email protected]> >> wrote: >> >> My only worry would be that solid core wire doesn't like vibration very much >> but stranded wire doesn't do well in screw terminals. I would think it could >> definitely handle the voltage, especially since its such low duty cycle. >> >> On Mar 26, 2013 8:16 PM, "Clay & Carly Dunsworth" <[email protected]> >> wrote: >> >> Anyone use cat5e cable for thier avionics bay? >> >> Making a small launcher for the kids, i noticed the 4 twisted pair i >> have would be a good match for my bay? >> >> Its good for things like telephones and data signal, but what about >> ematch voltage? >> thinking the sheething and twisted pair may be good at RF shielding? >> Clay >> >> _______________________________________________ >> altusmetrum mailing list >> [email protected] >> http://lists.gag.com/mailman/listinfo/altusmetrum >> >> >> _______________________________________________ >> altusmetrum mailing list >> [email protected] >> http://lists.gag.com/mailman/listinfo/altusmetrum >> >> >> >> >> _______________________________________________ >> altusmetrum mailing list >> [email protected] >> http://lists.gag.com/mailman/listinfo/altusmetrum >> _______________________________________________ altusmetrum mailing list [email protected] http://lists.gag.com/mailman/listinfo/altusmetrum
