REFLECTOR: 6 lead cable
Scott Derrick
scott at tnstaafl.net
Thu Mar 12 08:02:28 CDT 2009
While I like the idea of wireless communication, I'm very leery of using
it for critical items. Wireless camera yeah, engine monitor, ummmmm.....
Having worked in the wireless arena for 15 years, radio packet, wifi,
bluetooth, IR, etc.... I can't even remember how many weird
interference issues I've run into.
I think Dave is right that the future is no communication wires between
the engine and the panel, but I guess I've been snake bit one to many
times to feel comfortable with current technology.
I can say that pulling all those damn wires, probably 20+ pairs in all
was a PITA, not the mention the expense and weight.
Maybe a better solution would be fiber. One wire the size of a pencil
lead could transmit engine data, cameras, etc.. And be completely
impervious to interference and chemicals.
Scott
davedent at comcast.net wrote:
> I don't know how long you guys have been working over this gray code
> wire issue but you should be putting it to rest. If you have a
> 430,530 or even a GNC 300 tide into a 300 series transponder you don't
> need the ten wire code wire. Providing you have a AHRS installed.
> These units all have ARINC 429 in and out. That's two wires you hook
> up to each unit. In most cases only one. They drive
> autopilots,radios,instruments and a lot more and allow the traffic to
> be shown on your EFIS if you have a GTX 330. The idea is to get less
> wires, not keep the same old bundles of wires that clutter and weigh
> down our planes. I took my transponder encoders out four years ago
> along with all the wires associated with it and replaced them with one
> wire between my GTX 330 and my EFIS that has its own encoder through
> the AHRS.
>
> Why do we still try and keep the old steam gauge technology in a
> modern aircraft. I have three steam flight gauges in my plane and two
> of them have failed since I installed my EFIS and it has never let
> me down. My $15k altimeter has stuck many times and the encoder out
> of it was unreliable. My GRT unit has never missed a beat. The
> number of wires I have to the EFIS is less in diameter then the hose
> going to my altimeter let alone to the horizon indicator and less
> weight. Does that tell you something. I have a small stand-by
> battery that is good for two hours to run the EFIS and EIS if I loose
> bus power. I've never needed it.
>
> I have been working with a fellow to develop a blue tooth engine
> monitor to eliminate the wires from the engine compartment as well.
> We have flown it and it works fine. Trying to lower the parts count
> and make it even smaller. We may just go with the ARINC 429. One
> wire from the engine compartment, 20 gauge. The first time we flew
> it, we used a cell phone to read the engine information, it worked
> great even while transmitting at different radio sweeps. Also
> developing a touch screen EFIS with intergraded GPS. Also considering
> one wire magnetometers. Six wires are a drag. I know, I just got
> through yesterday, pulling those six wires, what a drag, and time
> consuming.
>
> If looking for ten-twelve wire bundle cables to run from the engine
> compartment, you can find most of this through the home entertainment
> wire systems. Some are very high quality as well. 20/22/24 gauge.
> Look in that industry for wire as well. Most of it must meets fire
> codes and most of it is shielded. Most have cool type connectors
> along with them.
> These are the types of things coming down the flight line, but that is
> who were are. If it weren't for these experimental guys we would
> still be in the stone age of aviation. Keep seeking and pushing the
> design envelope.
>
> OK, I'll get off my soap box.
> Dave
>
> ----- Original Message -----
> *From:* Velocity <mailto:velocityxl at fastmail.fm>
> *To:* Velocity Aircraft Owners and Builders list
> <mailto:reflector at tvbf.org>
> *Sent:* Wednesday, March 11, 2009 8:59 AM
> *Subject:* Re: REFLECTOR: 6 lead cable
>
>
> Mcmaster Carr
> Part Number: 71335K53
> <http://www.mcmaster.com/itm/find.ASP?tab=find&context=psrchDtlLink&fasttrack=False&searchstring=71335K53>
>
> ----- Original Message -----
> *From:* Andrew Ellzey <mailto:ajlz72756 at yahoo.com>
> *To:* Velocity Aircraft Owners and Builders list
> <mailto:reflector at tvbf.org>
> *Sent:* Wednesday, March 11, 2009 7:16 AM
> *Subject:* Re: REFLECTOR: 6 lead cable
>
>
>
>
>
>
> *10 CONDUCTOR GRAY CODE TEFZEL WIRE*
>
> Excellent for carrying gray code information from the encoder
> to other devices that take gray code input such as
> transponder, Garmin 430 GPS, serializer etc. Instead of
> running individual 24AWG wirs and running thm in a bundle, use
> this handy all in one, color coded, 10 conductor cable, saving
> time and effort. Sold in 1' increments.
>
>
> Description Part No. Price Buy
> 10 CONDUCTOR GRY CODE TEF WIRE 11-04479 *$3.35*
> <http://www.aircraftspruce.com/neworderform.php?cmd=add&p=11-04479&q=1>
>
>
>
> http://www.aircraftspruce.com/catalog/elpages/edmograytefzel.php
>
> ------------------------------------------------------------------------
> *From:* "aminetech at bluefrog.com" <aminetech at bluefrog.com>
> *To:* Velocity Aircraft Owners and Builders list
> <reflector at tvbf.org>
> *Sent:* Tuesday, March 10, 2009 6:34:33 PM
> *Subject:* REFLECTOR: 6 lead cable
>
> I wired in a new socket for my RMI monitor. That fixed all
> the problems EXCEPT 'my CHT which is the main reason for
> replacing it. I can't get to the wires that go from the engine
> compartment to the panel, so I plan to run new wires. Anyone
> know where I can get a 6 lead bundle?
>
> John
>
> ------------------------------------------------------------------------
> _______________________________________________
> To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery! www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives:
> http://www.tvbf.org/archives/velocity/maillist.html
>
> ------------------------------------------------------------------------
> _______________________________________________
> To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery! www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives:
> http://www.tvbf.org/archives/velocity/maillist.html
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery! www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 260 bytes
Desc: OpenPGP digital signature
URL: <http://www.tvbf.org/mailman/private/reflector/attachments/20090312/c793c8ff/attachment.pgp>
More information about the Reflector
mailing list