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01-13-2013, 08:40 PM
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Join Date: Dec 2010
Location: Salem, OR
Posts: 112
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Back of similar panel
This is in my RV8a
Here's the back looking from the right, bare wire for the GDL-39 can be seen going into the MFD. I'm mounting the GDL on the back of the far right side of the panel. This way I can reach under and sync with an ipad if I want and also remove it if I want it in another plane
Here is looking from the left. GX pilot/GTN/audio panel and radio stack. Tight fit but it works
This is looking towards the tail and shows the remote mounted transponder, as well and the magnetometer position
Here's the panel powered up for the first time this evening
Kai
__________________
RV-8a Flying
RV-10 Building
J-5A Flying
Extra 300 flying
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01-13-2013, 08:46 PM
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Join Date: Oct 2006
Location: Glendale, AZ
Posts: 256
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Quote:
Originally Posted by Mark Burns
Bob,
Are your serious about the Cirrus? I've never seen behind a certified aircraft panel that was remotely close to Randy's.
Someone snap a photo under the panel of a Cirrus for us.
Mark
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No need to snap a picture behind a Cirrus panel. I own one and work on many. They are NOT even remotely close to that beautiful wiring job. In fact compared that picture I would say they look positively slovenly.
__________________
Roger Whittier
RV7A Quick Build, Tip Up
N1MY Reserved - Canopy finished - Wings mated, Engine hung, electrical 95%
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01-13-2013, 10:06 PM
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Join Date: Oct 2005
Location: Melbourne, Australia
Posts: 1,868
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Quote:
Originally Posted by Mark Burns
Bob,
Are your serious about the Cirrus? I've never seen behind a certified aircraft panel that was remotely close to Randy's.
Someone snap a photo under the panel of a Cirrus for us.
Mark
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Well, Roger Whittier says the Cirrus wiring is not as good but I took a long look at a brand new SR22 a few months back and the wiring harness was VERY slick. Maybe they've improved.
Randy's wiring is lovely, but if you get Stein or Stark, or any good professional, to fully wire your aircraft you'll get pretty much the same thing.
I've attached a photo I've posted before of the wiring on a radio stack for a Cessna 206. It's nice too. It's a good standard, but no more than might be expected from a professional who knows what the final product is going to look like before he starts.
photo sharing websites
__________________
You’re only as good as your last landing 
Bob Barrow
RV7A
Last edited by Captain Avgas : 01-13-2013 at 10:24 PM.
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01-14-2013, 05:55 AM
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Join Date: Jan 2005
Location: Cincinnati, Ohio
Posts: 1,060
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[quote=azonic75;734314]This is in my RV8a
Kai,
A heads up for you and anyone else using the GSU 73 mount from Avionics Systems in an RV8 panel.
I have found that when using that mount, the bottom of the instrument panel needs to be "tied" to something forward. Otherwise, the weight of the GSU 73 causes the panel to flex. This manifests itself in the GSU 73 unable to calibrate the magnetometer, or pass the engine run up test. Or, if you happen to get past those steps, you might lose your attitude while flying formation with another G3X equipped RV8 when you both hit the same bump!  Both planes had the GSU 73 mounted to an "unstiffened" panel.
__________________
Jon Thocker
Habitual Offender
RV4, RV4, RV6A, RV8, RV8, RV8,RV8, RV8, RV8, RV12
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01-14-2013, 06:08 AM
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Join Date: Jan 2005
Location: Martinsville, IN
Posts: 2,326
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Geez guys, thanks for the comments. It's not that hard, really. Here's a couple of tips that I've learned over the years.
1. As it was said before, have a plan. Know where everything is and will be.
2. Start separating wires into major bundles early down in the tunnel like Radio, Power, Ground, etc. Within those groups, have sub-bundles like Nav, Comm, GPS, etc. I like to keep the power wires away from the radio wires as early as possible to cut down on interference.
3. I wire from the back to the front. I leave behind the panel to last. Leave all the tales long so you can route wires where you want to, not where you have to.
4. Once everything is behind the panel, wire up one device at a time and secure the bundles appropriately.
I'm sure I'm leaving out a few things, but that's the big picture. You can do it just like I've done it. It doesn't take any extraordinary skill or anything, just some patience.
__________________
Randy Pflanzer
Greenwood, IN
www.pflanzer-aviation.com
Paid through 2043!
Lund fishing Boat, 2017, GONE FISHING
RV-12 - Completed 2014, Sold
427 Shelby Cobra - Completed 2012, Sold
F1 EVO - partially completed, Sold
F1 Rocket - Completed 2005, Sold
RV-7A - Partially completed, Sold
RV-6 - Completed 2000, Sold
Long-EZ - Completed 1987, Sold
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01-14-2013, 08:12 AM
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Join Date: Jan 2005
Location: Venice, Fl
Posts: 1,020
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Awesome
Randy, Your wiring is AWESOME.
I worked on F-4j's as a "behind the panel" avionics/missile guidance and fire control tech in VMFA-334. You would think that my behind the panel looks like yours. However, it does not!! My behind panel looks a lot more like Van's demo aircraft panels. If you have ever taken a photo "under and behind" a Van's panel you will see it is a more typical "spaghetti wiring" job than most would think. (Sorry, I can't find a photo I took under a Van's panel)
YMMV but Just info for those that are intimidated by Randy's awesome wiring job. Make it neat as you can so that you can trace problems. You don't have to make it looks like Randy's, especially for those that are "electrically challenged".
ps... and yes, those are big service loops that can be pulled thru my easily removable front access panels. The panel is a beautifully sculptured piece from Laird Owens and no, I don't know if he still makes them.

__________________
Gary Palinkas - Gman.... VAF #161
Venice, Fl
RV-6 "Sassy" Flying 400 hrs since Oct 2011
Lycoming 0-360 A1A, FP Sensenich Prop
SARL #19 .... Van's Calendar March 2015
Although exempt several ways, =VAF= Dues paid to support this awesome site/family
Last edited by GLPalinkas : 01-14-2013 at 04:50 PM.
Reason: added text
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01-14-2013, 08:34 AM
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Join Date: Dec 2010
Location: Salem, OR
Posts: 112
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Panel flex
Jon,
Good to get this feed back, how did you go about fixing this? Would tying the back end of the bracket to the forward baggage bulkhead be sufficient?
Kai
__________________
RV-8a Flying
RV-10 Building
J-5A Flying
Extra 300 flying
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01-14-2013, 08:37 AM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Like Gary says, behind the panel does not have to look like Randy's work to be safe and functional. The typical rental fleet sure does not look anywhere near Randy's example of fine work.
It is much easier when you have wide open access to everything to make it more like Randy's example. Closed up airplanes and many upgrades can leave it looking messy.
I for one went thru several upgrades and I vowed to basically start over with this new upgrade. I don't however have the access that I had the first go round so while it won't end up looking like Randy's, it will be functional and safe and better than it was after all the prior upgrades.
The important things for me are:
- Overcurrent Protection is Priority #1!
- Keep the power wire groups separate from the data lines
- Leave service loops
- Label everything
- Provide strain relief
- Properly secure wire bundles
- Protect wires from rubbing against edges or corners
Last edited by Brantel : 01-14-2013 at 08:43 AM.
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01-14-2013, 11:48 AM
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Join Date: Oct 2011
Location: Madison, WI
Posts: 45
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Wiring
After 20 years in Air Force, most recently working F16's, I don't think I would run wires any different. Now the RV will not pull as many G's as the 16, but if you think about doing any aerobatics and pulling some, you will seriously think about binding wires together as well as to bulkhear, stringer, or some other solid point. Although not heavy wire will move under stress (G's) and this can lead to chaffing as well as breaking. Just my two cents
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01-14-2013, 12:30 PM
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Join Date: Jan 2005
Location: albuquerque, nm
Posts: 1,167
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I could do better now, but here's mine:

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