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04-06-2009, 09:20 PM
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Join Date: Sep 2007
Location: Albuquerque, NM
Posts: 659
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Critique my wire routing
This has been bugging me for a while. I can't rivet my baggage floor down until the wiring is settled.
I'm thinking about putting 2 pieces of conduit under the baggage floor as shown. The strobe power supply will mount on the side just behind the baggage bulkhead, the pitch servo will go next to the bellcrank, and the ELT will mount to the side of the in-line floor rib. The wiring to the tail will run along the j-channel through the tail cone.
1. Am I missing anything?
2. Recommended way of supporting the conduit? 1/8" holes and zip ties through baggage ribs?
3. What should I do with the ELT antenna?
Help!

__________________
Andy Compton, PhD EE
RV-10 - #41414 (building)
RV-9A - N643AC (built,flying,sold,missed)
My blood and sweat, the Wifey's tears
Last edited by Lionclaw : 04-06-2009 at 09:37 PM.
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04-06-2009, 09:39 PM
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Join Date: Apr 2006
Location: Sedro Wooley, WA
Posts: 147
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wire this
Andy,
Your ideas seem sound. I thought about doing the same thing but ended up just drilling holes in the bulk heads near the bottom, installing gromets and running the wires along the skin and fastening them down with sticky pads and zip ties.
Your way will be much neater. Pull an extra string or two though the conduit when you finished so you can add a wire or two later.
Mike ice
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04-06-2009, 10:23 PM
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Join Date: Jul 2007
Location: Delta, CO/Atlin, BC
Posts: 2,391
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Andy,
Generally looks reasonable to me. I had to drill the holes for similar wiring AFTER the floors were riveted down. Another option (if I were doing this over) is to fasten the floors with nutplates and screws and you could get in there any time you want. Also consider whether there is sufficient diameter in the conduit for all the wires you MIGHT want to ever run back there. I ended up moving my battery from the firewall to behind the baggage bulkhead and that necessitated yet another hole for the #2 cable to the firewall. Would use less wire and not cross over the tailcone if you put the elevator trim on the pilot's side, since the elev trim tab is on that side also. I put my ELT antenna on the top of the tailcone, forward of the VS (and far enough away that it wouldn't beat on the VS when in flight - yes, I had to move it after reading a post about that issue). I used drip irrigation tubing for my conduit and it doesn't really need extra support. What are you doing to mount the strobe box?
Just a few stream-of-consciousness thoughts.
cheers,
greg
__________________
Greg Arehart
RV-9B (Big tires) Tipup @AJZ or CYSQ
N 7965A
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04-06-2009, 10:38 PM
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Join Date: Sep 2007
Location: Albuquerque, NM
Posts: 659
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I was planning to buy the vans strobe mount. A pic of an installation is here: http://www.rvproject.co.uk/Fuselage/...robe_mount.htm
I'm not using the Whelen PS, but the install kit would probably work just the same ( with a few extra holes  ).
I could put the strobe/wiring down the left side, and run the rest of the wires down there.
__________________
Andy Compton, PhD EE
RV-10 - #41414 (building)
RV-9A - N643AC (built,flying,sold,missed)
My blood and sweat, the Wifey's tears
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04-07-2009, 05:13 AM
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Join Date: Jan 2005
Location: Atlanta, GA
Posts: 2,295
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For what it's worth, this is what I did:
It has worked out really well. You will note that I used low-oder (non-corrosive) RTV as the conduit passes through the bulkeads to help hold it in place.
This is worked great for me so far. For what it's worth, I'm running all of the wires to the tail in the same conduit....that would be strobe, position, trim and Dynon magnetometer wires. I was most concerned about RF noise with the Dynon magnetometer but everything works perfectly.
__________________
"What kind of man would live where there is no daring? I don't believe in taking foolish chances but nothing can be accomplished without taking any chance at all." - Charles A. Lindbergh
Jamie | RV-7A First Flight: 7/27/2007 (Sold)
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04-07-2009, 05:43 PM
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Join Date: Nov 2006
Location: Bennington, Vermont USA
Posts: 1,301
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Beautiful Workmanship
Quote:
Originally Posted by Lionclaw
This has been bugging me for a while. I can't rivet my baggage floor down until the wiring is settled.
I'm thinking about putting 2 pieces of conduit under the baggage floor as shown. The strobe power supply will mount on the side just behind the baggage bulkhead, the pitch servo will go next to the bellcrank, and the ELT will mount to the side of the in-line floor rib. The wiring to the tail will run along the j-channel through the tail cone.
1. Am I missing anything?
2. Recommended way of supporting the conduit? 1/8" holes and zip ties through baggage ribs?
3. What should I do with the ELT antenna?
Help!

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Keep the strobe cables spaced apart from everything else - apart from nav or landing lights.
Very nice workmanship by the way.
Jim Sharkey
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04-07-2009, 07:18 PM
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Join Date: Sep 2006
Location: Port Orange, FL
Posts: 1,020
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What you are planning to do is fine. I run most of my cables - strobe (power, left and right), tail light, AP servo, ELT, and trim control cable all through the central channel. I only route magnetometer wires from the side. So far I have no issue.
Picture shown at 420 hrs.

__________________
Ted Chang, VAF #681
RV-9A #91048, flying since 8/2006. 2,050 hrs.
2018 Due paid
Last edited by tc1234c : 05-03-2009 at 01:34 PM.
Reason: fix broken link
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04-07-2009, 09:29 PM
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Join Date: Feb 2007
Location: Bakersfield, CA
Posts: 214
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I did the same as Jamie and also used the Van's mountings on both sides for the strobes and the ELT. I will put the ELT antenna in the back near the tail as well. I agree with Jim, BEAUTIFUL workmanship, I wish I had the skill you obviously have.
__________________
Bruce Peters
Bakersfield, CA
RV-9A, Flying 11/21/15
VAF#1145
Donation up to date 08/20
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04-07-2009, 10:44 PM
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Join Date: Sep 2007
Location: Albuquerque, NM
Posts: 659
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Thanks for the input and the kind words. I'm flattered
I'll post back with a picture of what I end up doing.
__________________
Andy Compton, PhD EE
RV-10 - #41414 (building)
RV-9A - N643AC (built,flying,sold,missed)
My blood and sweat, the Wifey's tears
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05-03-2009, 12:02 AM
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Join Date: Sep 2006
Location: Roma, Italy
Posts: 510
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Hi, Lionclaw.
Just my 2 cents opinion.
When I wanted to do the same, I wrote to Van's asking if it would be OK to cut a couple of holes into the rear bulkhead flange and associated front parts. They asked me that it has never been engineered. So, I didn't cut them, even if I felt it wouldn't be a safety issue.
I installed two corrugated tubes into the center channel ("pushrod channel") and inserted all strobes only in one of them and lights in the other.
VOR and COMM1 coaxials pass on the top (where you will like to lay tail strobe, el. trim, etc...) and cross the U-channel behind seats (dont' remember the exact name for it) as per static tube on the left side.
__________________
RV4 IO-320, Catto 3-blade, Christen, I-BILT
Flight time: 1 hour
Status: test flights
www.rv4.it
ROME, Italy
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RV9A O-320 D1A, Hartzell C/S prop, slider, I-PRCA
Flight time: 350 hours
Status: SOLD
http://nuke.rv9.it
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