[rebel-builders] Tube for wiring in the wings

[Jesse Jenks]

I only put tubes from the strut attach inspection hole out to the tip,
planning on the "down the strut" routing. Now that the wings are finished,
is there a way to extend the tubes to the root without cutting another
inspection hole?
Thanks
Jesse

From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
Reply-To: <rebel-builders@dcsol.com>
To: <rebel-builders@dcsol.com>
Subject: Re: [rebel-builders] Tube for wiring in the wings
Date: Tue, 20 Feb 2007 21:44:46 -0500

Everyone is covering this well...I will only add...wires/pitot hoses inside
the wing strut are an absolute PITA ! I also cringe at some of the
weakening
I've seen on Rebels and Elites that I've had thru the hanger with holes cut
in the Fus-70 at the most critical compression point.

It's a shorter and easier route taking everything to the root. If you are
running elect fuel gauges you already have wires there anyhow. I did mine
for easy wing removal and used a multi plug. Recepticle is mounted in the
Fus-27 cabin "wing root" panel and a plug on all the wires coming from wing
(landing light/4 wires of strobe/nav light/fuel gauge/pitot heat). This is
especially important if you are using a fuselage based strobe pack vs tip
packs....as you will want the power pack in the back away from your
radios....so wires easily go rearward from the recepticle past the rear
wing
attach and back to the power pack. Other wires go forward and thru/around
the carrythru and down to the panel thru the glare shield panel. If you are
using MAM's moulded headliner this area is all covered anyhow nicely hiding
your wires. If you don't want to use the recepticle/plug and just want to
splice the fus and wing wires together.....a pitot tube (1/4" nylon) and 6
or more wires can also EASILY be run in from the root to infront of the
carrythru at the front of the Fus-27 and tucked under the top edge of the
windshield...then down the front of the carrythru post/Fus-9 area.

As for the tube itself...yes I use very light walled 5052 tube and
depending
on what all needs to be run dictates size. To mount the tube I use tube
clamps with a 90* fitting on them so they mount right onto the leading edge
rib flanges without any modification.

Wayne

----- Original Message -----
From: <bransom@dcsol.com>
To: <rebel-builders@dcsol.com>
Sent: Tuesday, February 20, 2007 9:25 PM
Subject: Re: [rebel-builders] Tube for wiring in the wings

My situation is similar -- that is, I don't know enf what the fuselage
cage
area will be like to really appreciate the wire routing issues now. My
wings
are done, but I put a thin wall AL tube in my leading edge section, and
ran it
all the way to the root thinking I'd be able to run wires down the

posts.

I
think Wayne said he's done em that way, with a wire access hole in the
doubled root rib (and rivets surrounding that hole to reinforce). If it
is too
troublesome to route this way, I may just cut the tube inside the LE
section,
then reroute from the there into the lift strut. I guess that will be my
first use
of the mid-wing inspection hole! ;-) Not sure but what there might be
room
to route the wires down the door posts, but not the few lighting wires.
It
just seems like it ought to be closer to run down from the top as

compared

to
down the lift struts, up the floor, then to panel.
-Ben/ 496r

between the front and the main spar. I was just saying
the leading edge in refernce to that skin. Do you have
any pictures of the inside cabin? I would really like
to run the wire all the way to the root and since I
don't have any idea what the finished product will
look like I am haveing a hard time visualizing what
you are saying about routing the wires in the cabin
and cage issues. Is there a lot of room to run the
wires down through the strut?

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[Keith Leitch]

Wayne,

I was thinking similar to what you said about it being
a PITA to run it in the struts and had figured I was
going the run them to the root end. I was looking for
a picture of where it would exit so as to not be in
the way later.

Thanks,
Keith





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[Wayne G. O'Shea]

Just bring it out in line with where ever you attach the tube to the leading
edge ribs. A hole to match the tube in the double layer root rib and be sure
to do a ring of rivets around the holes perimeter... to tie the double ribs
together well in that spot.

----- Original Message -----
From: "Keith Leitch" <im_planecrazy@yahoo.com>
To: <rebel-builders@dcsol.com>
Sent: Tuesday, February 20, 2007 10:40 PM
Subject: Re: [rebel-builders] Tube for wiring in the wings

Wayne,

I was thinking similar to what you said about it being
a PITA to run it in the struts and had figured I was
going the run them to the root end. I was looking for
a picture of where it would exit so as to not be in
the way later.

Thanks,
Keith





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[Bob Patterson]

Hi Keith !

There are a couple of pictures in the Files section
that will give you a good idea of what you are up against if
you come in to the wing root :
Description
'Wayne's bulletproof firewall' - gives a front view of
the cage area
File name
Left Side.JPG - shows the outside of the root area

Your wires & tube will have to get from behind the
cage around those rectangular cage tubes, to the front, and
down through the top FUS-70 to get to the back of the panel.
You could run them down the back of the cage - except they'd
be exposed to kicking getting in & out, or pinching in the
door .... It's ugly and awkward. Just MHO - every builder
has to make his own choices..... I'd much rather go down
the strut. There's a huge opening inside the strut - lots
of room for plumbing. You can bring the wires out the bottom,
in FRONT of the cage tubes, where they are easy to run up
to the back of the panel, along the front of the cage tube.

Another little benefit is that any water in the pitot goes
to the bottom, where it's easy to drain.

You can still drill holes in ribs that are attached - just
push a good piece of wood up behind the rib, and use
an angle drill attachment.

I like to rivet a strip of 1/8" Lexan about 3" high right
along the inside lip of the top door frame - makes
a handy pocket for sunglasses, etc. - not too useful if
that area is full of wires & tubes, though.... ;-)

--
......bobp
http://www.prosumers.ca
http://bpatterson.qhealthbeauty.com
http://apatterson2.qhealthzone.com

-------------------------------orig.-------------------------
On Wednesday 21 February 2007 00:42, Keith Leitch wrote:

Thanks to everyone that has replied to my question.

Bob,

I guess I didn't state what I was trying to say
correctly. I meant that I was going to run the wires
between the front and the main spar. I was just saying
the leading edge in refernce to that skin. Do you have
any pictures of the inside cabin? I would really like
to run the wire all the way to the root and since I
don't have any idea what the finished product will
look like I am haveing a hard time visualizing what
you are saying about routing the wires in the cabin
and cage issues. Is there a lot of room to run the
wires down through the strut?

Jean, I did look at the PEX tubing also but the only
stuff they have here is very thick walled and to me
that is just extra weight. I would very much like some
pictures.

Bob, That was exactly what I had thought of doing but
since the ribs are already riveted on, I can't drill
holes through them. I was thinking of just attching
with tie wraps. Those plastic sinch type. I also agree
if there is a fire there I have other problems to deal
with.

Keith

--- Bob Patterson <beep@sympatico.ca> wrote:

Hi Keith !

For a reason I've forgotten, the factory does
not like the
idea of running wires down the leading edge of the
wings.
(Might be a worry about weakening the D-tube
structure,
or a fear of the wires wearing a hole over time ....
both
are real possibilities ! )

You may have noticed from some of the comments
....
it's a better idea to run a tube behind the spar,
and to
bring the wires down inside the wing strut, along
with
the pitot tube line. This puts them at the bottom
of the
cockpit, where it's easy to run them up to the
panel.
If you come all the way in to the wing root, the
wires
& tubes exit up top, behind the cage frame, and it's
very awkward to route them down to the back of the
panel, ... and you don't want to drill large holes
in
that cage tubing ! A quick connect fitting at both
ends of the strut will make life a lot easier for
maintenance.

As for material, I wouldn't be too worried 'way
out
there outboard of the strut, as long as the tubing
is
securely fastened. I would really NOT want to use
any 'adhesive only' fasteners - it can get well over

200 degrees inside a wing in summer, especially
if dark paint is used ! Adel clamps, rivetted,
sounds
good to me ... or just made-up aluminum straps -
with rounded edges.

--
......bobp
http://www.prosumers.ca

http://bpatterson.qhealthbeauty.com

http://apatterson2.qhealthzone.com

-------------------------------orig.-------------------------

On Tuesday 20 February 2007 04:08, Keith Leitch
wrote:

I did a search on putting a tube of some sort in

the

leading edge of my wings for wiring and see that

it

was recomended to use a thin wall aluminum. I am
having a hard time finding such a thing over here

in

Hawaii and was wondering if anyone has used the

milky

colored polyethelyne tubing. It is fairly stiff

and I

found it a the Lowe's store. There was also a

clear

vinyl tubing. I know one of the problems with PVC

was

the toxic nature of fumes from it if burned.
Anyone have an idea what to use other than

Aluminum?

Keith

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[Mike Kimball]

I had to use Google to figure out what PITA stood for. I'm not well versed
in Interneteze. One more I now know.

Mike

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Keith
Leitch
Sent: Tuesday, February 20, 2007 6:40 PM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Tube for wiring in the wings

Wayne,

I was thinking similar to what you said about it being
a PITA to run it in the struts and had figured I was
going the run them to the root end. I was looking for
a picture of where it would exit so as to not be in
the way later.

Thanks,
Keith





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[Wayne G. O'Shea]

There is about an inch of space above the x-tube that the front wing attach
bolts to. Wires and 1/4" nylon pitot tube go over it and under the edge of
the windshield (it sits up here 3/8" anyhow), down between the top x-tube's
front face and the bent edge of Fus-9 and thru a grommet or two in the top
Fus10/70 (where it's not really doing anything load wise - unlike where
everyone drills the lower Fus-70 when using the strut route) and you're
behind the panel. All hidden behind moulded headliner and wing fairings.
Simple as it gets.

;O)
Wayne

----- Original Message -----
From: "Bob Patterson" <beep@sympatico.ca>
To: <rebel-builders@dcsol.com>
Sent: Tuesday, February 20, 2007 11:13 PM
Subject: Re: [rebel-builders] Tube for wiring in the wings

Your wires & tube will have to get from behind the
cage around those rectangular cage tubes, to the front, and
down through the top FUS-70 to get to the back of the panel.
You could run them down the back of the cage - except they'd
be exposed to kicking getting in & out, or pinching in the
door .... It's ugly and awkward.

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[Wayne G. O'Shea]

I know it all too well....that's my father-in-laws radio handle!! "PITA!!!
...where did you go??" ;O)

----- Original Message -----
From: "Mike Kimball" <mkimball@gci.net>
To: <rebel-builders@dcsol.com>
Sent: Tuesday, February 20, 2007 11:33 PM
Subject: RE: [rebel-builders] Tube for wiring in the wings

I had to use Google to figure out what PITA stood for. I'm not well versed
in Interneteze. One more I now know.

Mike

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Keith
Leitch
Sent: Tuesday, February 20, 2007 6:40 PM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Tube for wiring in the wings

Wayne,

I was thinking similar to what you said about it being
a PITA to run it in the struts and had figured I was
going the run them to the root end. I was looking for
a picture of where it would exit so as to not be in
the way later.

Thanks,
Keith





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in 45,000 destinations on Yahoo! Travel to find your fit.
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[Keith Leitch]

Thanks Wayne!! I'm LMAO (laughing my arse off)at the
guys trying to figure out "PITA". Here I have been
thinking I was so far behind the times with all this
computer jargin. Come to find out there are others
like me out there. :)
Keith






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[rickhm]

Yes the real concern in PHX is density altitude. My only point was it really does get to 120!

-------------- Original message --------------
From: Ron Shannon <rshannon@cruzcom.com>

Rick, wouldn't that be a density altitude issue? Quite a different
concern than specialty adhesive structural survivability.

Here's another closed car test where top inside temp was higher, at 78
deg. C (172 F) -- but again with sun pouring through and held in by
glass, which has to be a more extreme heat collector than a wing.

http://tinyurl.com/yug58c


Rickhm@comcast.net wrote:

Think of the temperatures in a cool place like Phoenix where on rare occasions

they close the airport when it gets to 120+. I am told they close the airports
(or they use to ) because the ops manual for airlines only go to 120, or so I
have been told. Maybe we should ask if this is still the case. In any event,
if it gets that hot outside it isn't that much of a streach to get to 200. You
must consider where you "might" fly your plane on vacation when your done!

Rick Muller
SR70

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