Plumbing & SR2500 Rudder

[Mike Davis]

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Date: Thu, 09 Apr 1998 22:16:04 +0000
From: David Ricker <ricker@dbis.ns.ca>
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Subject: Re: Plumbing & SR2500 Rudder
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Tim, Group

Thanks to all who contributed to this thread, it brought out lots of
good info. We will keep this on file for when we get to the wings & fin
light installation.

On another thread, there was a question about oil canning in the skin of
a SR2500 rudder. I believe the Elite rudder (and El.) is built the same
way. We carefully closed the angle on the trailing edge of the skin and
this made a much smoother assembly. We may have opened the angle as we
worked inside during construction, I am not sure.

I am not sure that this is the solution intended by Murphy, but it
looked like it made sense at the time. In any case, be VERY careful
doing this as the skin is not one of the more ductile alloys of aluminum
(6061-T6).

Dave R.


Tim Carter wrote:

Dave, Francine:

Simple installation:

In each root rib (on the Rebel) there is an aft 3/16" tooling hole next to
the main spar. I used 1/2" nylon water line, about 3/32" wall thickness
(same as you'd use for a refrigerator ice hook up or similar), ran it thru
the wing next to this tooling hole.

I cut a small rubber tube, like car vacuum hose, into 2" pieces and split
them on one side. I used some Proseal to attach them to the rib web just
adjacent the tooling hole. This is like a small cushion for the nylon

line

to lie against.

I then tie-wrapped the nylon water line to the rib against the cushion in
X-criss-cross fashion thru the tooling hole, all the way down the wing.

On the solid root rib I drilled a 1/2" hole in the dead center of the aft
stiffening swage, and ran the tube thru it. Sealed it up with a bit of
Proseal.

I have not installed a tail-light, and don't plan to. I am going to use
the Wheelen or Aero-Flash system that has the white light as part of the
wingtip assembly.

If you can't find the nylon tube where you are I'll be happy to get some
for you and send it to you. It's pretty common at the big home depot
stores around here.

Tim

----------
From: David Ricker[SMTP:ricker@dbis.ns.ca]
Reply To: murphy-rebel@dcsol.com
Sent: Monday, April 06, 1998 12:41 PM
To: (Murphy Rebel)
Subject: Re: Plumbing

Tim, group

Do tell more about your in-wing conduit.

We have been contemplating how it should be implemented but to this
point haven't gotten past thinking about it. As you are doing, we
thought of some sort of non-conductive (plastic) tube that could permit
after the fact extraction and installation of wiring.

How have you mounted it? Where is the tube sourced? Does Murphy have
any suggestions for this? What have others done?

How about the top of fin/rudder light, what have people done here?

On the Pitot/static kit from Murphy, again, we have not heard of this,
what do you get & what do they want for it? Is there the heated tube
like you find on the typical Cessna? What is the typical builder
installing?

I have seen a couple of installations with tubes sticking out the end of
the wing strut but this method seems to lack some polish and I am
somewhat sceptical about the accuracy of this "align it by eye" setup.

Thanks in advance.....

Dave Ricker
Francine Desharnais
Nova Scotia
Canada
Elite #583

Tim Carter wrote:

Joel:

I have MAM's pitot/static kit. They recommend running the lines down

the

lift strut into the cockpit.

I have also put a nylon conduit down the wing root rib section to carry

the

electrical wires to the lights. It is a 1/2" hole that exits the solid
root nose rib in the center of the aft stiffing swage. This was

confirmed

with MAM.

You could perhaps run the pitot/staic lines thru the same location as

well.

I bet a 1/2" hole is enough space for more than just wires.

I am going to run my pitot/static down the strut.

Tim

----------
From: Joel Jacobs[SMTP:jj@netexp.net]
Reply To: murphy-rebel@dcsol.com
Sent: Monday, April 06, 1998 7:31 AM
To: Murphy Rebel
Subject: Plumbing

Hi folks,
I'm ready to install the pitot/static lines in my wing and I was

wondering

where would be the best exit location. In the root nose rib or through

the

lift strut. If through the nose rib, what type of fittings could be

used?

Thanks
Joel

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