The Murphy Builders Site

I have recently completed the installation of a heated pitot tube in my left
wing. I ran aluminum tubing through the leading edge ribs to a bulkhead
fitting at the wing root. My plan was to then switch to nyloseal tubing the
rest of the way. Why not nyloseal all the way? Hell, I don't know! Seemed
like a good idea at the time. Then I discovered that there are no threaded
nyloseal fittings that are compatible with metal AN fittings. So I have to
use an AN bulkhead fitting that adapts to a regular push on tube fitting.
Rats. I wanted threaded fittings all the way. Maybe I'll just yank the
aluminum tubing and AN fittings out and go nyloseal all the way. What have
you other builders done?

Mike Kimball




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Mike I just used push on fittings on mine with no problems put a double
wrap of safety wire on each joint and it won't leak. On the pitot line
where it enters the fuselage use a tee instead of an elbow and add a
lenghth of hose pointing down with a cap on the end for any water that gets
into the system to collect in. I didn't do this and had my airspeed freeze
while flying one day.
Drew

At 05:02 PM 3/2/01 -0900, you wrote:

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I have recently completed the installation of a heated pitot tube in my left
wing. I ran aluminum tubing through the leading edge ribs to a bulkhead
fitting at the wing root. My plan was to then switch to nyloseal tubing the
rest of the way. Why not nyloseal all the way? Hell, I don't know! Seemed
like a good idea at the time. Then I discovered that there are no threaded
nyloseal fittings that are compatible with metal AN fittings. So I have to
use an AN bulkhead fitting that adapts to a regular push on tube fitting.
Rats. I wanted threaded fittings all the way. Maybe I'll just yank the
aluminum tubing and AN fittings out and go nyloseal all the way. What have
you other builders done?

Mike Kimball

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Mike

I have a heated pitot tube in my right wing.
I ran 2 aluminum tubes (pitot & static) from the pitot tube through grommets
that stick out of the lower leading edge at the wing attach point.
This way I have nothing but aluminum sealed away in the wing. I never trust
nylon tubing to last forever and expect to replace it years down the road.
Then I ran nylon tubing down the wing strut and through grommets in the side
of the fuselage.
There they connect into 90o compression fittings that then go up to the ASI.
I'll post 3 pictures on dcsol showing these points.

Rick Ford

----- Original Message -----
From: AGT <agt@mosquitonet.com>
To: <murphy-rebel@dcsol.com>
Sent: Friday, March 02, 2001 9:02 PM
Subject: Pitot installation


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I have recently completed the installation of a heated pitot tube in my

left

wing. I ran aluminum tubing through the leading edge ribs to a bulkhead
fitting at the wing root. My plan was to then switch to nyloseal tubing

the

rest of the way. Why not nyloseal all the way? Hell, I don't know!

Seemed

like a good idea at the time. Then I discovered that there are no

threaded

nyloseal fittings that are compatible with metal AN fittings. So I have

to

use an AN bulkhead fitting that adapts to a regular push on tube fitting.
Rats. I wanted threaded fittings all the way. Maybe I'll just yank the
aluminum tubing and AN fittings out and go nyloseal all the way. What

have

you other builders done?

Mike Kimball

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Did you go out the lower leading edge because you didn't want to weaken the
root rib with holes? I went out the root rib. I also wanted aluminum in
the wing for the same reason as you. I'm going to leave the aluminum tubing
in the wing, and use a bulkhead fitting at the root rib that adapts to a
push on tube fitting to convert to nylon tubing there. Haven't figured out
where I go from there yet. Just got the fuselage tailcone done. I've got a
ways to go.

Mike

-----Original Message-----
From: murphy-rebel@dcsol.com [mailto:murphy-rebel@dcsol.com]On Behalf Of
Rick and Cathy Ford
Sent: Sunday, March 04, 2001 5:07 AM
To: murphy-rebel@dcsol.com
Subject: Re: Pitot installation


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Mike

I have a heated pitot tube in my right wing.
I ran 2 aluminum tubes (pitot & static) from the pitot tube through grommets
that stick out of the lower leading edge at the wing attach point.
This way I have nothing but aluminum sealed away in the wing. I never trust
nylon tubing to last forever and expect to replace it years down the road.
Then I ran nylon tubing down the wing strut and through grommets in the side
of the fuselage.
There they connect into 90o compression fittings that then go up to the ASI.
I'll post 3 pictures on dcsol showing these points.

Rick Ford

----- Original Message -----
From: AGT <agt@mosquitonet.com>
To: <murphy-rebel@dcsol.com>
Sent: Friday, March 02, 2001 9:02 PM
Subject: Pitot installation


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http://www.dcsol.com:81/public/default.htm
username: rebel password: builder

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I have recently completed the installation of a heated pitot tube in my

left

wing. I ran aluminum tubing through the leading edge ribs to a bulkhead
fitting at the wing root. My plan was to then switch to nyloseal tubing

the

rest of the way. Why not nyloseal all the way? Hell, I don't know!

Seemed

like a good idea at the time. Then I discovered that there are no

threaded

nyloseal fittings that are compatible with metal AN fittings. So I have

to

use an AN bulkhead fitting that adapts to a regular push on tube fitting.
Rats. I wanted threaded fittings all the way. Maybe I'll just yank the
aluminum tubing and AN fittings out and go nyloseal all the way. What

have

you other builders done?

Mike Kimball

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Mike
I went this way because I have a switch panel above the windshield, thus
there are a lot of wires routed down each side of the windshield.
I didn't want to try adding a couple nylon tubes in there also.
Your installation may be different and will allow you to route the tubes
there.
I found that area a little difficult to work with because there are no
obvious provisions for tubing and wiring.


Rick.

----- Original Message -----
From: AGT <agt@mosquitonet.com>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, March 04, 2001 1:37 PM
Subject: RE: Pitot installation


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Did you go out the lower leading edge because you didn't want to weaken

the

root rib with holes? I went out the root rib. I also wanted aluminum in
the wing for the same reason as you. I'm going to leave the aluminum

tubing

in the wing, and use a bulkhead fitting at the root rib that adapts to a
push on tube fitting to convert to nylon tubing there. Haven't figured

out

where I go from there yet. Just got the fuselage tailcone done. I've got

a

ways to go.

Mike

-----Original Message-----
From: murphy-rebel@dcsol.com [mailto:murphy-rebel@dcsol.com]On Behalf Of
Rick and Cathy Ford
Sent: Sunday, March 04, 2001 5:07 AM
To: murphy-rebel@dcsol.com
Subject: Re: Pitot installation

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http://www.dcsol.com:81/public/default.htm
username: rebel password: builder

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Mike

I have a heated pitot tube in my right wing.
I ran 2 aluminum tubes (pitot & static) from the pitot tube through

grommets

that stick out of the lower leading edge at the wing attach point.
This way I have nothing but aluminum sealed away in the wing. I never

trust

nylon tubing to last forever and expect to replace it years down the road.
Then I ran nylon tubing down the wing strut and through grommets in the

side

of the fuselage.
There they connect into 90o compression fittings that then go up to the

ASI.

I'll post 3 pictures on dcsol showing these points.

Rick Ford

----- Original Message -----
From: AGT <agt@mosquitonet.com>
To: <murphy-rebel@dcsol.com>
Sent: Friday, March 02, 2001 9:02 PM
Subject: Pitot installation

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username: rebel password: builder

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I have recently completed the installation of a heated pitot tube in my

left

wing. I ran aluminum tubing through the leading edge ribs to a bulkhead
fitting at the wing root. My plan was to then switch to nyloseal tubing

the

rest of the way. Why not nyloseal all the way? Hell, I don't know!

Seemed

like a good idea at the time. Then I discovered that there are no

threaded

nyloseal fittings that are compatible with metal AN fittings. So I have

to

use an AN bulkhead fitting that adapts to a regular push on tube

fitting.

Rats. I wanted threaded fittings all the way. Maybe I'll just yank the
aluminum tubing and AN fittings out and go nyloseal all the way. What

have

you other builders done?

Mike Kimball

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with "unsubscribe murphy-rebel" in the body of the message.
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