The Murphy Builders Site

Bob,

How far back behind the seat is the pump for floats? I was planning on
running my fuel lines back and down the sides forward of the rear window,
then together behind the seats with a drain, and one line up the center, on
top of the floor, with a cover. I would not want to reroute them if and when
I install floats. is there any other problems with the fuel lines on top of
the floor between the seats, like controls or lines associated with the
floats?

Bruce 357R
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Hi Bruce !

The pump sits about 6 - 12" behind the seats, as I recall, but
I don't think the position is critical. The hydraulic lines to & from the
pump run forward, as well, between the seats, beside or above the
control cables. It gets a bit crowded down there ! Having the
fuel lines between the seats on the forward floor would make them
a bit more vulnerable than on the sides.

You might be better to run your lines along the sides, under
the doors. This should be a pretty safe place for them, especially
if you cover them. (Clear 1/16" Lexan would be strong & allow inspection.)
Running drains down behind the doors would leave them close to the
original position, where they'll be accessible. Be sure to mount
the drains on a separate piece of aluminum, maybe a 3" circle -
so you can replace them easily if (when) they leak. If you don't
do this, you'll have to remove a piece of inner floor to get at
them, instead of just working outside.

.....bobp

---------------------------------orig.----------------------------------
At 08:35 AM 2/14/01 EST, you wrote:

Bob,

How far back behind the seat is the pump for floats? I was planning on
running my fuel lines back and down the sides forward of the rear window,
then together behind the seats with a drain, and one line up the center, on
top of the floor, with a cover. I would not want to reroute them if and when
I install floats. is there any other problems with the fuel lines on top of
the floor between the seats, like controls or lines associated with the
floats?

Bruce 357R
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If you go to my home page and click on Rebel pictures completions then on jack Weibes
plane the fourth picture shows his amphib pump.

Bob Patterson wrote:

Hi Bruce !

The pump sits about 6 - 12" behind the seats, as I recall, but
I don't think the position is critical. The hydraulic lines to & from the
pump run forward, as well, between the seats, beside or above the
control cables. It gets a bit crowded down there ! Having the
fuel lines between the seats on the forward floor would make them
a bit more vulnerable than on the sides.

You might be better to run your lines along the sides, under
the doors. This should be a pretty safe place for them, especially
if you cover them. (Clear 1/16" Lexan would be strong & allow inspection.)
Running drains down behind the doors would leave them close to the
original position, where they'll be accessible. Be sure to mount
the drains on a separate piece of aluminum, maybe a 3" circle -
so you can replace them easily if (when) they leak. If you don't
do this, you'll have to remove a piece of inner floor to get at
them, instead of just working outside.

.....bobp

---------------------------------orig.----------------------------------
At 08:35 AM 2/14/01 EST, you wrote:

Bob,

How far back behind the seat is the pump for floats? I was planning on
running my fuel lines back and down the sides forward of the rear window,
then together behind the seats with a drain, and one line up the center, on
top of the floor, with a cover. I would not want to reroute them if and when
I install floats. is there any other problems with the fuel lines on top of
the floor between the seats, like controls or lines associated with the
floats?

Bruce 357R
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--
Wray Thompson ...Rebel 306 ...home page http://wrayt.tripod.com/
My ICQ number is 29764664


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Thanks Bob,

MAM suggested routing fuel lines up the center between the seats. I believe
they might not like the side locations because of a few landing accidents
were the gear collapsed into the fuselage and severed the gas lines running
under the doors. I have spring gear which would not present the same problem.
This is the impression I got after talking with MAM about it.

I have no problem routing along the sides. It will require two drains at the
rear instead of one, if the lines joined and ran up the center. But they
would be more concealed and less vulnerable on the sides. Sure wish I lived
closer so I could see a few more completed aircraft for reference.

Bruce 357R
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Thanks Wray, I'll look up Jacks float pump pictures now. I remember seeing
those photos before but had forgotten about them.

Bruce 357R

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Hi Bruce !

I think the severed fuel lines were UNDER the inner floor -
also, I've only heard of TWO incidents where this happened. It wasn't
a big problem once the fuel valve was turned off - which is the
first thing to do in an accident, anyway !

Keeping the lines separate as far as possible helps with
redundancy in case of contamination or air blocks. The big pain with
a center drain at the back is that you have to crawl under the Rebel
to drain fuel for a pre-flight - just awkward enough that one might
be tempted to skip it !

You might have <other> problems with the spring gear ...
but I'm sure you've read ALL the ongoing stories of fixes in the
archives ! :-( Probably good to incorporate whatever 'beefups'
you feel might be appropriate NOW, while building ....

......bobp

------------------------------orig.------------------------------------
At 08:30 PM 2/15/01 EST, you wrote:

Thanks Bob,

MAM suggested routing fuel lines up the center between the seats. I believe
they might not like the side locations because of a few landing accidents
were the gear collapsed into the fuselage and severed the gas lines running
under the doors. I have spring gear which would not present the same problem.
This is the impression I got after talking with MAM about it.

I have no problem routing along the sides. It will require two drains at the
rear instead of one, if the lines joined and ran up the center. But they
would be more concealed and less vulnerable on the sides. Sure wish I lived
closer so I could see a few more completed aircraft for reference.

Bruce 357R
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I ran my fuel lines behind the aft windows, under the floor to a "cross"
connection that is located left of the centerline of the fuselage. I have a
short stub on the aft connection of the cross that leads to an easy to reach
fuel drain on the left side of the fuselage. The stub is the lowest point
of the system and should collect any water in the lines. A line connected
to the forward connection of the cross passes through the two carrythroughs
and the firewall.


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Hi Bill,

Most installations seem to be behind the doors like you've mentioned. Run
down into the floor to a T, then forward to your fuel selector. This T is
also a good place for a fuel drain since it is a low point when sitting in
the 3 point position.

Mike

----- Original Message -----
From: <bdelcambre@cox-internet.com>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, May 04, 2003 9:12 AM
Subject: Fuel line routing

Hi group,

I'm needing to begin routing fuel lines from the wings, down into the

lower fuse section in my Moose. I've looked at about a dozen possible
routes to do the lines, but haven't settled. Is there a tried and true way
to route these things fairly easily? The front posts don't seem too
appealing, due to cable activity. Rear posts look more promising, but once
again, I don't want to invent the wheel if I can just copy a good layout.

Thanks,

Bill Delcambre

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Hi group,

I'm needing to begin routing fuel lines from the wings, down into the lower fuse section in my Moose. I've looked at about a dozen possible routes to do the lines, but haven't settled. Is there a tried and true way to route these things fairly easily? The front posts don't seem too appealing, due to cable activity. Rear posts look more promising, but once again, I don't want to invent the wheel if I can just copy a good layout.

Thanks,

Bill Delcambre



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I ran mine down the inside of the rear door post. Thence forward to my
header tank with a drain. I plan to run the header tank vent line up the
front of the front door post, just inside the windshield.
George Coy

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
bdelcambre@cox-internet.com
Sent: Sunday, May 04, 2003 1:13 PM
To: murphy-rebel@dcsol.com
Subject: Fuel line routing

Hi group,

I'm needing to begin routing fuel lines from the wings, down into the lower
fuse section in my Moose. I've looked at about a dozen possible routes to
do the lines, but haven't settled. Is there a tried and true way to route
these things fairly easily? The front posts don't seem too appealing, due
to cable activity. Rear posts look more promising, but once again, I don't
want to invent the wheel if I can just copy a good layout.

Thanks,

Bill Delcambre



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Hi Bill

Food for thougt. Remeber I have only got a Rebel.

Wing into fuselodge, turn 90* reward,shut off valve, tubing follows curve at
rear door post,run down rear door post, curve slightly forward then down to
halfway on the corner wraps, install "T" fitting, run a line to install a
quick drain in the floor, run the fuel line forward along on corner wrap to
cage,curve line to run to centre on top of carrythrough just behind the
front , just to left of centre install "T" fitting,run forward to firewall,
turn left and upward to gascolator fitting through the firewall.Do the same
with the other line. This gives a drain on both sides at the low
point.Running the lines together on the carrythrough keeps the back floor
clean.

I installed 1" thick styrofoam with plywood and carpet on it in the
back.This gives me a good storage area as well as burries the fuel lines to
the drains, This floor of course is removeable giving access to fuel line
installation.
With the elevator cables in the centre I'm not sure how I would join the
fuel lines together behind the seats.


I would do this again if I were to do it over again.

Good Luck
Murray
-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
bdelcambre@cox-internet.com
Sent: Sunday, May 04, 2003 10:13 AM
To: murphy-rebel@dcsol.com
Subject: Fuel line routing


Hi group,

I'm needing to begin routing fuel lines from the wings, down into the lower
fuse section in my Moose. I've looked at about a dozen possible routes to
do the lines, but haven't settled. Is there a tried and true way to route
these things fairly easily? The front posts don't seem too appealing, due
to cable activity. Rear posts look more promising, but once again, I don't
want to invent the wheel if I can just copy a good layout.

Thanks,

Bill Delcambre



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Thanks for the confirmation, fellas. I kind of figured INSIDE the rear post was the ticket. Removing the corner wraps revealed that such a route will be a snap.

Thanks again.

Bill Delcambre

From: "George Coy" <george@gesoco.com>
Date: 2003/05/04 Sun PM 03:27:06 CDT
To: murphy-rebel@dcsol.com
Subject: RE: Fuel line routing

I ran mine down the inside of the rear door post. Thence forward to my
header tank with a drain. I plan to run the header tank vent line up the
front of the front door post, just inside the windshield.
George Coy

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