header tanks

Drew Dalgleish · Post by **Drew Dalgleish** » Fri Feb 17, 2012 10:24 pm

Hi all
I've scared myself 3 times now having my engine quit when I have low fuel.
The first time I still had 5gal. in each tank but I was flying in very
rough conditions I pumped the throttle and the engine restarted so I
climbed until I was back over the airport and had no problems landing. The
second time I was trying to run the one tank dry so I could change the
sight tube. I forgot to change tanks before starting my desent and when I
pointed the nose down the engine quit with about 3gal remaining. The third
time I had about 5gal in the tank I was using and when I turned from 30deg
one way to 30deg the other the engine quit at fairly low altitude with
nowwhere to land. Luckily it started again quickly.
It's time for me to do something about this problem to my plane. I could
just make sure to carry at least 10gal. of gas in each tank but that really
isn't practical so unless someone has a better idea this is what I plan to
do. I'm going to make a header tank for each side and attach it in the fuel
line as high as possible where the line goes down vertically behind the
door. The tank doesn't need to be very big so I think I'll use 2" tubing
about 6" long with machined aluminum ends pro-sealed in place. The tube
will attach vertically to the bulkhead with a line attached top and bottom
and a vent line at the top going up to the overhead cross vent.
Any suggestions, flames, or words of encouragment fire away
Drew Dalgleish
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Wayne G. O'Shea · Post by **Wayne G. O'Shea** » Fri Feb 17, 2012 10:24 pm

Drew, for god sakes don't add fuel carrying to your cabin to make it into a
human toaster.

Have you put your airplane into a nose high altitude and checked your fuel
flow again to confirm that you don't have a problem?? I have flown my Rebel
for over 7 years and neither my 100 HP O-235 or 150 HP O-320 have ever
skipped a beat and I have made it home on fumes a few times and fly a very
tight (read 45* bank turn) circuits when I come into my own field.

Are your sight tubes seperated from the main tank outlet. FOKM's was not
when I got it from Bob and when you put as much as ten gallons into each
wing the fuel flow absolutely sucked as it drew air down the site tube into
the fuel flow. 5 gallons or less wouldn't even start to drain, as it was
easier to suck air. With the sight gauge seperated it will drain to the last
gallon. If you are running on BOTH, which you always should be for landing
or taking off, then the high wing tank will always bring gas down to the
gascolator.

Have you pulled the inlet screen on your carb (that most people ignore
during annual) to check if it is partical clogged? Maybe when your tanks are
low there isn't as much head pressure to push fuel past some goo..

Lost my best friend this week, please don't add to the list!

Best regards,
Wayne

----- Original Message -----
From: "Drew Dalgleish" <drewjan@cabletv.on.ca>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, September 29, 2002 9:58 PM
Subject: header tanks

Hi all
I've scared myself 3 times now having my engine quit when I have low fuel.
The first time I still had 5gal. in each tank but I was flying in very
rough conditions I pumped the throttle and the engine restarted so I
climbed until I was back over the airport and had no problems landing. The
second time I was trying to run the one tank dry so I could change the
sight tube. I forgot to change tanks before starting my desent and when I
pointed the nose down the engine quit with about 3gal remaining. The third
time I had about 5gal in the tank I was using and when I turned from 30deg
one way to 30deg the other the engine quit at fairly low altitude with
nowwhere to land. Luckily it started again quickly.
It's time for me to do something about this problem to my plane. I could
just make sure to carry at least 10gal. of gas in each tank but that

really

isn't practical so unless someone has a better idea this is what I plan to
do. I'm going to make a header tank for each side and attach it in the

fuel

line as high as possible where the line goes down vertically behind the
door. The tank doesn't need to be very big so I think I'll use 2" tubing
about 6" long with machined aluminum ends pro-sealed in place. The tube
will attach vertically to the bulkhead with a line attached top and bottom
and a vent line at the top going up to the overhead cross vent.
Any suggestions, flames, or words of encouragment fire away
Drew Dalgleish
-----------------------------------------------------

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Drew Dalgleish · Post by **Drew Dalgleish** » Fri Feb 17, 2012 10:24 pm

Thanks Wayne My fuel flow is 25gal/hr. each side. I've checked the finger
strainers in the tank, the screen in the carb and the gascolator. My vent
is separate from the sight guage. I've flown a tank down to the last drop
several times with no problems. I'm planning to keep the tanks as small as
practical I don't want to become a human torch either but I never thought
about it when I was flying the aeronca champ with 13gal in my lap. Don't
most aerobatic planes have a header tank in the cockpit?
I'm sorry to hear of the loss of your freind. I had a freind die in a
crash less than a year ago. It still hurts to think about him. He was the
brightest star in our neighborhood but somehow he stalled and spun while
frost flying which he had done for countless hours. Fly safe.
Drew

At 10:10 PM 9/29/2002 -0400, you wrote:

Drew, for god sakes don't add fuel carrying to your cabin to make it into a
human toaster.

Have you put your airplane into a nose high altitude and checked your fuel
flow again to confirm that you don't have a problem?? I have flown my Rebel
for over 7 years and neither my 100 HP O-235 or 150 HP O-320 have ever
skipped a beat and I have made it home on fumes a few times and fly a very
tight (read 45* bank turn) circuits when I come into my own field.

Are your sight tubes seperated from the main tank outlet. FOKM's was not
when I got it from Bob and when you put as much as ten gallons into each
wing the fuel flow absolutely sucked as it drew air down the site tube into
the fuel flow. 5 gallons or less wouldn't even start to drain, as it was
easier to suck air. With the sight gauge seperated it will drain to the last
gallon. If you are running on BOTH, which you always should be for landing
or taking off, then the high wing tank will always bring gas down to the
gascolator.

Have you pulled the inlet screen on your carb (that most people ignore
during annual) to check if it is partical clogged? Maybe when your tanks are
low there isn't as much head pressure to push fuel past some goo..

Lost my best friend this week, please don't add to the list!

Best regards,
Wayne

----- Original Message -----
From: "Drew Dalgleish" <drewjan@cabletv.on.ca>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, September 29, 2002 9:58 PM
Subject: header tanks

Hi all
I've scared myself 3 times now having my engine quit when I have low fuel.
The first time I still had 5gal. in each tank but I was flying in very
rough conditions I pumped the throttle and the engine restarted so I
climbed until I was back over the airport and had no problems landing. The
second time I was trying to run the one tank dry so I could change the
sight tube. I forgot to change tanks before starting my desent and when I
pointed the nose down the engine quit with about 3gal remaining. The third
time I had about 5gal in the tank I was using and when I turned from 30deg
one way to 30deg the other the engine quit at fairly low altitude with
nowwhere to land. Luckily it started again quickly.
It's time for me to do something about this problem to my plane. I could
just make sure to carry at least 10gal. of gas in each tank but that
really
isn't practical so unless someone has a better idea this is what I plan to
do. I'm going to make a header tank for each side and attach it in the
fuel
line as high as possible where the line goes down vertically behind the
door. The tank doesn't need to be very big so I think I'll use 2" tubing
about 6" long with machined aluminum ends pro-sealed in place. The tube
will attach vertically to the bulkhead with a line attached top and bottom
and a vent line at the top going up to the overhead cross vent.
Any suggestions, flames, or words of encouragment fire away
Drew Dalgleish
-----------------------------------------------------

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Wayne G. O'Shea · Post by **Wayne G. O'Shea** » Fri Feb 17, 2012 10:24 pm

You're probably right Drew, that the small headers are no big deal compared
to the fuel lines etc that you already have above your head. Something just
seems strange that you loose fuel flow with low tanks. Is it possible that
you have a sticky carb float or needle valve?? If it sticks in the up/off
position once the bowl was empty you are out of fuel. Just a BIG shot in the
dark!!

Wayne

----- Original Message -----
From: "Drew Dalgleish" <drewjan@cabletv.on.ca>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, September 29, 2002 10:53 PM
Subject: Re: header tanks

Thanks Wayne My fuel flow is 25gal/hr. each side. I've checked the

finger

strainers in the tank, the screen in the carb and the gascolator. My vent
is separate from the sight guage. I've flown a tank down to the last drop
several times with no problems. I'm planning to keep the tanks as small as
practical I don't want to become a human torch either but I never thought
about it when I was flying the aeronca champ with 13gal in my lap. Don't
most aerobatic planes have a header tank in the cockpit?
I'm sorry to hear of the loss of your freind. I had a freind die in a
crash less than a year ago. It still hurts to think about him. He was the
brightest star in our neighborhood but somehow he stalled and spun while
frost flying which he had done for countless hours. Fly safe.
Drew

At 10:10 PM 9/29/2002 -0400, you wrote:
Drew, for god sakes don't add fuel carrying to your cabin to make it into

a

human toaster.

Have you put your airplane into a nose high altitude and checked your

fuel

flow again to confirm that you don't have a problem?? I have flown my

Rebel

for over 7 years and neither my 100 HP O-235 or 150 HP O-320 have ever
skipped a beat and I have made it home on fumes a few times and fly a

very

tight (read 45* bank turn) circuits when I come into my own field.

Are your sight tubes seperated from the main tank outlet. FOKM's was not
when I got it from Bob and when you put as much as ten gallons into each
wing the fuel flow absolutely sucked as it drew air down the site tube

into

the fuel flow. 5 gallons or less wouldn't even start to drain, as it was
easier to suck air. With the sight gauge seperated it will drain to the

last

gallon. If you are running on BOTH, which you always should be for

landing

or taking off, then the high wing tank will always bring gas down to the
gascolator.

Have you pulled the inlet screen on your carb (that most people ignore
during annual) to check if it is partical clogged? Maybe when your tanks

are

low there isn't as much head pressure to push fuel past some goo..

Lost my best friend this week, please don't add to the list!

Best regards,
Wayne

----- Original Message -----
From: "Drew Dalgleish" <drewjan@cabletv.on.ca>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, September 29, 2002 9:58 PM
Subject: header tanks

Hi all
I've scared myself 3 times now having my engine quit when I have low

fuel.

The first time I still had 5gal. in each tank but I was flying in very
rough conditions I pumped the throttle and the engine restarted so I
climbed until I was back over the airport and had no problems landing.

The

second time I was trying to run the one tank dry so I could change the
sight tube. I forgot to change tanks before starting my desent and when

I

pointed the nose down the engine quit with about 3gal remaining. The

third

time I had about 5gal in the tank I was using and when I turned from

30deg

one way to 30deg the other the engine quit at fairly low altitude with
nowwhere to land. Luckily it started again quickly.
It's time for me to do something about this problem to my plane. I

could

just make sure to carry at least 10gal. of gas in each tank but that
really
isn't practical so unless someone has a better idea this is what I plan

to

do. I'm going to make a header tank for each side and attach it in the
fuel
line as high as possible where the line goes down vertically behind the
door. The tank doesn't need to be very big so I think I'll use 2"

tubing

about 6" long with machined aluminum ends pro-sealed in place. The tube
will attach vertically to the bulkhead with a line attached top and

bottom

and a vent line at the top going up to the overhead cross vent.
Any suggestions, flames, or words of encouragment fire away
Drew Dalgleish
-----------------------------------------------------

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Walter Klatt · Post by **Walter Klatt** » Fri Feb 17, 2012 10:24 pm

Drew, do you use external vent tubes? I have them on my fuel caps with
flared openings into the wind stream. I have a Flowscan transducer in my
line after the gascolator that takes .5 PSI to operate, so want to be sure
there is always sufficient positive pressure in my tanks. They are vented to
each other through the cabin as well. So far I have never had a problem, but
also have never run them below about 4 gals per tank.

Walter

-----Original Message-----
From: murphy-rebel@dcsol.com [mailto:murphy-rebel@dcsol.com]On Behalf Of
Drew Dalgleish
Sent: Sunday, September 29, 2002 7:54 PM
To: murphy-rebel@dcsol.com
Subject: Re: header tanks

Thanks Wayne My fuel flow is 25gal/hr. each side. I've checked the finger
strainers in the tank, the screen in the carb and the gascolator. My vent
is separate from the sight guage. I've flown a tank down to the last drop
several times with no problems. I'm planning to keep the tanks as small as
practical I don't want to become a human torch either but I never thought
about it when I was flying the aeronca champ with 13gal in my lap. Don't
most aerobatic planes have a header tank in the cockpit?
I'm sorry to hear of the loss of your freind. I had a freind die in a
crash less than a year ago. It still hurts to think about him. He was the
brightest star in our neighborhood but somehow he stalled and spun while
frost flying which he had done for countless hours. Fly safe.
Drew

At 10:10 PM 9/29/2002 -0400, you wrote:

Drew, for god sakes don't add fuel carrying to your cabin to make it into a
human toaster.

Have you put your airplane into a nose high altitude and checked your fuel
flow again to confirm that you don't have a problem?? I have flown my Rebel
for over 7 years and neither my 100 HP O-235 or 150 HP O-320 have ever
skipped a beat and I have made it home on fumes a few times and fly a very
tight (read 45* bank turn) circuits when I come into my own field.

Are your sight tubes seperated from the main tank outlet. FOKM's was not
when I got it from Bob and when you put as much as ten gallons into each
wing the fuel flow absolutely sucked as it drew air down the site tube into
the fuel flow. 5 gallons or less wouldn't even start to drain, as it was
easier to suck air. With the sight gauge seperated it will drain to the

last

gallon. If you are running on BOTH, which you always should be for landing
or taking off, then the high wing tank will always bring gas down to the
gascolator.

Have you pulled the inlet screen on your carb (that most people ignore
during annual) to check if it is partical clogged? Maybe when your tanks

are

low there isn't as much head pressure to push fuel past some goo..

Lost my best friend this week, please don't add to the list!

Best regards,
Wayne

----- Original Message -----
From: "Drew Dalgleish" <drewjan@cabletv.on.ca>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, September 29, 2002 9:58 PM
Subject: header tanks

Hi all
I've scared myself 3 times now having my engine quit when I have low

fuel.

The first time I still had 5gal. in each tank but I was flying in very
rough conditions I pumped the throttle and the engine restarted so I
climbed until I was back over the airport and had no problems landing.

The

second time I was trying to run the one tank dry so I could change the
sight tube. I forgot to change tanks before starting my desent and when I
pointed the nose down the engine quit with about 3gal remaining. The

third

time I had about 5gal in the tank I was using and when I turned from

30deg

one way to 30deg the other the engine quit at fairly low altitude with
nowwhere to land. Luckily it started again quickly.
It's time for me to do something about this problem to my plane. I

could

just make sure to carry at least 10gal. of gas in each tank but that
really
isn't practical so unless someone has a better idea this is what I plan

to

do. I'm going to make a header tank for each side and attach it in the
fuel
line as high as possible where the line goes down vertically behind the
door. The tank doesn't need to be very big so I think I'll use 2" tubing
about 6" long with machined aluminum ends pro-sealed in place. The tube
will attach vertically to the bulkhead with a line attached top and

bottom

and a vent line at the top going up to the overhead cross vent.
Any suggestions, flames, or words of encouragment fire away
Drew Dalgleish
-----------------------------------------------------

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BILNEWKIRK · Post by **BILNEWKIRK** » Fri Feb 17, 2012 10:24 pm

Drew;
Are you positive you are not pulling a vacuum? I had to dead-stick with 5 gal. in each tank because of negative pressure.

Bill Newkirk
Rebel376

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Rick Harper · Post by **Rick Harper** » Fri Feb 17, 2012 10:24 pm

G'day Everyone !

I just moved my sight tubes at the bottom to common with the outlets ... to make a diagonal sight tube that would be accurate right down to a gallon (or even less) .... and they seem to be working well ... AND the readings are very accurate ! (at last ) ...

I have good, forced / positive pressure vents on both tanks, and at the TEE piece (where the fuel comes out of the tank , down to the fuel line and also back up for the sight glass), I have inserted a restrictor plug in the feed line back up to the sight glass (to dampen the fuel reading) and have had no problems as yet (touch wood) in regards to "sucking air instead of fuel" .....

I can't see any other "easy way" to get the readings I want ...... any ideas or comments ?

Rick & Wendy Harper
541R

----- Original Message -----
From: Drew Dalgleish (drewjan@cabletv.on.ca)
To: murphy-rebel@dcsol.com (murphy-rebel@dcsol.com)
Sent: Monday, September 30, 2002 11:58 AM
Subject: header tanks

Hi all
I've scared myself 3 times now having my engine quit when I have low fuel.
The first time I still had 5gal. in each tank but I was flying in very
rough conditions I pumped the throttle and the engine restarted so I
climbed until I was back over the airport and had no problems landing. The
second time I was trying to run the one tank dry so I could change the
sight tube. I forgot to change tanks before starting my desent and when I
pointed the nose down the engine quit with about 3gal remaining. The third
time I had about 5gal in the tank I was using and when I turned from 30deg
one way to 30deg the other the engine quit at fairly low altitude with
nowwhere to land. Luckily it started again quickly.
It's time for me to do something about this problem to my plane. I could
just make sure to carry at least 10gal. of gas in each tank but that really
isn't practical so unless someone has a better idea this is what I plan to
do. I'm going to make a header tank for each side and attach it in the fuel
line as high as possible where the line goes down vertically behind the
door. The tank doesn't need to be very big so I think I'll use 2" tubing
about 6" long with machined aluminum ends pro-sealed in place. The tube
will attach vertically to the bulkhead with a line attached top and bottom
and a vent line at the top going up to the overhead cross vent.
Any suggestions, flames, or words of encouragment fire away
Drew Dalgleish
-----------------------------------------------------

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klehman · Post by **klehman** » Fri Feb 17, 2012 10:24 pm

Hi Rick

I presume you've seen MAM's bulletin that says to use a separate outlet
now for the bottom of the sight gauge to eliminate any chance of air
entering the fuel supply there. A restrictor to dampen fuel readings
might not be much of a restriction to airflow if a slug of air got in
there.

I kept my sight gauge completely separate from the fuel supply and from
the cross vent.

Ken

G'day Everyone !

I just moved my sight tubes at the bottom to common with the outlets ... to make a

diagonal sight tube that would be accurate right down to a gallon (or
even less) .... and
they seem to be working well ... AND the readings are very accurate !
(at last ) ...

I have good, forced / positive pressure vents on both tanks, and at the TEE piece

(where the fuel comes out of the tank , down to the fuel line and also
back up for the
sight glass), I have inserted a restrictor plug in the feed line back up
to the sight glass
(to dampen the fuel reading) and have had no problems as yet (touch
wood) in regards
to "sucking air instead of fuel" .....

I can't see any other "easy way" to get the readings I want ...... any ideas or comments

?

Rick & Wendy Harper
541R

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Drew Dalgleish · Post by **Drew Dalgleish** » Fri Feb 17, 2012 10:24 pm

Walter thanks for that idea. I don't have ram air to my tanks just the
1/8" vent hole at the back of each fuel filler neck. I don't think that is
my problem though. I think that fuel sloshing in the tank is uncovering the
outlet and letting air into the lines because I've flown with low fuel
enough times without any problems.
Phil thanks for the input I'm hoping that by putting the tanks as high as
possible I'll have enough head pressure to keep my engine running.
Wayne how dare you suggest my marvelous dribbler carb is less than
perfect ;) Any idea on how to check it?

Drew

At 08:08 PM 9/29/2002 -0700, you wrote:

Drew, do you use external vent tubes? I have them on my fuel caps with
flared openings into the wind stream. I have a Flowscan transducer in my
line after the gascolator that takes .5 PSI to operate, so want to be sure
there is always sufficient positive pressure in my tanks. They are vented to
each other through the cabin as well. So far I have never had a problem, but
also have never run them below about 4 gals per tank.

Walter

-----Original Message-----
From: murphy-rebel@dcsol.com [mailto:murphy-rebel@dcsol.com]On Behalf Of
Drew Dalgleish
Sent: Sunday, September 29, 2002 7:54 PM
To: murphy-rebel@dcsol.com
Subject: Re: header tanks

Thanks Wayne My fuel flow is 25gal/hr. each side. I've checked the finger
strainers in the tank, the screen in the carb and the gascolator. My vent
is separate from the sight guage. I've flown a tank down to the last drop
several times with no problems. I'm planning to keep the tanks as small as
practical I don't want to become a human torch either but I never thought
about it when I was flying the aeronca champ with 13gal in my lap. Don't
most aerobatic planes have a header tank in the cockpit?
I'm sorry to hear of the loss of your freind. I had a freind die in a
crash less than a year ago. It still hurts to think about him. He was the
brightest star in our neighborhood but somehow he stalled and spun while
frost flying which he had done for countless hours. Fly safe.
Drew

At 10:10 PM 9/29/2002 -0400, you wrote:
Drew, for god sakes don't add fuel carrying to your cabin to make it into a
human toaster.

Have you put your airplane into a nose high altitude and checked your fuel
flow again to confirm that you don't have a problem?? I have flown my Rebel
for over 7 years and neither my 100 HP O-235 or 150 HP O-320 have ever
skipped a beat and I have made it home on fumes a few times and fly a very
tight (read 45* bank turn) circuits when I come into my own field.

Are your sight tubes seperated from the main tank outlet. FOKM's was not
when I got it from Bob and when you put as much as ten gallons into each
wing the fuel flow absolutely sucked as it drew air down the site tube into
the fuel flow. 5 gallons or less wouldn't even start to drain, as it was
easier to suck air. With the sight gauge seperated it will drain to the
last
gallon. If you are running on BOTH, which you always should be for landing
or taking off, then the high wing tank will always bring gas down to the
gascolator.

Have you pulled the inlet screen on your carb (that most people ignore
during annual) to check if it is partical clogged? Maybe when your tanks
are
low there isn't as much head pressure to push fuel past some goo..

Lost my best friend this week, please don't add to the list!

Best regards,
Wayne

----- Original Message -----
From: "Drew Dalgleish" <drewjan@cabletv.on.ca>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, September 29, 2002 9:58 PM
Subject: header tanks

Hi all
I've scared myself 3 times now having my engine quit when I have low
fuel.
The first time I still had 5gal. in each tank but I was flying in very
rough conditions I pumped the throttle and the engine restarted so I
climbed until I was back over the airport and had no problems landing.
The
second time I was trying to run the one tank dry so I could change the
sight tube. I forgot to change tanks before starting my desent and when I
pointed the nose down the engine quit with about 3gal remaining. The
third
time I had about 5gal in the tank I was using and when I turned from
30deg
one way to 30deg the other the engine quit at fairly low altitude with
nowwhere to land. Luckily it started again quickly.
It's time for me to do something about this problem to my plane. I
could
just make sure to carry at least 10gal. of gas in each tank but that
really
isn't practical so unless someone has a better idea this is what I plan
to
do. I'm going to make a header tank for each side and attach it in the
fuel
line as high as possible where the line goes down vertically behind the
door. The tank doesn't need to be very big so I think I'll use 2" tubing
about 6" long with machined aluminum ends pro-sealed in place. The tube
will attach vertically to the bulkhead with a line attached top and
bottom
and a vent line at the top going up to the overhead cross vent.
Any suggestions, flames, or words of encouragment fire away
Drew Dalgleish
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Wayne G. O'Shea · Post by **Wayne G. O'Shea** » Fri Feb 17, 2012 10:24 pm

The only way to check the possiblitly of the float hanging up on the carb
body is to take it apart and if not sure what to do with it drop it into an
engine shop for experienced service. To check if the fuel level is set
correct and the float valve is functioning correctly put a 90* fitting on
the carb drain plug fitting and a clear line to see how high up the body the
fuel goes when the tanks are turned on. The fuel should be about x/y" below
the gasket face between the body and the upper section of the carb. Sorry
but brain ain't up to speed again yet and I will have to see if I can find
my carb information to give you the x/y" dimension. 3/8" comes to mind, but
I don't think it's right.

My advise for your fuel neck vent holes its to put a rivet in each one to
fill them and add a ram air tube at the wing root in your x-over vent tube.
Put some pressure in the tanks and I think your hickups will go away.

Wayne

----- Original Message -----
From: "Drew Dalgleish" <drewjan@cabletv.on.ca>
To: <murphy-rebel@dcsol.com>
Sent: Monday, September 30, 2002 10:14 PM
Subject: RE: header tanks

Walter thanks for that idea. I don't have ram air to my tanks just the
1/8" vent hole at the back of each fuel filler neck. I don't think that is
my problem though. I think that fuel sloshing in the tank is uncovering

the

outlet and letting air into the lines because I've flown with low fuel
enough times without any problems.
Phil thanks for the input I'm hoping that by putting the tanks as high

as

possible I'll have enough head pressure to keep my engine running.
Wayne how dare you suggest my marvelous dribbler carb is less than
perfect ;) Any idea on how to check it?

Drew

At 08:08 PM 9/29/2002 -0700, you wrote:
Drew, do you use external vent tubes? I have them on my fuel caps with
flared openings into the wind stream. I have a Flowscan transducer in my
line after the gascolator that takes .5 PSI to operate, so want to be

sure

there is always sufficient positive pressure in my tanks. They are vented

to

each other through the cabin as well. So far I have never had a problem,

but

also have never run them below about 4 gals per tank.

Walter

-----Original Message-----
From: murphy-rebel@dcsol.com [mailto:murphy-rebel@dcsol.com]On Behalf Of
Drew Dalgleish
Sent: Sunday, September 29, 2002 7:54 PM
To: murphy-rebel@dcsol.com
Subject: Re: header tanks

Thanks Wayne My fuel flow is 25gal/hr. each side. I've checked the

finger

strainers in the tank, the screen in the carb and the gascolator. My vent
is separate from the sight guage. I've flown a tank down to the last drop
several times with no problems. I'm planning to keep the tanks as small

as

practical I don't want to become a human torch either but I never thought
about it when I was flying the aeronca champ with 13gal in my lap. Don't
most aerobatic planes have a header tank in the cockpit?
I'm sorry to hear of the loss of your freind. I had a freind die in a
crash less than a year ago. It still hurts to think about him. He was the
brightest star in our neighborhood but somehow he stalled and spun while
frost flying which he had done for countless hours. Fly safe.
Drew

At 10:10 PM 9/29/2002 -0400, you wrote:
Drew, for god sakes don't add fuel carrying to your cabin to make it

into a

human toaster.

Have you put your airplane into a nose high altitude and checked your

fuel

flow again to confirm that you don't have a problem?? I have flown my

Rebel

for over 7 years and neither my 100 HP O-235 or 150 HP O-320 have ever
skipped a beat and I have made it home on fumes a few times and fly a

very

tight (read 45* bank turn) circuits when I come into my own field.

Are your sight tubes seperated from the main tank outlet. FOKM's was not
when I got it from Bob and when you put as much as ten gallons into each
wing the fuel flow absolutely sucked as it drew air down the site tube

into

the fuel flow. 5 gallons or less wouldn't even start to drain, as it was
easier to suck air. With the sight gauge seperated it will drain to the
last
gallon. If you are running on BOTH, which you always should be for

landing

or taking off, then the high wing tank will always bring gas down to the
gascolator.

Have you pulled the inlet screen on your carb (that most people ignore
during annual) to check if it is partical clogged? Maybe when your tanks
are
low there isn't as much head pressure to push fuel past some goo..

Lost my best friend this week, please don't add to the list!

Best regards,
Wayne

----- Original Message -----
From: "Drew Dalgleish" <drewjan@cabletv.on.ca>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, September 29, 2002 9:58 PM
Subject: header tanks

fuel.
The

when I

third
30deg
could
really

plan

to
fuel

the

tubing

tube

bottom

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Charles Bailey · Post by **Charles Bailey** » Fri Feb 17, 2012 10:24 pm

Walter,

I had an 1/8" hole in the front and back of the filler neck. With a full tank the aft hole just put a blue cast (100 low lead) on the wing aft of the filler neck (low pressure). I put alum tape over the aft hole and have no problem using just the front 1/8" hole, half covered with the filler cap. (120 HP Franklin O-235). I have not ran the tank lower than 6 US gal. and normally run on both tanks.

Chuck Bailey

Rebel 176

N225PC

From: Drew Dalgleish

Reply-To:

To: murphy-rebel@dcsol.com

Subject: RE: header tanks

Date: Mon, 30 Sep 2002 22:14:06 -0400

Walter thanks for that idea. I don't have ram air to my tanks just the

1/8" vent hole at the back of each fuel filler neck. I don't think that is

my problem though. I think that fuel sloshing in the tank is uncovering the

outlet and letting air into the lines because I've flown with low fuel

enough times without any problems.

Phil thanks for the input I'm hoping that by putting the tanks as high as

possible I'll have enough head pressure to keep my engine running.

Wayne how dare you suggest my marvelous dribbler carb is less than

perfect ;) Any idea on how to check it?

Drew

At 08:08 PM 9/29/2002 -0700, you wrote:

Drew, do you use external vent tubes? I have them on my fuel caps with

flared openings into the wind stream. I have a Flowscan transducer in my

line after the gascolator that takes .5 PSI to operate, so want to be sure

there is always sufficient positive pressure in my tanks. They are vented to

each other through the cabin as well. So far I have never had a problem, but

also have never run them below about 4 gals per tank.

Walter

-----Original Message-----

From: murphy-rebel@dcsol.com [mailto:murphy-rebel@dcsol.com]On Behalf Of

Drew Dalgleish

Sent: Sunday, September 29, 2002 7:54 PM

To: murphy-rebel@dcsol.com

Subject: Re: header tanks

Thanks Wayne My fuel flow is 25gal/hr. each side. I've checked the finger

strainers in the tank, the screen in the carb and the gascolator. My vent

is separate from the sight guage. I've flown a tank down to the last drop

several times with no problems. I'm planning to keep the tanks as small as

practical I don't want to become a human torch either but I never thought

about it when I was flying the aeronca champ with 13gal in my lap. Don't

most aerobatic planes have a header tank in the cockpit?

I'm sorry to hear of the loss of your freind. I had a freind die in a

crash less than a year ago. It still hurts to think about him. He was the

brightest star in our neighborhood but somehow he stalled and spun while

frost flying which he had done for countless hours. Fly safe.

Drew

At 10:10 PM 9/29/2002 -0400, you wrote:

Drew, for god sakes don't add fuel carrying to your cabin to make it into a

human toaster.

Have you put your airplane into a nose high altitude and checked your fuel

flow again to confirm that you don't have a problem?? I have flown my Rebel

for over 7 years and neither my 100 HP O-235 or 150 HP O-320 have ever

skipped a beat and I have made it home on fumes a few times and fly a very

tight (read 45* bank turn) circuits when I come into my own field.

Are your sight tubes seperated from the main tank outlet. FOKM's was not

when I got it from Bob and when you put as much as ten gallons into each

wing the fuel flow absolutely sucked as it drew air down the site tube into

the fuel flow. 5 gallons or less wouldn't even start to drain, as it was

easier to suck air. With the sight gauge seperated it will drain to the

last

gallon. If you are running on BOTH, which you always should be for landing

or taking off, then the high wing tank will always bring gas down to the

gascolator.

Have you pulled the inlet screen on your carb (that most people ignore

during annual) to check if it is partical clogged? Maybe when your tanks

are

low there isn't as much head pressure to push fuel past some goo..

Lost my best friend this week, please don't add to the list!

Best regards,

Wayne

----- Original Message -----

From: "Drew Dalgleish"

To:

Sent: Sunday, September 29, 2002 9:58 PM

Subject: header tanks

fuel.

The

third

30deg

could

really

to

fuel

bottom

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Drew Dalgleish · Post by **Drew Dalgleish** » Fri Feb 17, 2012 10:24 pm

Dale My outlets are at the rear of the tank.
Drew

At 01:43 PM 10/2/2002 -0400, you wrote:

Drew Are your fuel outlets at the rear of your tank or
at the centre? Dale
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