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Crvsecretary(at)aol.com
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 Posted: Sun May 07, 2006 1:17 pm Post subject: Fuel Line Choices |
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Hello Listers:
I do not come to the list often with questions, but I am at a crossroads and
would appreciate some constructive criticism please. I am assembling the
wing skeleton of my 601XL and I need to start drilling holes to run fuel lines.
Since I purchased the wing kit, I have barbed fittings and rubber fuel line
from Zenith - but everything I read on this list says there are much better
and safer alternatives than fuel line I might find on a Briggs & Stratton
lawnmower.......
I went to my local speed shop to ask about rigid fuel line and flare
fittings and he kept talking about automotive brake lines and Aeroquip flexible
braid lines. A quick look through Aircraft Spruce shows nylon & Aeroquip as
well. I am at a loss.
What are most of you using? Isn't rigid line brittle....that is, isn't some
flexability a good thing? If rigid line IS superior, where do I get it and
what special tools are needed? Is rubber hose with a metal braid with a 1000
PSI bursting pressure really necessary for our little Facet pumps?
Thanks in advance for your thoughts.
Regards,
Tracy Smith
Naugatuck, CT
601xl N458XL (reserved)
do not archive
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craig(at)craigandjean.com
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| Posted: Sun May 07, 2006 1:56 pm Post subject: Fuel Line Choices |
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I'm using Aeroquip braided line and AN-6 swivel fittings but from Summit
Racing instead of AS&S. This is fore and aft of the firewall. True the
pressure rating is way overkill but I like the protection from abrasion,
etc.
http://www.summitracing.com/
-- Craig
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frank.hinde(at)hp.com
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| Posted: Sun May 07, 2006 1:56 pm Post subject: Fuel Line Choices |
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Huge numbers of opinions all with pros and cons.
Basic rule, yes you can use rigid fuel line from Aircraft Spruce
provided it is not going across a flexible joint, I,e firewall to
engine....If you do that the line will break from fatigue.
The proper fittings are very expensive but light weight. They use a
special 37 deg flare tool which is a bit pricey in itself
Yu will want some flexible hoses and if you use the proper fittings you
can get a very acceptable copy of Aeroquip hoses by going to your local
Hydraulics shop that will sell you the same thing with steel fittings
(same braded hose) for MUCH less money. The only downside is that the
hydraulics shop probably won't have the swept fittings like
aeroquip...Summit Racing have their own Aeroquip knock offs if you want
to go this way.
There is another way which is what I did....
Use 1/4" brass compression fittings to crush a ring on the ends of the
alu tube. You can then use a 1/4" hardware store plumbing fitting (dab
of locktite to secure the thread)or use the brass ring to act like a
hose barb...you slip the rubber hose over the brass ring and use a hose
clamp to secure the hose.
Now I know everyone will be waving their arms in horror at this but this
setup has been running this way for 400 hours without a hint of
corrosion between the brass rings and alu tube or any problem with
leaking fittings.
Think carefully about how to avoid vapour lock is my only other
recommendation.
Frank
--
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n801bh(at)netzero.com
Guest
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| Posted: Sun May 07, 2006 2:24 pm Post subject: Fuel Line Choices |
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PS. If they ask the application tell them it is an "OFFROAD" vehicle. Do=
n't ask how I know. <G>
do not archive =
Ben Haas
N801BH
www.haaspowerair.com
-- "Craig Payne" <craig(at)craigandjean.com> wrote:
I'm using Aeroquip braided line and AN-6 swivel fittings but from Summit=
Racing instead of AS&S. This is fore and aft of the firewall. True the
pressure rating is way overkill but I like the protection from abrasion,=
etc.
http://www.summitracing.com/
-- Craig
=
=
=
=
=
=
=
<html><P>PS. If they ask the application tell them it is an "OFFROAD" ve=
hicle. Don't ask how I know. <G></P>
<P>do not archive <BR><BR><BR>Ben Haas<BR>N801BH<BR>www.haaspo=
werair.com<BR><BR>-- "Craig Payne" <craig(at)craigandjean=
.com> wrote:<BR>--> Zenith-List message posted=
by: "Craig Payne" <craig(at)craigandjean.com><BR=
| Quote: | <BR>I'm using Aeroquip braided line and A=
N-6 swivel fittings but from Summit<BR>Racing&n=
|
bsp;instead of AS&S. This is fore and&=
nbsp;aft of the firewall. True the<BR>pressure&=
nbsp;rating is way overkill but I like&nbs=
p;the protection from abrasion,<BR>etc.<BR><BR>http://www=
=
=
sp; - The Zenith-List Email Forum&n=
utilities such as the Subscriptions page,=
=
=
=
=
&nb=
sp; - NEW MATRONICS LIST WIKI -<BR>_=
- Check out the All New Matronics =
nbsp; &=
nbsp; &=
nbsp; &=
=
- List&=
p; &nbs=
p; &nbs=
p; -Matt Dralle, List Admin.=
=
=
<BR><BR><BR><BR> <BR> <BR>&nb=
sp;<BR><BR><BR><BR></P></html>
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craig(at)craigandjean.com
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gfmjr_20(at)hotmail.com
Guest
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| Posted: Sun May 07, 2006 3:57 pm Post subject: Fuel Line Choices |
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Tracy-
I'm using fuel injection fuel line (rubber) from my wing tanks to the
fuse wall.
Internal to the fuse I've run 3003 aluminum 3/8 lines with flared fittings
to the firewall.
In the engine compartment I'm back to rubber fuel lines. I've run this
combination
for many hours in another plane and am comfortable with its reliability and
maintainability.
George May
601XL 912s finally at the airport for fianl assembly
| Quote: | From: Crvsecretary(at)aol.com
Reply-To: zenith-list(at)matronics.com
To: zenith-list(at)matronics.com
Subject: Fuel Line Choices
Date: Sun, 7 May 2006 17:12:36 EDT
Hello Listers:
I do not come to the list often with questions, but I am at a crossroads
and
would appreciate some constructive criticism please. I am assembling the
wing skeleton of my 601XL and I need to start drilling holes to run fuel
lines.
Since I purchased the wing kit, I have barbed fittings and rubber fuel
line
from Zenith - but everything I read on this list says there are much
better
and safer alternatives than fuel line I might find on a Briggs & Stratton
lawnmower.......
I went to my local speed shop to ask about rigid fuel line and flare
fittings and he kept talking about automotive brake lines and Aeroquip
flexible
braid lines. A quick look through Aircraft Spruce shows nylon & Aeroquip
as
well. I am at a loss.
What are most of you using? Isn't rigid line brittle....that is, isn't
some
flexability a good thing? If rigid line IS superior, where do I get it
and
what special tools are needed? Is rubber hose with a metal braid with a
1000
PSI bursting pressure really necessary for our little Facet pumps?
Thanks in advance for your thoughts.
Regards,
Tracy Smith
Naugatuck, CT
601xl N458XL (reserved)
do not archive
|
_________________________________________________________________
On the road to retirement? Check out MSN Life Events for advice on how to
get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
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craig(at)craigandjean.com
Guest
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| Posted: Sun May 07, 2006 4:44 pm Post subject: Fuel Line Choices |
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I asked William Wynne (of Corvair fame) what his team has been putting in
XLs. He wrote:
"Our plane has 100% braided an6 to the tanks, Phil (Maxson)'s is only
braided to the fuel selector, it is stock ZAC from tanks to selector. I
don't like to encourage the use of hard AL lines in 601's because most
builders don't know how to make them right and in a bad accident they are
prone to leak a lot more than a braided line.
Braided lines are also hard to suck flat when a vent is restricted, easier
to disassemble to work, and not likely to be pinched flat especially when
they are hot compared to rubber hose."
William has more reason than most to worry about fuel systems. Go to the
very bottom of this page (under "What It's All About"):
http://www.flycorvair.com/hangar1005.html
If you would like the full story go to:
http://www.flycorvair.com/carbice.html
-- Craig
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BillHowerton
Guest
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| Posted: Sun May 07, 2006 4:59 pm Post subject: Fuel Line Choices |
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I've seen William's skin grafts in person... They ain't pretty.
When he and I had this same conversation, he said "if you just hit a fence,
or put it down in a field, the last thing you want to be thinking about is
"I smell fuel!". That was enough for me -- I've also put in braided lines
with AN-6 fittings all the way from the tanks to the carb.
---
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Crvsecretary(at)aol.com
Guest
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| Posted: Sun May 14, 2006 5:38 am Post subject: Fuel Line Choices |
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Hello Listers:
I have been travelling for the past week and unable to respond to replies to
my fuel line question and I want to thank everyone both on and off lists for
thier thoughts.
It looks like I'll run flexible in the wings and decide on the fuse &
firewall choices when I get there.
Again, my thanks to all.
Best Regards,
Tracy Smith
Naugatuck, CT
601xl N458XL (reserved)
do not archive
In a message dated 5/7/2006 8:45:32 PM Eastern Standard Time,
craig(at)craigandjean.com writes:
I asked William Wynne (of Corvair fame) what his team has been putting in
XLs. He wrote:
"Our plane has 100% braided an6 to the tanks, Phil (Maxson)'s is only
braided to the fuel selector, it is stock ZAC from tanks to selector. I
don't like to encourage the use of hard AL lines in 601's because most
builders don't know how to make them right and in a bad accident they are
prone to leak a lot more than a braided line.
Braided lines are also hard to suck flat when a vent is restricted, easier
to disassemble to work, and not likely to be pinched flat especially when
they are hot compared to rubber hose."
William has more reason than most to worry about fuel systems. Go to the
very bottom of this page (under "What It's All About"):
http://www.flycorvair.com/hangar1005.html
If you would like the full story go to:
http://www.flycorvair.com/carbice.html
-- Craig
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http://www.matronics.com/Navigator?Zenith-List |
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