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kearney
Joined: 20 Sep 2008
Posts: 563
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 Posted: Sun Apr 18, 2010 4:46 am Post subject: Fuel Lines |
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Hi
I am planning on installing Bonoco Inc steel braided fel lines in lieu of the soft aluminium lines spec'd by Vans. I am wondering if anyone else has done this and if so how the the fuselage passthrough to the wing was handled. It would seem that one otion is to use a bulkhead fitting at the fuselage which would make the connection to the wing vey simnple. Alternatively a single run of fuel line fom the fuel valve to the wing is also an option.
Thoughts . comments anyone?
Cheers
Les
#40643 - Systems / Wiring / Finishing
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n223rv(at)wolflakeairport
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| Posted: Sun Apr 18, 2010 6:37 am Post subject: Fuel Lines |
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I would recommend using the soft aluminum lines. A lot cheaper and last longer. In fact, you could buy the flaring tools, all fittings, and the aluminum lines cheaper than the flexible lines...
One suggestion would be to split the line from the fuel valve to the tanks into 2 lines and use a 90 degree bulkhead fitting as they pass thru the tunnel walls. Then you basically have 2 straight runs vs. 1 complex run. Just my opinion.... I can send Picts if you'd like to see how I did it.
-Mike
Sent from my iPhone
On Apr 18, 2010, at 8:45 AM, "Les Kearney" <kearney(at)shaw.ca (kearney(at)shaw.ca)> wrote:
[quote]
Hi
I am planning on installing Bonoco Inc steel braided fel lines in lieu of the soft aluminium lines spec'd by Vans. I am wondering if anyone else has done this and if so how the the fuselage passthrough to the wing was handled. It would seem that one otion is to use a bulkhead fitting at the fuselage which would make the connection to the wing vey simnple. Alternatively a single run of fuel line fom the fuel valve to the wing is also an option.
Thoughts . comments anyone?
Cheers
Les
#40643 - Systems / Wiring / Finishing
[b]
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Sun Apr 18, 2010 6:49 am Post subject: Fuel Lines |
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I think you are getting into esoterics of fuel line life. Standard
aircraft fuel lines when in wings/fuselage and not exposed to engine
temps or outside air last a very long time. I replaced one that likely
was OEM 40 yrs old last year. Yes, it was hard, no it was not anywhere
close to risk of failing, it just connected two aluminum lines
together and was a "while you are there might as well" deals.
Personally, I'd expect any fuel line inside the fuselage, protected,
to last longer than you will own/fly the aircraft. One can go to the
braided stainless lines and have very long life, or make them lifetime
by getting teflon core hoses. It becomes what your time is worth type
of exercise more than what is cheapest or more durable. If your time
is worth $10 an hour, you can make and remake a lot of soft lines. If
your time is worth $50 an hour, it becomes more of an even trade off.
On Sun, Apr 18, 2010 at 6:35 AM, Michael Kraus
<n223rv(at)wolflakeairport.net> wrote:
| Quote: | I would recommend using the soft aluminum lines. A lot cheaper and last
longer. In fact, you could buy the flaring tools, all fittings, and the
aluminum lines cheaper than the flexible lines...
One suggestion would be to split the line from the fuel valve to the tanks
into 2 lines and use a 90 degree bulkhead fitting as they pass thru the
tunnel walls. Then you basically have 2 straight runs vs. 1 complex run.
Just my opinion.... I can send Picts if you'd like to see how I did it.
-Mike
Sent from my iPhone
On Apr 18, 2010, at 8:45 AM, "Les Kearney" <kearney(at)shaw.ca> wrote:
Hi
I am planning on installing Bonoco Inc steel braided fel lines in lieu of
the soft aluminium lines spec'd by Vans. I am wondering if anyone else has
done this and if so how the the fuselage passthrough to the wing was
handled. It would seem that one otion is to use a bulkhead fitting at the
fuselage which would make the connection to the wing vey simnple.
Alternatively a single run of fuel line fom the fuel valve to the wing is
also an option.
Thoughts . comments anyone?
Cheers
Les
#40643 - Systems / Wiring / Finishing
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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
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bkbrown(at)minetfiber.com
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| Posted: Sun Apr 18, 2010 7:25 am Post subject: Fuel Lines |
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Agreed. The braided flex lines offered by Bonaco are generally Teflon lines
and I would expect would outlast the airframe.
Bob Brown
40871
Do not archive
--
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kearney
Joined: 20 Sep 2008
Posts: 563
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| Posted: Sun Apr 18, 2010 7:35 am Post subject: Fuel Lines |
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Mike
Perhaps I am being a bit anal, but I don't like soft AL lines in the cockpit. While I am sure that the are serviceable, I don't don't think they will stay intact during an accident if the cockpit was in any way deformed. My thought is that a braided steel line might be a bit more forgiving.
I have seen pix of a light a/c that was consumed by fire and it is a very sobering sight.
Cheers
Les
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Michael Kraus
Sent: April-18-10 7:35 AM
To: rv10-list(at)matronics.com
Subject: Re: Fuel Lines
I would recommend using the soft aluminum lines. A lot cheaper and last longer. In fact, you could buy the flaring tools, all fittings, and the aluminum lines cheaper than the flexible lines...
One suggestion would be to split the line from the fuel valve to the tanks into 2 lines and use a 90 degree bulkhead fitting as they pass thru the tunnel walls. Then you basically have 2 straight runs vs. 1 complex run. Just my opinion.... I can send Picts if you'd like to see how I did it.
-Mike
Sent from my iPhone
On Apr 18, 2010, at 8:45 AM, "Les Kearney" <kearney(at)shaw.ca (kearney(at)shaw.ca)> wrote:
[quote]
Hi
I am planning on installing Bonoco Inc steel braided fel lines in lieu of the soft aluminium lines spec'd by Vans. I am wondering if anyone else has done this and if so how the the fuselage passthrough to the wing was handled. It would seem that one otion is to use a bulkhead fitting at the fuselage which would make the connection to the wing vey simnple. Alternatively a single run of fuel line fom the fuel valve to the wing is also an option.
Thoughts . comments anyone?
Cheers
Les
#40643 - Systems / Wiring / Finishing
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[b]
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Phil.Perry(at)netapp.com
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| Posted: Sun Apr 18, 2010 11:43 am Post subject: Fuel Lines |
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I’ve done a complete replacement of brake lines with Bonaco. That’s including the tunnel lines and everything.
I plan on shooting a video of my routing and sharing my hose length findings for others considering a similar replacement. But it’ll be another week or two before I get a chance.
I would have shaved a few inches on the tunnel lines and 1 inch on the tunnel -> Landing gear line. The Teflon hoses will probably last longer than the airplane. Their inspection will still be inspected for condition annually.
The plan is to do the same thing for the fuel lines. Once I get all the fuel system components placed, I’ll measure for the fuel lines and get them ordered from Bonaco. I’m going to firesleeve the tunnel fuel lines while I’m at it. I am also swapping the aluminum 45 degree fitting that penetrates the firewall with a steel version.
Once I get there I’ll share the hose lengths, etc…
Phil
From: Les Kearney [mailto:kearney(at)shaw.ca]
Sent: Sunday, April 18, 2010 10:31 AM
To: rv10-list(at)matronics.com
Subject: RE: Fuel Lines
Mike
Perhaps I am being a bit anal, but I don't like soft AL lines in the cockpit. While I am sure that the are serviceable, I don't don't think they will stay intact during an accident if the cockpit was in any way deformed. My thought is that a braided steel line might be a bit more forgiving.
I have seen pix of a light a/c that was consumed by fire and it is a very sobering sight.
Cheers
Les
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Michael Kraus
Sent: April-18-10 7:35 AM
To: rv10-list(at)matronics.com
Subject: Re: Fuel Lines
I would recommend using the soft aluminum lines. A lot cheaper and last longer. In fact, you could buy the flaring tools, all fittings, and the aluminum lines cheaper than the flexible lines...
One suggestion would be to split the line from the fuel valve to the tanks into 2 lines and use a 90 degree bulkhead fitting as they pass thru the tunnel walls. Then you basically have 2 straight runs vs. 1 complex run. Just my opinion.... I can send Picts if you'd like to see how I did it.
-Mike
Sent from my iPhone
On Apr 18, 2010, at 8:45 AM, "Les Kearney" <kearney(at)shaw.ca (kearney(at)shaw.ca)> wrote:
| Quote: |
Hi
I am planning on installing Bonoco Inc steel braided fel lines in lieu of the soft aluminium lines spec'd by Vans. I am wondering if anyone else has done this and if so how the the fuselage passthrough to the wing was handled. It would seem that one otion is to use a bulkhead fitting at the fuselage which would make the connection to the wing vey simnple. Alternatively a single run of fuel line fom the fuel valve to the wing is also an option.
Thoughts . comments anyone?
Cheers
Les
#40643 - Systems / Wiring / Finishing
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012345678901234567
[quote][b]
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AirMike
Joined: 27 Feb 2007
Posts: 514
Location: Nevada
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| Posted: Sun Apr 18, 2010 10:42 pm Post subject: Bonaco Fuel Lines |
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Hands down go for the Bonaco. I futzed with those darned aluminum lines for hours and then finally ordered the Bonaco. Nice folks - good service - reasonable price. On the pass thru (to the wing) just cut a bushing in half on the band saw and snap it in around the Bonaco line. After hours of frustration, I had my fuel lines installed in something like 45 minutes. I think that they have an OSH special if you are going there.
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johngoodman
Joined: 18 Sep 2006
Posts: 530
Location: GA
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| Posted: Mon Apr 19, 2010 4:36 am Post subject: Re: Fuel Lines |
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I used a combination of the existing aluminum lines, Bonaco lines, and some braided lines I made myself. If I was doing it again, i would use nothing but Bonaco lines for the Brakes, and maybe a few homemade braided along with Bonaco for the fuel lines in the tunnel.
As far as a pass through to the wings, try these:
http://www.aircraftspruce.com/catalog/hapages/an832.php
Here are a couple of shots of my tunnel. The all blue lines are Bonaco and the ones with red are mine.
John
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pitts_pilot(at)bellsouth.
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| Posted: Mon Apr 19, 2010 1:11 pm Post subject: Fuel Lines |
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Just got back from SNF and wading through emails.
The soft aluminum lines will bend and stretch during a really bad accident before rupturing .... you won't bend or stretch as much. Flexible hoses won't stretch .... and offer a better opportunity for pulling something loose. Both typres have their advantages ..... flexible lines are great for compound routes where many bends are needed, soft aluminum is lighter, less expensive, easily bent/worked, and as long as it doesn't get repetitive bending forces lasts a long time.
Just my 2 pennies.
Linn
Les Kearney wrote: [quote] Mike
Perhaps I am being a bit anal, but I don't like soft AL lines in the cockpit. While I am sure that the are serviceable, I don't don't think they will stay intact during an accident if the cockpit was in any way deformed. My thought is that a braided steel line might be a bit more forgiving.
I have seen pix of a light a/c that was consumed by fire and it is a very sobering sight.
Cheers
Les
From: owner-rv10-list-server(at)matronics.com (owner-rv10-list-server(at)matronics.com) [mailto:owner-rv10-list-server(at)matronics.com (owner-rv10-list-server(at)matronics.com)] On Behalf Of Michael Kraus
Sent: April-18-10 7:35 AM
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Subject: Re: Fuel Lines
I would recommend using the soft aluminum lines. A lot cheaper and last longer. In fact, you could buy the flaring tools, all fittings, and the aluminum lines cheaper than the flexible lines...
One suggestion would be to split the line from the fuel valve to the tanks into 2 lines and use a 90 degree bulkhead fitting as they pass thru the tunnel walls. Then you basically have 2 straight runs vs. 1 complex run. Just my opinion.... I can send Picts if you'd like to see how I did it.
-Mike
Sent from my iPhone
On Apr 18, 2010, at 8:45 AM, "Les Kearney" <kearney(at)shaw.ca (kearney(at)shaw.ca)> wrote:
[b]
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