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Fuel line size

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dalemed

Joined: 25 Dec 2007
Posts: 46

Posted: Wed Jun 02, 2010 2:49 pm Post subject: Fuel line size

I've decided to replace the rubber hose fuel line from the tank with 3/8" aluminum line.  I've got 2 questions - should I use 6061-T6 Aluminum line and what wall thickness should I use?  Aircraft Spruce sells 4 different wall thicknesses for 3/8" OD line - .035, .058, .065 and .083.



It seems to me any of these should give me adequate fuel flow for a Jabiru 3300.  The other issue might be strength, but I should be able to support it well enough.



Thanks for any advice.

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_________________
Dale
Zenith Zodiac CH650

Tim Juhl

Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan

Posted: Wed Jun 02, 2010 4:54 pm Post subject: Re: Fuel line size

I'm not flying yet but I chose to go with 3/8 " 3003-0 versatube which has a wall thickness of 0.035 and a working pressure of 520 psi.  The versatube is fairly easy to make bends and curves in without kinking.  I plan to use aeroquip hoses at points subject to flex or excessive vibration.



Tim

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_________________
______________
CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Almost done! It'll fly in spring!

Terry Phillips

Joined: 11 Jan 2006
Posts: 346
Location: Corvallis, MT

Posted: Wed Jun 02, 2010 9:24 pm Post subject: Fuel line size

Hi Dale



I made the same decision.



I recommend that you check out Tony Bingellis' article, "About Aircraft 

Plumbing," in his book Firewall Forward. You might be able to find the 

article for free on the EAA website. A lot of his articles are published 

there for members. Bngellis recommended 5052-1. 6061 is stiffer. The 

article has a lot of info about fittings, design, etc. It is a good primer.



Terry

At 03:49 PM 6/2/2010 -0700, Dale wrote:

 	  Quote: 	
		  I've decided to replace the rubber hose fuel line from the tank with 3/8" 

aluminum line.  I've got 2 questions - should I use 6061-T6 Aluminum line 

and what wall thickness should I use?  Aircraft Spruce sells 4 different 

wall thicknesses for 3/8" OD line - .035, .058, .065 and .083.



It seems to me any of these should give me adequate fuel flow for a Jabiru 

3300.  The other issue might be strength, but I should be able to support 

it well enough.



Thanks for any advice.


	




Terry Phillips

ttp44~at~rkymtn.net

Corvallis MT

ZU-601XL/Jab 3300 s .. l .. o .. o .. w build kit - Tail & flaps are done;

Upgrading wings & ailerons per the AMD Safety Directive

http://www.mykitlog.com/N47TP/

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_________________
Terry Phillips
Corvallis, MT
ttp44<at>rkymtn.net
Zenith 601XL/Jab 3300 slow build kit - Tail feathers done; working on the wings.

bryanmmartin

Joined: 10 Jan 2006
Posts: 1018

Posted: Wed Jun 02, 2010 9:38 pm Post subject: Fuel line size

I used 3003-0 versatube for my fuel lines. It's very easy to work with and bend to shape. It's also a lot cheaper to ship as it is formed into a coil and shipped in a relatively small package. 6061 tubing is more for structural purposes, it's much stiffer and harder to shape.

On Jun 2, 2010, at 6:49 PM, dalemed wrote:



 	  Quote: 	
		   

 

 I've decided to replace the rubber hose fuel line from the tank with 3/8" aluminum line.  I've got 2 questions - should I use 6061-T6 Aluminum line and what wall thickness should I use?  Aircraft Spruce sells 4 different wall thicknesses for 3/8" OD line - .035, .058, .065 and .083.

 

 It seems to me any of these should give me adequate fuel flow for a Jabiru 3300.  The other issue might be strength, but I should be able to support it well enough.

 


	


-- 

Bryan Martin

N61BM, CH 601 XL,

RAM Subaru, Stratus redrive.

do not archive.

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_________________
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive.

Geoff Heap

Joined: 12 Jan 2006
Posts: 266
Location: Lindenwold, New Jersey

Posted: Thu Jun 03, 2010 4:22 am Post subject: Re: Fuel line size

I bought a roll of 3003 and several pre cut 6' sections of 5052. I much prefer the 5052. I had no success trying to unroll 3003 to straight. It looked awful. I gave it away to a fellow builder. However, the 5052 is soft enough to work with and has no bends in it except the ones I put there. Shipping cost is a little more but not by much if you go 6' max. I had no runs where I needed more than 6'...Geoff

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bill.pagan(at)yahoo.com
Guest

Posted: Thu Jun 03, 2010 5:07 am Post subject: Fuel line size

Just a reminder to all using AN fittings on the aluminum and braided fuel lines that they require a 37 degree flare (and thus an aviation flaring tool) and not a standard 45 degree flare as on automobiles.

 

 

Bill Pagán 



 

   From: Geoff Heap <stol10(at)comcast.net>

To: zenith601-list(at)matronics.com

Sent: Thu, June 3, 2010 8:22:48 AM

Subject: Re: Fuel line size



--> Zenith601-List message posted by: "Geoff Heap" <stol10(at)comcast.net (stol10(at)comcast.net)>



I bought a roll of 3003 and several pre cut 6' sections of 5052. I much prefer the 5052. I had no success trying to unroll 3003 to straight. It looked awful. I gave it away to a fellow builder. However, the 5052 is soft enough to work with and has no bends in it except the ones I put there. Shipping cost is a little more but not by much if you go 6' max. I had no runs where I needed more than 6'...Geoff





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dalemed

Joined: 25 Dec 2007
Posts: 46

Posted: Thu Jun 03, 2010 5:48 am Post subject: Re: Fuel line size

Thanks everybody Great advice!

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Dale
Zenith Zodiac CH650

Tim Juhl

Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan

Posted: Thu Jun 03, 2010 6:55 am Post subject: Re: Fuel line size

If you are an EAA member or know someone who is, there is a nice article in this months Sport Aviation on choosing and fabricating aluminum fuel lines.  Check it out!



Tim Juhl

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_________________
______________
CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Almost done! It'll fly in spring!

Afterfxllc(at)aol.com
Guest

Posted: Thu Jun 03, 2010 7:04 am Post subject: Fuel line size

Dale

  

 Call Van's aircraft and order their 3/8 tubing it iust seems to be  easier to work with and then you know you are getting the right stuff. But if  you have to get it from Spruce this is the stuff you want.

 http://www.aircraftspruce.com/catalog/mepages/3003versatube.php

  

 Jeff

  

  In a message dated 6/2/2010 6:50:42 P.M. Eastern Daylight Time,  dalemed(at)gmail.com writes:

  	  Quote: 	
		  -->    Zenith601-List message posted by: "dalemed"    <dalemed(at)gmail.com>



I've decided to replace the rubber hose fuel    line from the tank with 3/8" aluminum line.  I've got 2 questions -    should I use 6061-T6 Aluminum line and what wall thickness should I use?     Aircraft Spruce sells 4 different wall thicknesses for 3/8" OD line - .035,    .058, .065 and .083.



It seems to me any of these should give me    adequate fuel flow for a Jabiru 3300.  The other issue might be strength,    but I should be able to support it well enough.



Thanks for any    advice.



--------

Dale

Flying Cessna 170B

Building Zenith    CH650





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