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Why not use aluminum for direct port -3AN?

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Old 12-23-2005, 04:45 PM
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Default Why not use aluminum for direct port -3AN?

Stainless is a PITA. Looks good...but a bit of a pain. And I know we use some thick walled -3An aluminum tube for pressures as much as 3000 psi that are certified to be used on aircraft...and its a snap to bend up and flare. Seals better too. Why does no one use aluminum tubeing?
I can see maybe if the tubing has to support the noids and maybe rails. But if that stuff is mounted...I dont see why not.

Any thoughts?
Old 12-23-2005, 05:04 PM
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hmmm, never tried it. as long as the some support I think you would be good to go... How much a foot may be the problem..
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Old 12-23-2005, 05:23 PM
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Originally Posted by 383LQ4SS
Stainless is a PITA. Looks good...but a bit of a pain. And I know we use some thick walled -3An aluminum tube for pressures as much as 3000 psi that are certified to be used on aircraft...and its a snap to bend up and flare. Seals better too. Why does no one use aluminum tubeing?
I can see maybe if the tubing has to support the noids and maybe rails. But if that stuff is mounted...I dont see why not.

Any thoughts?
Yeah how expensive is it???
Old 12-23-2005, 05:27 PM
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similair to stainless
Old 12-23-2005, 05:34 PM
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Good question... Its already used in nitrous filters etc, so why not tubing? If I ever go direct port Ill tube it up using aluminum.
Old 12-23-2005, 09:15 PM
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its not as pretty and shiny...thats for sure. You can polish it but then you need to keep polishing it....lol. Screw that. But yeah...bending one up with aluminum would be a snap! I may do my next one like that.
Old 12-23-2005, 10:01 PM
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why not go with some parker plastic tubing similar to the nossle kit? then there's no bending involved.

http://www.parker.com/EAD/displayCat...&sMode=Details

uses an industry standard compression fitting, and is relatively in-expensive. a few bucks a foot and you'll probably only need a few feet.
Old 12-23-2005, 11:48 PM
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why not use brake line tubing?
Old 12-24-2005, 11:27 AM
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Here can you get the -3 aluminum tubing? I assume since its thicker you would need different b-nuts and sleeves?
Phil
Old 12-24-2005, 11:49 AM
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I'm going to guess that the microstructure and fatigue properties of aluminum alloys in a tube are different from stainless or other steel products. I'll wager that certain alloys may work very well for different applications such as canisters. These same alloys may not be as suitable for small diameter tubes etc. Just a guess; nevertheless, a direction to be considered.
- Macon
Old 12-24-2005, 12:06 PM
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We have already designed systems to work with the plastic type tubing and have quick disconnect fittins on the jet holders. We use it for the 3rd system and underneath the manafold systems. Where its have to plumb with SS lines.
Old 12-24-2005, 01:15 PM
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Originally Posted by N20GMC
We have already designed systems to work with the plastic type tubing and have quick disconnect fittins on the jet holders. We use it for the 3rd system and underneath the manafold systems. Where its have to plumb with SS lines.
I use poly tubbing on my Harley, and may use it on a DP for the Z06. We use this in the Maritime trade a lot, good stuff, if using good fittings. I think the aluim has a fatigue rate that's not so compatible with vibration?
Robert
Old 12-24-2005, 02:23 PM
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i work in the aircraft industry also and was thinking the same thing the other day...we mandral bend titanium for the v-22 osprey now and was thinking about using some of that material that we have left over.
Old 12-24-2005, 08:20 PM
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Originally Posted by ronan
i work in the aircraft industry also and was thinking the same thing the other day...we mandral bend titanium for the v-22 osprey now and was thinking about using some of that material that we have left over.
When I read the question earlier today, I immediately thought of why it took so long to use a strong metal like titanium in a hand gun. Like the aluminum tubing idea here, the correct alloys simply didn't exist until fairly recently. I think it's a matter of best use for a particular metal alloy or plastic compound (as Robert mentioned).




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