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Copper Tubing For Replacement Air Line??? Call Doug!!!

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rvfltd(at)televar.com
Guest

Posted: Mon Feb 12, 2007 8:51 am Post subject: Copper Tubing For Replacement Air Line??? Call Doug!!!

Guys I have two never flown aircraft which were damaged in a trucking accident, I can easily strip some tubing out of them, how much do you need.  Or on the other hand you could try to export it out of china if you want to wait 90 days.  

 Always Yakin,

 Doug

 Don Milbourn wrote:

 [quote]             I have a frend in china ,he also owns a yak. I will check with him.

   Don Milbourn 

   [quote]     ----- Original Message ----- 

     From:     ggg6(at)att.net (ggg6(at)att.net)     

     To:     yak-list(at)matronics.com (yak-list(at)matronics.com) 

     Sent: Monday, February 12, 2007 7:52 AM

     Subject: Re: Re: Copper Tubing For Replacement Air Line???

Gentlemen,  does anyone have a connection in China for the Alumimun Tubing,, they gladly export most everything?        

Gary Gabbard       CJ  N22YK

          [quote]-------------- Original message from "A. Dennis Savarese" <dsavarese(at)elmore.rr.com (dsavarese(at)elmore.rr.com)>: -------------- 

 > --> Yak-List message posted by: "A. Dennis Savarese" 

 > 

 > Please help us locate a source for acceptable 6 mm and 8 mm aluminum tubing. 

 > I personally would appreciate it very much. 

 > Dennis 

 > 

 > ---

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fish(at)aviation-tech.com
Guest

Posted: Mon Feb 12, 2007 9:39 am Post subject: Copper Tubing For Replacement Air Line??? Call Doug!!!

Group,

If I remember correctly, I had a damaged air line on my Yak. 

I cut the tubing past the russian fittings, placed an an fiting on the line

and flaired it. Did the same on the other end and used a union to connect them.

If I remenber correct, the russian flair is similiar to the US flair and there

is a line similiar enough to work. I beleive that I looked a making a new line

using the russian fittings and US flair, but it would take longer to make the

new line then splicing the old one.

Laterrrr

John Fischer

Yak-52, N213YA

[quote]

Guys I have two never flown aircraft which were damaged in a trucking 

accident, I can easily strip some tubing out of them, how much do you 

need.  Or on the other hand you could try to export it out of china if 

you want to wait 90 days. 

Always Yakin,

Doug

Don Milbourn wrote:

> I have a frend in china ,he also owns a yak. I will check with him.

>  

> Don Milbourn 

>

>     ---

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wlannon(at)cablerocket.co
Guest

Posted: Mon Feb 12, 2007 8:40 pm Post subject: Copper Tubing For Replacement Air Line??? Call Doug!!!

My 2 cents worth on the tubing question;



While copper was in fairly common use on aircraft in years gone by it is not 

the best choice. As already pointed out it hardens over time and becomes 

critical under vibration.

The correct material is 5052 aircraft tubing available from any aircraft 

parts supplier.

The Chinese and Russian tubing is the same material and , in the 6 & 8 mm 

dia. has a wall thickness of 1 mm (0.0394")



The 8mm dia. can be directly replaced with 5/16" 5052 using the metric nut 

and sleeve with no modification. Outer dia. is 0.0015" less. The standard 

wall thickness of  0.035" may be adequate but I use (and recommend) 0.049" 

to guarantee equivalent or better strength.



The 6mm dia. can be replaced by 1/4" 5052 and the 0.035" wall thickness is 

adequate in this dia.

To use the metric fittings the sleeve is replaced by the standard AN unit 

( I forget the P/N) and the nut is modified by boring out to accept the AN 

sleeve. This is easily done with an appropriate single flute step drill, 

just be sure to make a small chamfer on the inside edge to avoid damage to 

the sleeve.



A standard (Aircraft  NOT Automotive) flaring tool is fine giving an 

included angle of 75deg compared to the Russian/Chinese standard of 74deg.



Do not use the alum. alloy tubing available in coils. This is 3003 material 

and the strength is not adequate. It's aircraft use is (or should be) 

limited to vent and static lines only.



Cheers;

Walt



---

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KingCJ6(at)aol.com
Guest

Posted: Mon Feb 12, 2007 8:53 pm Post subject: Copper Tubing For Replacement Air Line??? Call Doug!!!

Walt - thanks for this, and other Yak List posters continued  informative and unique insights into our world of a/c maintenance &  safety.  Priceless and much appreciated information.

  

 Dave   

  

 In a message dated 2/12/2007 8:41:55 PM Pacific Standard Time,  wlannon(at)cablerocket.com writes:

  	  Quote: 	
		  -->    Yak-List message posted by: "Walter Lannon"    <wlannon(at)cablerocket.com>



My 2 cents worth on the tubing    question;



While copper was in fairly common use on aircraft in years    gone by it is not 

the best choice. As already pointed out it hardens over     time and becomes 

critical under vibration.

The correct material is 5052    aircraft tubing available from any aircraft 

parts supplier.

The Chinese    and Russian tubing is the same material and , in the 6 & 8 mm 

dia. has    a wall thickness of 1 mm (0.0394")



The 8mm dia. can be directly    replaced with 5/16" 5052 using the metric nut 

and sleeve with no    modification. Outer dia. is 0.0015" less. The standard 

wall thickness    of  0.035" may be adequate but I use (and recommend) 0.049" 

to    guarantee equivalent or better strength.



The 6mm dia. can be replaced    by 1/4" 5052 and the 0.035" wall thickness is 

adequate in this dia.

To    use the metric fittings the sleeve is replaced by the standard AN unit 

( I    forget the P/N) and the nut is modified by boring out to accept the AN    

sleeve. This is easily done with an appropriate single flute step drill,    

just be sure to make a small chamfer on the inside edge to avoid damage to    

the sleeve.



A standard (Aircraft  NOT Automotive) flaring tool    is fine giving an 

included angle of 75deg compared to the Russian/Chinese    standard of 74deg.



Do not use the alum. alloy tubing available in    coils. This is 3003 material 

and the strength is not adequate. It's    aircraft use is (or should be) 

limited to vent and static lines    only.



Cheers;

Walt 	


 

  

  [quote][b]

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