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Mate aluminum ram air pressure tube to poly

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sarg314(at)comcast.net
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Posted: Mon Aug 25, 2008 9:30 am Post subject: Mate aluminum ram air pressure tube to poly

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sarg314(at)comcast.net
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Posted: Mon Aug 25, 2008 7:08 pm Post subject: Mate aluminum ram air pressure tube to poly

I'll try this again since my text got clobbered last time:



I have a 1/4" O.D. aluminum tube coming out of my wing from the pitot 

tube which has to some how get mated to a 1/4" poly tube that goes to 

the air speed indicator.  What is a good way to do this? Van's says just 

butt the two tubes together with a length of plastic tube with a 1/4" 

I.D. slipped over it.  That doesn't sound very reliable.



Will those nylo-seal fittings grip the aluminum tube well enough to be 

useful?



--

Tom S., RV-6A

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dsvs(at)ca.rr.com
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Posted: Mon Aug 25, 2008 7:40 pm Post subject: Mate aluminum ram air pressure tube to poly

Tom,

The simple way is to do as Van's says to do.  Dan C did it that way.  An

other slternative is to flair the al tube ahd use an AN fitting that has a

flair on one end and pipe threads on the other.  Mate this to a nylo seal

female pipe fitting and you are all set.  Don VS

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sarg314(at)comcast.net
Guest

Posted: Mon Aug 25, 2008 8:10 pm Post subject: Mate aluminum ram air pressure tube to poly

Don:

	As luck would have it I found some 1/4" I.D. tygon tube on my 

random-parts shelf and tried it.  It grips the aluminum aggresively, so 

yes, it looks like it will work better than I expected.



	Along these same lines, I just ordered some nylo-seal fittings and 1/4" 

tube to hook up my airspeed, altimeter and VSI.  Is that what folks 

usually use for this purpose?

Don Vs wrote:

[quote] 

 

 

 Tom,

 The simple way is to do as Van's says to do.  Dan C did it that way.  An

 other slternative is to flair the al tube ahd use an AN fitting that has a

 flair on one end and pipe threads on the other.  Mate this to a nylo seal

 female pipe fitting and you are all set.  Don VS

 --

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dsvs(at)ca.rr.com
Guest

Posted: Mon Aug 25, 2008 8:26 pm Post subject: Mate aluminum ram air pressure tube to poly

Yes but you always need to use the inserts to get a good seal.



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msausen

Joined: 25 Oct 2007
Posts: 559
Location: Appleton, WI USA

Posted: Tue Aug 26, 2008 5:40 am Post subject: Mate aluminum ram air pressure tube to poly

You could also use the quick connects from the likes of Stein or SafeAir that are basically commercial air line versions of the plumbing quick connects from your local Lowes Depot.



Michael Sausen

RV-10 #352 Fuselage



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sbuc(at)hiwaay.net
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Posted: Tue Aug 26, 2008 6:09 am Post subject: Mate aluminum ram air pressure tube to poly

tom sargent wrote:

 	  Quote: 	
		   

 

 I'll try this again since my text got clobbered last time:

 

 I have a 1/4" O.D. aluminum tube coming out of my wing from the pitot 

 tube which has to some how get mated to a 1/4" poly tube that goes to 

 the air speed indicator.  What is a good way to do this? Van's says just 

 butt the two tubes together with a length of plastic tube with a 1/4" 

 I.D. slipped over it.  That doesn't sound very reliable.


	




Tom, Vans knows of what they speak.  



Connecting the tubing with a short length of plastic tubing works very 

well and has performed perfectly on my RV-6 for the past nine years.



Sam Buchanan

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