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08-18-2013, 06:17 PM
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Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,792
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Need alum tube to plastic hose fitting
I want to install the DIY AOA that Mel Asberry has but I need the coupling that SafeAir1 recommends to connect 1/4" aluminum tubing to plastic tubing. Avery is out of stock. Anyone know who else might carry such a thing?
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08-18-2013, 06:26 PM
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Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,565
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Stein might have the coupler as well - I *think* that is where I got mine.
__________________
Brad Benson, Maplewood MN.
RV-6A N164BL, Flying since Nov 2012!
If you're not making mistakes, you're probably not making anything
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08-18-2013, 06:26 PM
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Join Date: Jan 2010
Location: Ottawa, Ks
Posts: 2,188
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Steinair?
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08-18-2013, 06:39 PM
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Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,792
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This is what I'm looking for:
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08-18-2013, 07:01 PM
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been here awhile
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Join Date: Dec 2004
Location: North Alabama
Posts: 4,300
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Quote:
Originally Posted by LettersFromFlyoverCountry
I want to install the DIY AOA that Mel Asberry has but I need the coupling that SafeAir1 recommends to connect 1/4" aluminum tubing to plastic tubing. Avery is out of stock. Anyone know who else might carry such a thing?
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Bob, cut a 3" length of hose (rubber, flexible vinyl, etc) that has the same ID as the OD of your tubing. Slip it over the aluminum and plastic hose and you have a coupling.
I've used this technique for over 20 years and it makes a reliable, airtight connection. It works so well you will probably have to cut the "coupling" if you need to disconnect the hoses...but you know how to make a new one. 
[thread moved to General Discussion so it will be in the archives]
Last edited by Sam Buchanan : 08-18-2013 at 07:05 PM.
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08-18-2013, 07:05 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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I agree with Sam. Actually all of my pitot and AOA connections are just slip-on.
Pressures are so low that it doesn't take much to seal.
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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08-18-2013, 08:05 PM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,247
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Third vote for the simple rubber tube sleeve - been doing it for decades, and never a problem.
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Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
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08-18-2013, 08:15 PM
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Join Date: Mar 2013
Location: Flathead Lake Montana - 8S1
Posts: 334
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My 31 year old LongEZ has vinyl tube couplings that are holding up perfectly. If so inclined, use a couple of small ty-wraps to cinch down lightly on the vinyl. Low weight, low cost and simple.
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'83 LongEZ - N888EZ 3,671 hours
'89 LimoEZ - N26EZ 686 hours (sold)
A couple of Glasairs and a Lancair 320...
Next: a RV14 need something to build
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08-19-2013, 02:42 AM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Quote:
Originally Posted by deek
My 31 year old LongEZ has vinyl tube couplings that are holding up perfectly. If so inclined, use a couple of small ty-wraps to cinch down lightly on the vinyl. Low weight, low cost and simple.
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Easier than tyraps, just slide a slightly undersize O-ring over the tube at each slip joint.
It will exert an even pressure around the plastic tube circumference unlike a tyrap.
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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08-19-2013, 07:59 AM
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Join Date: Sep 2012
Location: Prairieville, LA
Posts: 221
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Don't Beat Me Up
Vinyl tubing....any special kind?
Get it from?
A couple of inches each way?
The kit I bought has "hard pipe" static run to the cockpit area.
First time I have seen that, it's alum tube...1/4" OS dia.
It is not Van's static kit. The two ports, on the outside skin are about
silver dollar size with four rivets each.
The tee for the ports only sits about 2" above the ports.
Sure would like to convert to plastic to make all the connections easier
All comments and direction greatly appreciated.
__________________
Bert
RV-9A ?Pearl?
Working on Instrument ticket
Donation Done for 2020
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