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jeffrey_davidson(at)earth
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 Posted: Mon Sep 08, 2008 5:52 pm Post subject: air plenum tube to direct air to the electronic ignition mod |
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I'm at the point where I'm working on the fiberglass air plenums around the cylinders. I have half in round 6061-T6 to make the tubes. How in the world do I bend the tubes as pictured on the JabiruUSA web site? All the tube benders I can find only bend up to 3 eights inch tubing.
Jeff Davidson
601HD/3300A - doing the second 90 percent!
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craig(at)craigandjean.com
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| Posted: Mon Sep 08, 2008 6:21 pm Post subject: air plenum tube to direct air to the electronic ignition mod |
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Pack them full of sand, plug the ends with corks or duct tape and bend them around a block of wood with a somewhat smaller radius then the target radius to allow for spring-back. Leave the tubes long during bending to give yourself something to grasp and then cut to length. The sand keeps them from collapsing.
-- Craig
From: owner-jabiruengine-list-server(at)matronics.com [mailto:owner-jabiruengine-list-server(at)matronics.com] On Behalf Of Jeff
Sent: Monday, September 08, 2008 7:52 PM
To: jabiruengine-list(at)matronics.com
Subject: air plenum tube to direct air to the electronic ignition modules
I'm at the point where I'm working on the fiberglass air plenums around the cylinders. I have half in round 6061-T6 to make the tubes. How in the world do I bend the tubes as pictured on the JabiruUSA web site? All the tube benders I can find only bend up to 3 eights inch tubing.
Jeff Davidson
601HD/3300A - doing the second 90 percent!
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mark(at)flylightning.net
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| Posted: Tue Sep 09, 2008 4:14 am Post subject: air plenum tube to direct air to the electronic ignition mod |
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Jeff,
An option to tubing is 1/2" blue line cold water pipe available from the aircraft parts department in your local Lowes, Home Depot, Ace etc. You only need about 2' along with one 90, one 45 degree fitting and some five minute epoxy. Use a short piece of pipe, the 45 and then a longer piece to blast air on the right side coil (1,3,5) and then a very short piece, 90 and another short piece to blast air on the left coil (2,4,6). Use the 5 minute epoxy to glue it all in. Don't forget to sand all surfaces before gluing them in.
This is what we use on all of our installations.
If you'd like a picture please e-mail me off-line.
Best regards,
Mark
Mark Stauffer
Production Manager
Arion Aircraft
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