L320 Wing Tank Fuel Line Fittings

Submitted by Anonymous on

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From: Donald Gordon <BlueSkyComputer [at] compuserve.com>
Sender: Donald Gordon <BlueSkyComputer [at] compuserve.com>
Subject: L320 Wing Tank Fuel Line Fittings
Date: Thu, 3 Sep 1998 20:40:50 -0400
To: Lancair Mail List <lancair.list [at] olsusa.com>

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I'm trying to find some fittings for wing tanks on my L320.  I'm burning

directly out of my wing tanks using 3/8 tubing.  I have threaded inserts in

the BL50 ribs where the standard brass fuel finger strainer screws into the

tank.  I need a fitting that will screw into the finger strainer in the

outboard wing panel, pentrate the BL50 rib, and make a 90 degree turn to

parallel the BL50 rib.



I'm looking for a recommendation for a fitting.  Note that a standard 90

degree elbow is not long enough to clear the BL50 rib.  An AN916 elbow with

AN911 pipe thread is too long, it will hit the Landing Gear Leg.  I need

something inbetween.



Any suggestions are appreciated.





Don Gordon

L320 Wing Tank Fuel Line Fittings

Submitted by Anonymous on

From: John Cooper <heyduke [at] digital.net>
Subject: L320 Wing Tank Fuel Line Fittings
Date: Thu, 03 Sep 1998 23:09:50 -0400
To: <lancair.list [at] olsusa.com>
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Parker-Hannifin makes a "long" elbow that might work. Contact your local

hydraulic hose shop for a catalog. You know, the guys that make up

hydraulic hoses for tractors and stuff.



On my 235, I screwed an AN-823-6D into the outboard wing aluminum piece

(which I  had to drill out and tap for 3/8"NPT). The 45degree fitting was

oriented "up", and  I cut out a hole in the BL-50 rib to allow clearance.



On the end of the 3/8" soft aluminum tubing I placed a 90deg bend as tight

as I could make it. So when it is all hooked up, the gas flows up through

the 45degree fitting, then turns aft to the rear spar where another 90

degree bend takes it inboard all the way to the center console. I epoxied a

3/8" bulkhead fitting where the rear spar meets the console on each side

(not enough room for a jamb nut), then went forward from there, right along

the belly pan and underneath the front spar. My transfer pumps are mounted

on the back of the nose gear tunnel.



Some people prefer to run the gas line along the forward spar, but I felt

that having it run right along underneath my a** was the safest place in

the plane <G>.



--John