REFLECTOR: Fuel Leak Techniques?

nmflyer1 at aol.com nmflyer1 at aol.com
Sat Feb 10 19:34:56 CST 2007


Craig, 
 
It sounds like you know where the leak is, but can't seem to seal it?  Is it leaking in between the skins and transferring or is it an obvious but frustrating spot? 
 
I was worried about that very thing where my fuel guages are located. So during construction I drilled the hole for the guages (both sight and capacitive). Then I hollowed out an area almost an inch more between the skins and packed the area with Microglass and Jeffco. Then sanded it flush, finally resealing it with 2 layers of Jeffco before installing the guages. So far mine passes the air test as well, but Im still a bit away from adding fuel. 
 
Kurt 
 
 
-----Original Message-----
From: cdwoolston at sbcglobal.net
To: reflector at tvbf.org
Sent: Sat, 10 Feb 2007 5:08 PM
Subject: REFLECTOR: Fuel Leak Techniques?


Okay collective wisdom of the reflector, John and I are at our wits end.  We can’t seem to fix a fuel leak in one of our tanks.  Wanted to solicit any other techniques we haven’t thought of yet.  What’s been particularly tough about this leak is that it doesn’t appear to leak on the ground; only after flying will it show a stain streak.  It also is such a small leak that it will hold air pressure day after day with no appreciable leak down.  The other very odd trait is where the leak stain shows up and that is just above the landing gear where it comes out of the fuselage.  This is a fix gear XL if you don’t remember, that passed leak checks years ago, flew at least 15 hours before this showed up and now we just can’t seem to nail this down.
 
Thanks in advance,
 
Craig
XL-5FG Flying in Palmdale,CA
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