<<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
>>
I have been leak-testing the tanks on my ES (5 bays, 45 gallons).  The setup
I use includes a precision absolute pressure gage and a thermocouple to
measure temperature.  I locate the thermocouple inside the leading edge
close to the forward spar.  I pressurize the tank to 50mm (about 1 psi) over
atmosphere and use a soap solution to check all the openings.  Then, using a
temperature correction, read the pressure over time, usually overnight.  To
tape over the fuel gage and filler openings I use aluminum-backed tape that
seems to be non-porous.

Both tanks behave similarly.  Converting the pressure measurements to volume
I get 15 to 30 cu. in. per hour leakage.  So far I haven't started to search
out leaks.  Any ideas?  Would this considered to be normal?

Gary Casey
ES project


>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
LML website:   http://members.olsusa.com/mkaye/maillist.html
LML Builders' Bookstore:   http://www.buildersbooks.com/lancair
Please remember that purchases from the Builders' Bookstore
assist with the management of the LML.

Please send your photos and drawings to marvkaye@olsusa.com.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>