a simple clear piece of tubing visible from the cockpit on the way to the header tank is all that is needed. Mine is on both side of the center console, I can also hear my pumps when they start sucking air, but the air in the lines is visible as they run dry.
-----Original Message-----
From: Greenbacks, UnLtd. <N4ZQ@VERIZON.NET>
To: Lancair Mailing List <lml@lancaironline.net>
Sent: Mon, Apr 29, 2013 6:37 am
Subject: [LML] Re: Recent flight
Yesterday's flight from KBVY to KEFK on the Canadian border and back provided a
good opportunity
to experience lean of peak performance for the first time. About 80ยบ lean of
peak is where roughness
became noticeable. With fuel flows jumping around due to ongoing electrical
issue(probable), it's not at all certain
what the correct flow rate was but it was bouncing around in the 6-9gal range at
8500ft. Several weeks ago I
installed an LED indicator in the panel to let me know when the auto fuel system
relay was energized since I wanted
to be absolutely sure fuel wasn't being pumped overboard at the high level, it
wasn't. This flight was also the first
time I ran the wing tanks dry. Since I could not hear the transfer pumps in
normal operation, I was hoping to hear them when running dry but I could not.
I'm thinking that an optical sensor in each fuel transfer line might be useful
to know for sure the tanks are empty so the auto transfer system can be
deactivated so as to not have the pumps running dry.
Angier Ames
N4ZQ
25hrs and beyond Phase I
--
For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html