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Subject: Re: Recent flight
From: "Greenbacks, UnLtd." <N4ZQ@VERIZON.NET>
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Date: Mon, 29 Apr 2013 08:36:11 -0400
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To: "Lancair Mailing List" <lml@lancaironline.net>

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 80=BA =
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=