Scott writes:

>In any event, I have tried to get Lancair to alter their wiring diagram
for
>years, but to no avail.  The safest way to wire your electraulic system
is to
>wire the relay power breaker, fuse or inline fuse after the motor power

>breaker.  This way, when the motor breaker is pulled, all the power is
taken
>off the complete system.  

Scott,

I gave this a lot of thought while building and concluded(after frying
one relay in testing) that their diagram might be the safest alternative
(even with the potential to burn up relays).  I decided that with main
pump power coming straight from the battery, it was wise to leave
control power switched.  This motivation was to prevent an accidental
gear up on the hangar floor from the gear system still being powered
with the master switch off.  I guess the final perfect fix has a
separate relay and or big amp switch for the whole system? Anyway you
see why I would arrive at the conclusion to leave it alone.  Save a
switch, relay, save a lot of wire, gain a 1/4 kt in weight savings, and
save a few brain cells (the last of which were spent wiring my Control
stick Koolie hat dual axis trim relays).  As it stands in my plane
control power can be turned off after pulling the 50 amp breaker(thus
saving the relay) by selecting my Essential bus and turning off the Main
bus.  Adding a little detail clarifying the pros and cons of this action
in my abnormal checklists would be prudent.

On the other topic of the "In-Use" light having high amperage dangers.
I agree totally. I'll now have to add my third inline fuse to my
electrical system.  Thanks for the heads up!

In my copy of Websters electraulic is not a word.  Therefore, it will
have to remain a fine sniglet for the time being.  Keep the pressure on,
I hear they make changes every year.


Larry Henney
N360LH