Wolfgang,
My first email was short
because I did not know if you would get it or not. Thanks for the reply.
People like you keep dummies like me flying.
Here is my
situation:
Lancair N320RS first flew Feb
1 2010. Now at 82 hrs. Pressure gauges on gear up and gear down. Pressures
always high at about 1500 and 1000 psi. Often after sitting a few days pump
would run as soon as master was activated. Pump would go clack- clack- clack
from one to many times then stop. Very noisy never smooth like pumps I have
used in industry before. I asked a mechanic to look at it and he said it was
fine (don’t think so). Original pump, exact model unknown but kit was started
in 1988! Yes that is correct, long story, moves, slow work, money,
etc.
Have had some problems with
micro monitor after takeoff and now suspect the hydraulic pump as in Scott
Krueger’s article that is at http://www.mail-archive.com/lancair.list@olsusa.com/msg09420.html
On last flight, lost micro
monitor and took long time to get transition light off. Was first time in cold
flying, normally fly out of Houston, moved to Colorado. On landing green
lights were slow to come on. Let set for a couple of weeks, pressure gauges
both read zero, master on and pump runs real smooth and quiet but does not
build pressure. I had to leave for Houston and did not get to check any
further. Now in Houston, returning to Colorado next week and looking for
answers. Only previous gear problem was at 2 hrs TT one gear retract cylinder
failed in the down position, threaded end bent at the end of the threads and
broke off, shaft bend in a bow and ruined, found during preflight and no
problem, gear would not have retracted on take off.
I liked your article and never
did like the one pressure point activation. Your module sounds good even if
just for a better system.
What do you
think?
Roy
Space
From: Wolfgang
[mailto:Wolfgang@MiCom.net]
Sent: Wednesday, February 09, 2011 4:43
PM
To: Roy Space
Subject: Re: Lancair 320/360 hydraulic
system questions and fixes
Which problem is
that ? I'm not sure I understand your question.
I have developed a
module to address the overpressure malfunction in the 320/360 hydraulic system
if that's what you mean.
If you're refering
to the "noise" caused by switch contacts going bad, that's a simple one as I
indicated on the list.
----- Original
Message -----
Sent: Wednesday,
February 09, 2011 5:27 PM
Subject: Lancair 320/360
hydraulic system questions and fixes
I have the same problem. Did you ever make the electrical
fix?
I am interested.
Roy Space
N320RS