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You of course are totally correct Tracy. Anyone who
signs up to build their own airplane, and to power it with an engine that is not
what the designer recommended has to be willing to accept complete
responsibility for all installation and integration issues. Even if they buy
hardware from a third party such as you.
Say what you want about standard aircraft engines, but
at least the installation requirements are well known. I doubt there are any two
rotary installations that are identical. We are on the bleeding
edge.
In my install I remote mounted the switches from the
control panel. I did this for a number of reasons, one of which is I chose to
use MS switches which are larger, much more robust, and have a much stiffer snap
action when toggling. They are harder to accidentally switch but I have still
had a couple of occasions where I've accidentally toggled the A - B controller
selector while climbing in or out of the airplane. Like I said in my previous,
I'm considering removing the cold start switch since I've never had a need to
use it. Personal choice.
Can you give a little more detail about where that nut
that shorted out the EC2 came from? Was it one of the nuts that secures the pcb
to the case lid?
Mike Wills
Sent: Sunday, March 14, 2010 7:10 AM
Subject: [FlyRotary] Re: Ut-Oh...
I know Dave or Jon wouldn't phrase it this way but I've already
received a number of messages from others about these two recent in-flight power
failures due to EC2 issues.
Jon's was due to a loose mounting nut
inside the EC2 that shorted the main power input filter to ground and burned
open both foils from the 2 power input pins. How lucky was that.
Anyway, at the risk of sounding defensive, I thought I'd share my
response to one of them that suggested changing the EC2 case to an external
mount of some sort. I'm sure there are scores of messages on the way
urging me to place switch guards on the cold start switch :
)
REPLY
Hello ----------
I'm aware of the failure and
have the unit here for repair.
Like a thousand other
critical details in building an aircraft, it is not possible to explicitly spell
out all of them. The precise method and hardware used to accomplish it are
not part of the EC2 or the instructions. The first paragraph of the installation
guide does say the following:
"Needless to say,
the quality of installation is just as important as the quality of the hardware
itself. It is not practical to include a course on proper
electrical wiring practices in these installation instructions, but it is
imperative that proper wiring techniques be employed during the installation of
the EC2."
It was my thought that avoiding the presence of loose metal
objects inside an electrical device that your life depends on fell into the
category of "needless to say".
Nevertheless, a cautionary note
might well be worth adding. As also stated in the first paragraph of
the instructions,
" I want your project to
succeed and your life to be a long and happy one. "
All the best,
Tracy Crook, RWS
On Sun, Mar 14, 2010 at 2:34 AM, David Leonard <wdleonard@gmail.com> wrote:
Boy, word sure gets around these days..
short answer... inadvertently hit cold start switch while messing with
GPS and flying at 1000' AGL.. not enough time to troubleshoot...
had to fly plane and find a place to land.
Both happy and appalled when
the I realized the problem 2 minutes after the commotion stopped. The
tower must have been plain appalled when I took off again later this
afternoon.
--
David Leonard
Turbo Rotary
RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
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