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David, I agree that you plan would work, however, I
must admit I am still concerned that your injectors are open with power to
them. Should not be. Injectors should only be on when triggered by
the EC2 during engine running (or cranking more than 150 rpm). I would
recommend getting to the bottom of that at some point before flying.
Believe me every little hiccup or hesitation of the engine (real or imagined)
really gets your attention as the thousand and one things you told yourself you
"should have done" flash past your minds eye {:>)
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
Sent: Sunday, February 29, 2004 1:48
PM
Subject: [FlyRotary] Re: Injectors on?
Was 13B - No start problem
Thanks Ed, I do
have fuese to the injectors, one for the lead and one for the trail. The
fuse box is in the engine compartment. It would not be the end of the
world to wire it into the panel and install a swithch, but I feel I have a
workable solution. For testing it is easy enough to pull the fuse to one
or other of the injectors. To turn off the engine I will still just turn
off the key – which controls the EC2 main power and the fuel pump. If I
need to turn the engine off sooner I will have to turn off the main battery
buss. I see the advantage of using fuel cut out to turn off the engine
as keeping the fuel out of the engine to help prevent rusting of the apex
seals. Just like in a lycoming when you go to full lean to stop the
engine.
Will let you know
what happens when I try to ‘make noise’… speaking of which…. It
off the airport J
You are correct,
David. With power to injectors via a separate connection to the
battery bus (which I also have) the way I stop the engine
is by turning off the fuel injector enable switches which kills power to the
injectors but not the EC2. That is how I found out about the "sneak"
circuit. I turned off the switch that is dedicated to providing power
to the EC2 module which should have kill the engine but the engine continued
to run!!. The other option is to kill all power to the system
through a master switch. In my case, my EC2 and injectors are wired to
the battery bus through switches. So turning off the master switch
will not stop my engine. I either turn off power to injectors via the
injector disable switches or pull the circuit breaker between the battery
and battery bus.
It would seem that
at your stage, the simplest thing might be to put a switch in the circuit
with your injector fuse (I think you said you had one) to kill power to the
injectors. That way you can ensure no power is getting to them.
Actually, its not a bad set up, you can play with your EC2 and ignition
while assured the injectors will not inject fuel and start the
engine.
Ed
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