----- Original Message -----
Tracy,
what was this talk (some time ago on the other list, .....I get the
essential stuff, but delayed...) that your EC2 is not compatible with a C/S
prop?
That it does not work on a dyno?
Would you please care to clear up the "smoke"....
How far is your EC2 from a true FADEC (or whatever Mistral is calling there
system)
You are already trying the Fly-by-wire throttle - is it a lot more for a
FADEC?
Single power-lever (maybe the prop-rpm separate or even that controlled by
single lever), no mixture adjustment needed...
Best Regards,
TJ
Hi TJ,
Smoke is very hard to clear up. Visibility here in Fla was less
than 1/4 mile all day. I thought it was the fires in Georgia & N.
Florida but it is possible that it was from a certain Email list purveyor in
California :-0
Seriously, the C/S prop story about not being compatible with the EC2 is
just that - Smoke. The engine load is accurately reflected by
Manifold pressure and RPM. These are the primary inputs to the EC2 so it
has no problem tracking the variations caused by a CS prop. I don't have
the time to elaborate but it is actually harder to match the fuel
requirements of a fixed pitch prop in most circumstances. The changes
in volumetric efficiency due to rpm change are eliminated with a CS prop.
The full story about the "Dyno incompatibility" is a longer one which I
will abbreviate out of necessity.
It started with Paul's trip to Mazdatrix to test Mark Supenski's P
Port engine with his beloved slide throttle (which had never run
before). As it happens, there is no manifold on an engine in this
configuration so it is difficult to measure manifold pressure. Where are
you going to get manifold pressure from? (did I mention that manifold
pressure was a primary input to the EC2?) To make matters worse, Paul was
so confident in his abilities to make anything work (even an EFI system that he
had zero experience with) that he didn't bother to take the EC2
instructions with him to Mazdatrix. Given these circumstances,
it was no surprise that the dyno run was a dismal failure. Dave at
Mazdatrix yanked everything off the engine, put a webber carb and manifold on it
and got it running in order to get a pull on the dyno.
And so the story of how the EC2 will not run on a Dyno (and by extension,
with a CS prop) was born.
Tracy
----- Original Message -----
Sent: Thursday, May 10, 2007 7:23
PM
Subject: [FlyRotary] Re: EC2
question
Tracy,
what was this talk (some time ago on the other list, .....I get the
essential stuff, but delayed...) that your EC2 is not compatible with a C/S
prop?
That it does not work on a dyno?
Would you please care to clear up the "smoke"....
How far is your EC2 from a true FADEC (or whatever Mistral is calling
there system)
You are already trying the Fly-by-wire throttle - is it a lot more for a
FADEC?
Single power-lever (maybe the prop-rpm separate or even that controlled
by single lever), no mixture adjustment needed...
Best Regards,
TJ
On 5/10/07, Al
Gietzen <ALVentures@cox.net> wrote:
On
Thu, 10 May 2007 09:31:30 -0800
"Al Gietzen" <ALVentures@cox.net >
wrote:
>
> BTW; preliminary results indicate that the
issue I've had with the
> spontaneous changes of settings has been
resolved.
> Al
>
<snip>
What was causing it?
Bob W.
--------------------
Don't know
exactly. Added additional filtering on the circuit board
:
1000pf capacitors were added to:
All fuel injector
signals
All ignition control signals
RX input
TX
output
47uf, 16V tantalum were added to each processor
Pin 8
of connector is now grounded.
Pin 28 of connector is now
grounded.
Al
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