REFLECTOR:OT: Thanks Guys!

[Greg Poole]

Jim S.,

Often, when reading your (& Scott's & Jim A's) posts, I end up thinking
"gee - that guys coming on a bit strong" (read; room for some negative
reaction from others) ...but credit where credit is due ....& now that it is
close to years' end....I want to thank you blokes collectively for not being
afraid to fearlessly challenge, question and research beliefs and generally
accepted "wisdoms".

I am sure others like myself are stimulated & ultimately educated by the
different point of view (right or wrong) you fellas put across at the risk
of being savaged.(..on the other hand you could all be just plain ignorant &
thick skinned!! *^)). In any event you raise the subject and others qualify,
question & seek to inform from your lead - thanks!

Now to our unsung hero behind the scenes ....Brian Michalk. Brian - thanks
for quietly tending the Reflector and making sure we all get our daily dose
of Velocityism. I'm going away for two weeks Christmas break on Monday and
am sure will be wondering what matters are being persued in my absence.

To All in the Velocity camp; A Merry Christmas and Safe New Year,

Greg in Sydney.
Std RG E.


----- Original Message ----- 
From: "Jim Sower" <canarder@frontiernet.net>
To: <reflector@tvbf.org>
Sent: Sunday, December 21, 2003 11:31 AM
Subject: Re: REFLECTOR:FADEC info


> <... safe to say that (probably) all of the gotcha scenarios have been
addressed ...>
> That's comforting.  I had hoped that my questions were specific enough to
warrant
> specific answers.  I think it would be interesting to know, if EGTs were
driving fuel
> delivery, how they address failure modes such as gradual deterioration
(inaccurate
> output) of the probes and how one might go about distinguishing between a
> deteriorating EGT probe and a deteriorating something else (like cylinder)
that has a
> similar effect on EGT.
>
> But then again, my questions were somewhat rhetorical.  I am much more
interested in
> auto conversions for a variety of reasons not least of which is that I am
not in a
> position to spend what FADEC costs.  Seems to me that spending all those
thousands of
> $ to put a "modern" face on an anachronistic Lyc is an exercise in trying
to make a
> silk purse out of a sow's ear.
>
> Will it be as reliable and accurate as late model automotive fuel
controls? ... Jim S.
>
> Wayne Lanza wrote:
>
> > Hi Jim,
> >   If you haven't been made aware of the Aerosance web site - here ya
> > go...
> > I worked closely for a week with the designers of the system while
> > installing
> > the Continental FADEC system in Velocity's XL Dash 5 demonstrator
> > aircraft.
> > They have designed many failure mode operations into the system, safe to
> > say that (probably) all of the gotcha scenarios have been addressed.
> >
> > Have a Great Holiday,
> > Wayne Lanza
> > Composite Design
> >
> > goto the Aerosance web page at - http://www.FADEC.com
> > ________________________________________________________________
> >
> > On Thursday, December 18, 2003, at 11:16 PM, Jim Sower wrote:
> >
> > > I need some help with some specifics on how FADEC works.
> > > <... FADEC system meters the fuel-air mixture to ... power ... 100
> > > degrees Rich of
> > > peak ... cruise ... 100 degrees Lean of peak ...>
> > >
> > > Is it safe to assume that this FADEC feature is driven by EGT sensors?
> > >
> > > Is it further safe to assume that FADEC varies fuel delivery from one
> > > cylinder to
> > > another according to individual EGTs (which of course are caused by
> > > uneven air
> > > delivery through the non symmetric intake runners)?
> > >
> > > IIRC, EGT probes tend to fail by degrees, giving increasingly
> > > erroneous readings for a
> > > while until they quit altogether.  How does FADEC [allege?] to deal
> > > with partial
> > > failures of EGT probe?  Total failure?
> > >
> > > Inquiring minds need to know .... Jim S.
> >
> > _______________________________________________
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>
> --
> Jim Sower
> Crossville, TN; Chapter 5
> Long-EZ N83RT, Velocity N4095T
>
>
> _______________________________________________
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>
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