[Diy_efi] fuel injection for an airplane engine

[Bruce]

Even with the best backup system in the world, if you have to make the
switch to a backup at take off, things can get interesting.   If one is
defensive driving they always have an escape route, so with an engine stall,
all one needs to do it use that.   Flying by instruments, on approach,
winding up too way tooo low, demanding power, and having an ecm die at the
same time, ain't a good situation.   Planes tend to operate at higher speeds
then cars, and there can be times, in an airplane where you just don't have
time to cure a problem.
   My point was aviation can be less forgiving then cars, and I'd like to
have a system actually designed for critical useage rather then from an
industry where they weight progress as a matter of how much litagation they
can avoid, rather then design the best product possible.   Again, just my
opinion, and reguardless of your ranting about it, it is what it is.   If
your happy with the success rate of using automotive application stuff in
aircraft fine, that's just your judgement, not a universal truth.

Like I said, in my book/opinion etc., I'd think the better plan is to design
a dedicated unit rather then use an automotive unit for an aero application.

Excuse me for ignoring the waste of band width you're so noted for.
Bruce


----- Original Message -----
From: "Garfield Willis" <garwillis at msn.com>
To: <Diy_efi at diy-efi.org>
Sent: Monday, May 27, 2002 4:12 PM
Subject: Re: [Diy_efi] fuel injection for an airplane engine


On Mon, 27 May 2002 14:37:52 -0400, "Bruce" <nacelp at bright.net> wrote:

>----- Original Message -----
From: "Brian Michalk" <michalk at awpi.com>
>> The SDS has the simpler of the two with batch firing, plus they are not
>> afraid of aircraft.
>
>And, this is is from what?,
>The litagation from the families of those that depart this world.   While
>you might take responsibility, which is fine, too often the families take
>the lose as more then the risk taker figures, and then sue the
manufacturer.
>  Designing a Aero EFI sounds interesting, using a car based system sounds,
>like a problem waiting to happen in my book.   Two totally different design
>specs..  You need more then a limp home mode for aero use in an aircraft,
>IMO.
>  What might be slick in a car, maybe fatal in the air.

You might consider reading a person's post and trying to understand it
some, instead of uttering some self-righteous hysterical quasi-biblical
pontification out of 'your book'. BTW, I thot your book was long outta
print, or has "Snow White in Drag and the Seven Abused Altar Boys" been
re-released recently due to popular demand?

Brian's last post *specifically* mentioned including a backup
fuel-system in his plans. Here's the quote just incase you missed it,
Your Emminence:

>I am retaining one mag, and have a manual
>backup injector scheme, so I should be able to disable the Autronic and
>still stay in the air.

This redundant "5th injector" scheme is widely applied, along with a
number of other redundant methods, in eXperimental aviation's
application of EFI. None of which you obviously know anything about.
Also obvious that Brian knows a bit more about this than you do; why
don't you ask questions and learn something instead of ragging off at
the mouth in an area you know zip about.

The funny thing is that EFI proformance hobbyists in automobiles have by
orders of magnitude in all likelyhood, caused far greater loss of life
to themselves AND innocent bystanders, compared to EFI'd aircraft engine
experimenters. Think about that, the next time you go out on the open
road instead of the dyno for a hi-po tuning session. If others give you
the benefit of the doubt, and assume you take extra care when doing
something potentially dangerous, then have the simple courtesy to extend
the same benefit of the doubt (or at least read the friggin post so you
at least have a clue) to others.

BTW, you make a lousy Pope. I would think the menopausal crankiness
alone would disqualify you, notwithstanding your penchant for assuming
infallability. Your book, indeed. Snort.

Gar




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