Subject: Where to install EGT sensor?
From: ACRE
Date: 3/18/2004, 8:04 AM


Well, now that I have my 13b running smoothly, I need to address the
installation of an EGT probe.   I have the Microtech ECU, and an
AV-10
engine monitor.  It is my desire to connect the EGT and CHT probes
to
the
AV-10 engine monitor. I'm assuming that I can just purchase and
install
the
spark plug ring type sensors for the CHT.

    As far as the EGT, I have the original cast iron manifold, with
the
oxygen sensor. (My Microtech ECU likes that).  For those of you that
are
using the stock cast iron manifold, where did you install your probe
for
EGT?   Attached is an older picture of my exhaust system.  Thanks
for
any
and all suggestions.  It sure is fun making hmmmmmmm noises.  I am
pleased
that it is not as loud as I thought it might have been.  Thanks
again to
all.   Paul Conner


Paul,
I had a look at the Microtec web site and was wondering which model you
chose. I sent off a request for information and got no response at all.
George

Hi, Geroge....I have the MicroTech LTX-8 and also the hand-held programmer
(which is can also be panel mounted).  This allows programming the ECU
without the use of a laptop.  I mounted mine on the instrument panel, and it
has a brightly lit background that shows up very well, even in bright
sunlight.  Let me preface all of this by stating that I am totally
unfamiliar with Tracy Crook's system, so I cannot compare the two. I can
only tell you about mine.  I know that several people on this list are using
Tracy's and they are better qualified to comment on his system.
      Installation was easy. The unit comes pre-wired with locking plugs on
the end that plugs into the "brain box", or the LTX-8.  There is also a male
barbed unit on the LTX-8 that you install, no make that push on....the
supplied rubber hose that connects to your manifold.  That's it for that
end.  The other end of the wires are all labeled, ie  water temp sensor,
crank angle sensor, coils, fuel pump, etc. I am electrically challenged (to
put it mildly), and found it to be straight forward.  They also provide
detailed written instructions, and also a wiring schematic.
     The hand held (or in my case, panel mounted) programmer seems to have a
lot of nice features. It has a "basic" program so that you can start your
engine as soon as it is hooked up.  That actually worked.  About two
revolutions of cranking and the engine fired right up. I have only two
injectors, and I mistakenly wired one up to the primary system, and the
other to the secondary system....it ran anyways. Problem was that one of the
intakes dripped fuel after shutdown, so I switched wires.
      Unfortunately, I am just getting to know the panel mounted programmer,
so I can't give a very informative report on that yet. I can say, however
that it will do a lot more than I will probably use, for instance, it can be
set to limit boost, by limiting the amount of fuel delivery once you reach
your preset boost limit, it varies the fuel mixture according to air and
water temperature, you can lean it during operation/flight, limit RPM at
wide open throttle,  (WOT), set the timing advance curves, set up aux maps,
it can turn on your cooling fan on your radiator (if you have one) at any
temp you select, and many other features that I have not yet familiarized
myself with yet. I just started reading the manual last night.
     The dealer in the USA is www.microtechusa.com    I hope some of my
rambling was of benefit?    Take care, and good luck on your
selection/installation.   Paul Conner, 13b powered SQ2000, engine running

 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.