We were all saddened when we heard the report of Ian's aircraft mishap.

It

is a terrible loss for anyone that has spent years of effort in creating

an

aircraft.
     I seem to recall that Ian was using a MicroTech ECU, as am I.  If

Ian

is still monitoring this list, I would love to hear anything at all that

he

might be able to offer regarding how he initially leaned his engine with

the

MicroTech, possibly with basic numbers and/or methods used. I still have

my

head buried in the ECU manual....just hoping that Ian can give me the
layman's leaning version, especially pertaining to initial setup.  Ian,

if

you are still online and may be able to get me started in the right
direction, please contact me off-line (since most people on the list
probably have Tracy's ECU) at  sqpilot@earthlink.net    My 13b starts on

the

first or second revolution, and idles around 1400 rpm, but with an EGT

of

700 degrees at 4000 rpm, I'm pretty sure I'm running rich, plus I get

fuel

dripping out of my throttlebody upon shutdown, regardless if I shut down

by

turning off the injectors, or turning off the fuel pump, or turning off

the

ignition switch.  Thanks in advance for any helpful hints you may be

able to

share.  Paul Conner

G'Day Paul,

Re the Michrotech ECU, I am surprised you are having difficulties because it
should have come preprogrammed. Some users
don't even have the remote control unit.Check configuration on page 20.
 One of your problems may be that the injectors are not staged. The
injectors in the engine block are used all the time but the ones in the
thottle body should only operate after about 3000 RPM. Page 18 under REVstg,
Mapstg and %Stage.  (misprint where it says 150% should be 100%)  50:50
seems to work OK.
Setting the mixture is helped by the Data Screens, page 21, Data 4 shows
fuel air ratio. This also shows on the screen when using Function F1 to set
the injector time under load, when red program button is pressed. You must
have an exhaust gas oxygen sensor and be running unleaded fuel for this to
work. Wait a few seconds for the EGO to respond.
Go to options page 17 check that Mixtrm and TIMtrm are set to 0 %.
Set injector times to give 14.7:1. using the F1 function. Difficult to do on
the ground but can be fine tuned with a mate at the controls in the air. On
the ground make sure it resonds to a rapid thottle opening. On mine I had to
use the thottle position indicator (TPI) function for this because it would
come in when climbing. See page 13. Pump 1 and 2.
Mixtrm can be used at altitude to lean to 16 or 17 :1 for economy cruise.
Hope this helps.
Ian Beadle.

 
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