Go here:
http://www.rotaryaviation.com/eficont.html

Scroll down until you see these words:

"Planning to use the EC3?  We get a lot of requests about the number
of wires needed for the EC3 and other installation details. If you'd
like to get a better idea of how to prepare for and install the EC3,
please CLICK HERE"

Click on "CLICK HERE"

and download "EC2AinstallRev2.pdf"

Read the pdf. There will be a quiz later.
Those passing the quiz will get a honorary degree in computer
science from the ACRE :)

Paul Lamar



OK, time for another sophomoric question injected into this
otherwise erudite discussion (sorry....)  What are the most
popular mixture management/ignition systems used in
rotaries?  And how well do they work?  I am getting a little
nervous reading about "flooding" issues, "difficult to tune"
complaints, about Tracy's system.  Any comments?  Thanks.

Gene Kahn

It is hard to say. Mazda buys them from different companies.
Perhaps Mitsubishi. In rotaries flying it's Tracy Crook's
computer hands down. Any time one starts to deal with problems
some people get the false impression everybody is affected that
is using that device. Many people have tuned Tracy's product
and use it with no problems. My feeling is it could be
made easier to tune and cheaper.

The flooding issue came up the day Mazda introduced the
side exhaust port RX8 rotary engine. I bought one of the very
first sold in LA. My brand new RX8 engine flooded in my drive way
within a week and would not start. I have been working on
race cars since I was twelve and the RX8 was the sixth
rotary engine powered car I have owned starting in 1973.
Nothing I knew how to do could get it started. The dealer sent a
tow truck and picked it up. It took them a week to get it started.

Turns out the RX8 engine is so good at preventing raw fuel
from going out the exhaust that it was easily flooded.
People and Mazda now deal with it by cutting off the fuel
pump as soon as it does not start on the first few turns.
Generally it does not occur if the engine is warm.

Mazda changed the computer program and I have learned
not to start it up and turn it off without letting
it warm up first. That was 2004 and I have not had
the problem since.

In an airplane it can be fixed by inserting a small tube
in the lower spark plug hole and sucking out the raw
fuel accumulated in the bottom of the rotor housing with
a turkey baster. I suggested to Mazda at the time to drill
a small hole in the bottom of the rotor housing with
a petcock to let the excess fuel drain out on to the
ground :)


Paul Lamar