Rotary Engine wrote:

I am looking for a stand alone ignition system to use with my mechanical
fuel injection.
Does anybody have an experience with this system. I understand that all it
needs is power and a input from a trigger wheel. The units and the trigger
wheels can be found in junk yards I am sure. I can also make a trigger wheel
with a plasma cutter.




Paul,
I am off to a customer meeting, when I return I will call you to go over
ford system. It does require a computer, and the computer is firing the
coils. Available in single coil on plug style as well as lost spark systems
with wires. Obviously the coil on plug has the least possibility of radio
interference. The only parts we could use easily on a rotary is the coil
packs and pick up sensors.
Larry

We might be able to trick the EDIS to think it was connected to a computer.
Ernest has a O-scoop so perhaps he can tell use what data the Megasquirt
must send to the EDIS.
Paul Lamar

-Ernest has no oscilloscope, though I can borrow one.
-The timing wheel can be bought for about $20
-The EDIS module does not require a computer to operate.  It receives a
"SAW" signal from the computer which it will use to modify the spark
advance.  If it doesn't receive a signal for 5 cylinder events, it will
run the engine in standalone mode with 10degrees of advance.  If you lie
to the EDIS by moving the VR sensor you can add an arbitrary amount of
advance.  Setting it ahead by 15 degrees would give the rotary a static
advance of 25, which it is supposed to run with happily at all RPMs.  In
setting up the Megasquirt to drive the EDIS, the first test is to verify
that the EDIS will run the engine without the Megasquirt connected to it.
-The rotary requires two EDIS-4 modules, because the trailing plugs
can't be run in trailing spark mode.  This is actually not a bad thing.
  *You get the reliability of full dual electronic ignition that will
run without computer input if they need to.
  *No wasted spark conserves battery power if you lose the alternator.
  *The VR sensors will have to be mounted close together, but you will
get 5 degrees of separation.  Perfect for driving the trailing plugs.
  *The EDIS in this setup will drive one coil per plug, even if it is
a COP (coil on plug).
  *Boost Engineering says that I can get all the EDIS parts for less
than $159.  I'm still trying to work out how to make payment.

Ernest

Great idea Ernest. That is exactly what I will do. If fact I can cut
slots in the VR sensor bracket or wheel.

BTW I am sending this one at a time. Do you want to be on the list?