One of the most ubiquitous ignition systems on the planet.
Very popular with the Megasquirt crowd.

Old message:
"I'm investigating using two Ford EDIS ignition controllers.
They will work without computer input, set for 10 degrees
of advance. It just needs a power source and input from
a vr sensor. In normal operation, the computer sends
a correction signal that the controller uses to change
the spark advance. "

snips...

"The EDIS system requires a 36-1 wheel (36 teeth with 1 missing).
I'm thinking that one of the old bicycles that my boys never
use may end up missing a chain sprocket. (As a nod to the
original homebuilders, I think every homebuilt airplane
should include at least one bicycle part.)"


Enerst Christley

I think we can get along with one module and a
four cylinder two coil pack firing 4 plugs.

One coil can fire both leading and trailing
plugs using the four cylinder module.
Early version (DIS) are the most suitable as it uses
HE's to fire and is stand alone.
Does not need a computer.

Later ones (EDIS) use a mag pick and require a special
trigger wheel.

The six cylinder module can be used with a 3
rotor.

I am going to get one and test it.

Paul Lamar