The 3 rotor uses the old 2nd gen Crank
Angle Sensor running at half engine speed.


There are 12 pulse coming out from the lower sensor
every revolution.

Count 4 teeth and fire rotor two count 8 teeth
and fire rotor three.

Reset the counter on the top sensor occurrence

Very simple to do with one $1 CMOS 12V powered
counter chip.

With CD there is no dwell time so it will always fire at
exactly 22 degree before TDC.


I don't know why I did not think of this 15 years ago :)

No computer necessary. This generates the proper
triggers for the M&W CD ignition system.


Use the M&W to fire the coils. Six simple coils. Not RX8
or LS1 coils. Simple... old fashion coils.


TRIGGERING
Trigger input & coil output numbers (letters) indicate CDI ignition
sequence not cylinder number.

M&W Pro street CDI systems default to falling edge ignition. To
select rising edge ignition install a jumper wire between ‘Trigger
Edge’ and ‘Signal Ground’ pins. Where the ECU contains an inbuilt
igniter it may be necessary to use rising edge ignition. If CDI and
ECU trigger edges do not match timing will be erratic!

I learned about M&W from Jim Medere at Racing Beat. He is using it on
the 600 HP turbo 2 rotor time to climb engine.

Paul Lamar