If the 12A is using

a too tall distributor you can remove that and use an e-shaft trigger.

Unlike a

piston engine a rotary engine e-shaft trigger knows exactly when to fire

the

spark plugs by looking only at the e-shaft angle.  A piston engine needs

to

know exactly which of two possible revolutions the compression stroke is

on

by looking at the cam shaft.

Paul Lamar

George Lendich wrote:

Paul,
Do you need something on the e-shaft to trigger the sensor.
I want to run this 12A I have here as a demo for the bellhousing and PSRU
and it may save me some money in buying a aftermarket computer.
George  (down under)

There are several different kinds of sensors. The simplest is merely a coil of very
fine wire that can see a steel  discontinuity such as a gear tooth. Very
common in the automotive world these days as four  are used one for each wheel 
on anti lock braking systems. The third gen Mazda uses this type I think.

The other common sensor is a Hall Effect sensor that requires a magnet on the e-shaft
as I recall. Here is an optical system I have 25 years of experience with.
The flywheel or auto tx flex plate is the best thing to use as it is
super accurate.

Paul Lamar
 
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