Paul,

 I think the way you drew this diagram the front and rear rotor plugs
 will
 fire at the same time and waste a spark.  That is the way Mazda does
 it.

 If we want to be kinder to our plugs, we have to separate the
 sensors in
 the axial direction.  For example one sensor is inboard and the other
 mounted at least 3/4" further outboard.

 Solution 1 - Two plates, with one projection each.   3/4" spacer in
 between the plates.
 Solution 2 - One plate but with one of the projections bent in a
 dogleg
 to clear the  inboard sensor.


 Doug in Japan

 Yes. You are correct.  Two wheels and off set sensors fore and aft
 will prevent that.

 Paul Lamar

Paul -

You're doing it AGAIN.

Any trigger wheel used to fire ignitions directly uses only ONE tooth
(remember that: ONE tooth).  The sensors are spaced 180 degrees apart
to fire 180 degrees apart.

You keep putting TWO teeth on the timing wheel.  Stop doing that.
You're confusing people. :)

-Vince Orton

Right Vince I have to drive a stake through the heart of that picture.
Now all I have to do is find it among the 300,000 files :)
Here it is corrected.

Paul Lamar