EST

[BradyEng at aol.com]

In a message dated 95-12-08 21:19:58 EST, you write:

>
>One problem with this setup, when the fifth magnetic pickup  is triggered,
is
>it at TDC compression/power or is it TDC exhaust/intake.  This is where you
>need a magnetic pickup  on the cam.
>
>

Has anybody tried a crank only system that uses a software scheme to detect
#1 TDC? Something along the lines of starting off as double fire with
independent coils, skipping a spark plug firing, trying to detect the change
in speed, and phasing off of that.  This would be a variation of the old
mechanics trick of pulling a spark plug lead at a time and measuring the
change in idle speed to determine the cylinder that is causing a miss.
 Perhaps this could be done fast enough electronically to be undetectable to
the driver.

SBrady