trainfan1 wrote:
AMD Rules wrote:

I'm considering switching to electronic ignition modules for my '69
snip

The modules for Johnson/Evinrude outboards work well, and are specific
to these engines(5.5hp through 40hp). They sense the rise in current at
the magnetos, and are timed to fire at peak voltage... where... guess...
the original points are timed to open. The stator plate moves the
entire timing assembly including the coils, so in effect the coils
become the crank position sensor(s) instead of the mechanical points.

You can check this quite readily if you have ever set your points using
the factory timing pointer that slips on to the crank in place of the
flywheel... it is more accurate to do it this way as opposed to the gap
method, which usually works fine anyway.

The one thing I don't get, is that the modules have gone up quite a bit
in price over the last 20 years. Most of the technology in this area
has come down in price.

Go for it. You will not be disappointed.

Rob

Many thanks Rob, you've given me the confidence to proceed
with the switch to electronics. The peak voltage timing coinciding with
the OEM point opening is the 'secret'. I'll let you know how it works
for me.