Don Harris wrote:
>
> Any of you have experience with timeing advance for a gasoline engine.  I
> have
> a hall affect pickup on the prop hub for a model airplane engine, and will
> us this to trigger the appropriate delay for the spark. The pic will accecpt
> the hall affect input and initiate the appropriate delay (based on RPM),
> and then output a pulse to trigger a capacitive discharge ignition.  I have
> designed the CD but need help with programming the pic (12cxx 8 pin). I
> am an electronics tech but could probably modifiy code to suit my application
> if there is an example out there.  Does not have to be for the 12cxx
> chip.
>
> Thanks in advance
>
> Don Harris
I realize this not is responsive to your question however the subject
interest's me .Should you not allow for throttle up and temperature
variations as well as rpm? Just curious.Oh yeah and I assume it was the
magnet you mounted to the hub or have you a more subtle method.Lead me
Tony M.