Trying to decide on RPM & crank angle sensor

[Steve Ruse]

I'm trying to decide what type of crank angle sensor and RPM sensor I want
to use with our EFI system for a 600cc Honda. Probably we will be using a PC
based control system, if not it will be a dedicated 68*** micro.

We had originally thrown around the idea of using an optispark style optical
sensor, but I think there must be something easier than that. Has anybody
ever tried using an optical encoder? I don't know much about them at all,
but from looking at the spec sheets it seems like they would work, and I
wouldn't have to try to cut out a disk and make it work with a sensor.
Anybody know of a good source or where I could find some datasheets?

Hall effect sensors seem to be very popular. All you need is a toothed wheel
and a sensor, right? What does the output signal look like?

What do you guys think would be the most reliable and accurate sensor? Ease
of implementation is also a factor, not the biggest, but it is a factor.

Thanks for the help!
Steve Ruse

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