Ha, I was suggesting you pay Joe a visit, since he's in Iowa too. I haven't really made it a standard product yet, but the beta testing should be about over by now, since he's been running it for two years.
Here's the prototype Hall effect pickup plate. A rotor mounts to the crankshaft, and a little magnet on it passes by the three circuit boards. The main CDI box looks similar to an early H1 12V cdi unit, but it has three outputs that drive three coils directly, eliminating the distributor. The actual Hall effect sensor is the surface mount IC nearest the crank centerline. The white square things on the boards are LEDs that allow timing of the system to be done statically. The Hall effect sensors don't care about engine speed, so if you time it statically, it's also timed through the whole RPM range.
