QUOTE="HeadSmess, post: 415041, member: 11023"]now that i agree with... hmmm... thinking how this could be implemented...
trigger voltage is charging a CR circuit, that is shunted with suitable zener, so once voltage across CR reaches certain level, thyristor is never triggered? im sure theres several ways to do it...[/QUOTE]
I'm no electrical engineer, but wouldn't something that limits the frequency do the job? I would think a low pass filter set at for example 160 Hz to limit at 9600 rpm would do the job.
alternatively, but a bit of a rube goldberg, does anyone make a tach with a shift light that will work on a single cylinder 2 stroke? hook the shift light output to a relay that cuts the spark and you've got an instant rev limiter.
first option is a soft cut, nice and easy on the motor. second is a hard cut, way more fun than a soft cut.