Speaking to a TV technician today says we should not be using a SCR for switching but a transistor, there are heaps of good transistors in old TV sets hi voltage and current
he said with a SCR the Gate has to be discontented and maybe even the Anode or cathode to stop a lock up, where as with a transistor it wont lock on the same,
Also i think what ever you put into the circuit is what you can get out , to a degree
my circuit draws 100-150 ma's ....... this is why i think i have a weak looking spark even below 10,000 rpm
Even the commercial units draw between 350 and 600 ma's (
http://www.ch-ignitions.com/faq.html )
An intense spark is performance as far as i am aware and a weak spark is what i already had with the flywheel and magnet setup
the motor can run fine with a weak spark But will run alot better with a full powerful spark or even twin plug setup as on my microlight.
http://www.youtube.com/watch?v=QpevOS0VQmk
Brett