Bit more done, the GM 4 pin ignition modules I was waiting for arrived. Mounted on a large heatsink, probably way more than they need , but, the cheap ones are known to fail if they get too hot. Supposedly they need about 9 sq/in, total area of fins is around 23sq/in. Still needs some clean up and thermal transfer paste under modules but that will be after I drill and tap mounting holes
Been playing with high speed micro drill (Dremel clone
)
I'm in the process of making a 'drill press' so I can make some new emulsion tubes for VM carbs. Hoping I can mount magnetic rotor to it and check ignition will trigger at 28,000 rpm for testing
Being mounted on end of camshaft it will never see more than 6,000rpm (12,000 crank rpm) 8)
If it all works as expected it should spark all the way up, but, I think coil charge time may be too short, in that case I'll find out where it starts miss-firing
This is just a stopgap ignition while I'm working on programmable one
Going to start making a new fork brace soon