18 Cylinders Isotta Fraschini (straight six-cylinder x3 )

[Foketry]

Electronic ignition test with oscilloscope

I asked my friend who builds the ignitions to check how many sparks per minute his ignition can make, if my engine will make 3000 RPM it needs 27000 sparks per minute.
its ignition can reach 120,000 sparks per minute, here are the photos on the oscilloscope

 

[lee webster]

To cut down on the spark jumping all over the place in an Austin Seven distributor cap, we would spray the inside with WD40. It could be worth a try.

 

[stevehuckss396]

Try reducing the spark plug gap. A smaller gap at the plug will give you a higher probability that the arc will be at the plug instead of in the cap. Try a .015 inch gap. I run my v8 at .012 and it helped out tremendously.