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My mate had a 750SS Ducati.  He fitted an ignition system from a Honda V twin, which retarded at low revs and advanced as the revs rose.  It made the bike much less harsh to ride.  He had a bit of trouble getting the trigger to work. But he was a mechanic and had the instruments which allowed him to watch the system advance.  I think the Honda was a VT750.

With a Commando, it is not easy to fit a crank operated trigger.

One thing of which I was never very aware - a four-stroke engine behaves silimarly to a two stroke in terms of the effect of the balance of the things which affect combustion.  I never used to run my motors lean enough. That balance has a big effect on performance.


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