A 120 firing cycle is going to induce a rocking motion on the crankshaft, not enough to be worrying, but other manufacturers have stuck a balance shaft in the lessen the effect.
Only Laverda from memory made a 180 degree triple, but that was a four stroke and was created more by accident than design, something to do with the factory tooling at the time. I don't recall it having any shortcomings but it was replaced with a 120 crank later in life, meaning one more set of points and spark coil.
You will have the same additions on the 475, which will add complexity (and weight ) to a racing thoroughbred. The V configuration of the barrels along with a 120 crank means a very strange firing cycle (0-30-240, or perhaps 0-210-240 ) either of which will provide a unique sound from the pipes, even more than the standard 400NS.
Can you post a picture or two of the pulse sensor side of the engine ?
Ah, I misunderstood. So two pulse sensors only 120 degrees apart on a 90 degree V triple engine (or is there a third sensor hidden above the generator ?)
If the former the crank must have been a 30 degree offset pin on one barrel unless there is some other trickery going on, a programmable but fixed cycle delay in the CDI unit perhaps
