Sure seems like a slick system, no coil, no MSD box, nothing...turn it on and off by switching ground on and off if I understand correctly.
They are pricey though, but are hand US made to order which is nice.
There is an option for a mechanical tach drive, but most are electric these days (including my smiths) are there options for driving these off something besides a coil or MSDbox?
Standard Eight Cylinder Magneto - Joe Hunt Magnetos
Cheers
Steve H
SPF 1764