A major advantage is the
1. The pivotable axle-joint angle of 90 degrees constantly moving
2. The Desmodromic valves without valve springs, exhaust and intake. To turn off the exhaust, intake valve opening celebrated by
both parts is the cause of the Ducati L-Twin engine with a twist from the Slow Idle speed up to the high response continuously. And a joint crankshaft make the engine narrower and lighter.