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“Box in box” technology helps make the pistons superlight, while maintaining the necessary strength and stiffness to cope with the new V4’s incredible rpms and pressures.
The front chain is driven off the right side of the engine, turned by the crankshaft via a gear on the primary drive pinion.of them: Panigale V4, Panigale V4S and V4S Speciale – the latter two with electronic Öhlins suspension featuring a new Smart EC 2.0 system, plus forged aluminum wheels, lithium ion batteries, and other assorted exotica. The Desmosedici Stradale engine is a 90-degree V4 with desmodromic timing, of course.If that’s not rich enough, the Panigale V4 Speciale is a numbered, limited-edition bike with dedicated livery, titanium exhaust and CNC-machined from billet components. Its 81mm bore (the maximum allowed by Moto GP rules) is combined with a longer 53.5mm stroke than the Moto GP bike, netting a total displacement of 1103cc, not to mention a bit more torque.Compression ratio is 14:1 (seriously, don’t fill up at the Russian gas station).Ducati claims the V4 Stradale makes 214 horsepower at 13,000 rpm, with 91.1 lb-ft of torque at 10,000 rpm.The rear timing chain is driven by a monoblock gear on the left end of the crank. Valve inspection intervals are 24,000 kilometers – 14,913 miles.
Semi-dry sump oiling: “consists of four pumps: one delivery lobe pump and three recovery pumps…
The crankshaft is made of nitrided steel and rotates (backwards) on three main journals, with crank pins ground twice over and offset at 70 degrees.
All engine covers are sexy looking magnesium: cam covers, the oil sump, the alternator cover and the two-piece clutch cover.
A counter-rotating crankshaft offsets some of the gyroscopic effect generated by the spinning wheels which should result in quicker direction changes and greater resistance wheelies under acceleration or rear-wheel lift on decel – but the counter-rotation also requires a jackshaft to convert its spin into the proper direction for the final drive to the rear wheel.
Ducati claims that extra shaft robs 0.98% from the crank, that’s a net loss of about two horsepower according to the boys from Bologna.
The camshaft’s connected to the legbone, no wait, the camshafts are controlled by two silent timing chains.