Wednesday, January 22, 2014
Ducati 848 Nicky Hayden Edition
The 849cc engine has bore and stroke values of 94mm and sixty one.2mm respectively, that turn out a ratio thats solely slightly inferior to the 1098 (1.54 compared with one.61), whereas maintaining the highly ‘over-square’ layout typical of racing engines.
Power output is a formidable 134hp (98.5kW) at 10,000 rpm and most torque is seventy one lb/ft (96Nm) at 8250 rpm. the ability and torque values ensure the high performance level of this engine, particularly compared to its predecessor, the Testastretta-engined 749.
The cylinder head has been changed in line with the characteristic bore and stroke of the engine so as to optimize the fluid dynamics of the intake (straight and plunging) and exhaust ducts and combustion chamber. The compression ratio is 12:1.
The valve angle is that the same because the 1198 engine and diameter is thirty-nine.5mm for the inlet valve and 32mm for the exhaust. The technology used sees the applying of a bi-metallic alloy that mixes increased lightness with resistance and reliability needed for these explicit parts. The desmodromic management system has additionally been designed with the load and therefore the inertia of the new parts in mind, permitting extraordinarily economical valve raise throughout intake and exhaust phases. the wonderful results achieved are confirmed by the engine’s power figures, manufacturing outstanding performance thanks additionally to the utilization of MotoGP-derived elliptical throttle bodies, that are fitted to the 1198 engine. The 2010 model year sees the addition of recent light-weight cam belt tensioner pulleys; improving performance whereas shaving weight.
The design of an avid elliptical throttle body for the 848 demonstrates the eye that Borgo Panigale engineers have dedicated to the event of the Superbike vary. The cross-section is reduced from the sixty sq. mm of the 1098 to fifty six sq. mm therefore on optimize fluid dynamics at each engine speed. a bit like on the 1098, the new cylinder heads like fewer parts and embrace magnesium covers.
This Testastretta Evoluzione engine sees the introduction of a special technology for the development of the engine crankcase: Vacural casting. this can be a forced vacuum die casting technique that permits jet characteristics to be improved because of the absence of porosity, gas inclusion and oxidation. this enables extraordinarily high measurement precision and larger ductility for aluminium alloy. Designers are able to harness the advantages of this innovative method by redefining the form and therefore the wall thickness of the new crankcase by means that of FEA (Finite part Analysis) checks, that allowed the desired reliability standards to be achieved, whereas simultaneously getting a major weight saving of three.5kg.
The 848 engine is fitted with a silent modular wet clutch, characterised by an exceptional resistance to wear that may cause superior period. This answer makes a helpful contribution to weight saving, estimated to be around one.6kg, that is additionally thanks to the utilization of a unique variety of clutch cowl.
The high power figures achieved by this engine additionally return from the utilization of identical variety of oil cooler and coolant radiator because the 1198’s engine, with an increased surface space assisted by light-weight, high flow electrical fan assemblies.
Finally, the 848’s exhaust system follows identical layout and uses identical innovative technology because the 1198. The system terminates with Ducati’s trademark twin under-seat silencers, delivering the unmistakable signature sound of the large bore 90° L-Twin.
This power unit, a bit like all the opposite Ducati engines, has been designed to suits Euro three exhaust emission norms.
Chassis
Trellis frame
Developed in cooperation with Ducati Corse, the 848 Trellis frame incorporates a simplified tube layout that includes main section tubes increased in diameter from 28mm to 34mm, whereas being reduced in thickness from 2mm to one.5mm. The results a 14 July increase in rigidity and a weight saving of one.5kg (3.3lbs).
Single-sided swingarm
The 848, as all the Superbike family, is provided with a novel single-sided swingarm. The engineers were inspired to re-think the development technique of this part. {the thereforelution|the answer} was to provide the most operational parts using individual aluminium castings so on guarantee strength round the pivot points, wheel hub and suspension links, with fabricated aluminium sections used to complete the development into one, superbly designed element.
Rear suspension
Highlighting the method during which individual parts are influenced by one another, the new light-weight Trellis frame and single-sided swingarm have enabled a a lot of compact and any weight-saving rear suspension linkage system to be used that includes separate lower pick-up points for the push-rod and suspension unit. This ‘tandem’ style effectively reduces stress round the linkage pick-up space of the Trellis frame. operating beside this highly economical linkage could be a totally adjustable Showa single shock for the 848, identical because the 1198.
Front suspension
At the front the 848 is provided with totally adjustable 43mm Showa forks with radial mounts. this sort of front suspension is professionally track-tuned and offers superior road holding, delivers superior feedback, and helps each rider to be a lot of assured and au fait.
Control
Brembo Monobloc calipers
The 848 brake system is characterised by M4 calipers using four 32mm pistons and 2 radial mounted pads. Matched to the calipers are 2 320mm discs and therefore the combination of those components achieves spectacular braking power.
