DESIGNED FOR RACERS, BUILT FOR RIDERS
Evolution of a unique and victorious project
More than 200 hp, greater performance, lighter weight, more effective on the track and new riding pleasure on the road, with the best possible technology provided by the advanced APRC and race ABS electronic controls.
65° V4 INCOMPARABLE ENGINE
In terms of quantity and quality of the operations, the unrivalled Aprilia V4 has every right to consider itself a radically new unit: if there were any doubts, they are quickly dispelled by the
more than 16 additional HP and the 1.5 kg less
than its predecessor. This is one of the Aprilia RSV4 RR elements that is most closely derived from the racing world and the one on which the Aprilia Racing Department was able to work the most with the factory production.
The primary and unique characteristics of this gem of Italian technology, the ones that led to the creation of the best superbike of all times, remain unchanged. This is the world's first full scale production motorcycle with a high performance narrow V4 engine , the most revolutionary and powerful engine ever built by Aprilia. An engine that has become unmistakeable because of the use of “total” electronics , because of its extremely compact size and exceptional light weight .
The main goals of the new V4 project were clear: increase power across the board, exceeding the threshold of 200 HP maximum peak and at the same time increase the already generous torque at all engine speeds. To achieve them work was done on decreasing internal friction, improving combustion efficiency and fluid-dynamic efficiency as well as on increasing the maximum rotation speed. The Noale engineers redesigned almost all of the internal and external elements .
Starting from the top, the 65° V4 has a new air box with filtering elements perpendicular to the air flow, studied with sophisticated CFD (Computational Fluid Dynamics) systems in order to minimise load losses and maximum pressure in the intake ducts. The upper injectors are new, whereas the variable setting intake ducts were redesigned to the benefit of an even wider range of management in terms of their travel. As with previous models, each bank has a dedicated servo unit actuating the two throttle bodies of that bank only . This means that the aperture of the throttle valves and consequently the quantity of fuel injected can be controlled independently. This is a never before used solution in a production bike that opens up practically infinite possibilities for power delivery control and works hand in hand with the APRC system .
In order to improve the fluid dynamic performance, the heads were redesigned with intake and output ducts that have new geometries and contouring on the ends machined by a numerically controlled tool. The combustion chambers are no longer obtained through a fusion process but by a finer mechanical process which is also numerically controlled . In order to improve reliability and precision under extreme loads the height of the valve seat seals was increased and the relative lubrication reservoir was modified. The heads now have a triple layer of gaskets. The timing system confirms the innovative mixed chain and gear kinematics of the Aprilia V4 (with the chain camshaft driving only the intake camshaft, which in turn drives the exhaust camshaft via a gear) which allows for extremely compact heads especially in the area beneath the frame spars, much narrower than would otherwise be possible. In order to increase the maximum rotation speed a painstaking study was conducted on lightening the parts in motion of the elements included in the heads . All four valves are now in precious and lightweight titanium (the intake valves are oversized at 33 mm); the valve springs are completely new, the intake valve springs are made with oval section wire whereas the relative tappets and caps were lightened. The camshafts have a brand new profile and were lightened by a whole 500 grams. Moving downward, the crankshaft now has connecting rod pins reduced to 36 mm in diameter, while the Pankl connecting rods are lighter by a total of 400 grams.
As in previous models, the monobloc crankcase with integrated aluminium cylinder liners ensures maximum rigidity and consistent performance. The upper half of the engine case is now made with a new shell fusion and has been lightened and reinforced; it also now has an optimised ventilation system in order to reduce power loss due to air pressure inside the engine crankcase. The lubrication system has also been redesigned . A brand new oil sump ensures increased draught no matter what position the engine is in (for example in the most extreme leans or in maximum acceleration/deceleration conditions) despite the oil level being decreased in order to decrease friction. The “rose pipe” is also new (oil pump intake line), now equipped with a new overpressure valve and thinner mesh filter. The piston cooling oil nozzles were also replaced and the gearbox now has a valve regulated direct hydraulic lubrication circuit. The latter uses lightened primary drive gears and takes advantage of new ratios which have been optimised to fully exploit the increased engine power. The entire exhaust system has also been completely redesigned with revamped electronic valve management, now equipped with two oxygen sensors (one per bank), while a new, more powerful ECU contributes to more precise management of the engine in the area of maximum rotation achievable.
RSV4 RR A NEW ERA
Aprilia RSV4 RR represents
the most important and profound advancement ever made
on this extraordinary model. A development that even involved the design. The style of the new RSV4 is the result of the perfect combination of form and function. The careful design led to the creation of the most compact full size sport bike on the market, where technical elements such as the impeccable aluminium double rail frame contribute to emphasising its racing vocation.
The front end has been completely redesigned : now there is a new, more protective top fairing, created after a careful wind tunnel aerodynamics study, which provides better protection from the wind for riders of any height. This choice has a positive impact not only on the track when the rider is seeking protection to achieve maximum speed, but also on the road where greater comfort is provided thanks to the lower air pressure on the body and helmet. The characteristic triple headlight is also new , now with a more modern shape and an LED parking light. The mirrors are new , also the subject of a wind tunnel study, which combine excellent aerodynamic penetration with improved visibility and built in LED turn indicators.