Aprilia RSV4 Factory Engine- Narrow-Angle V-Four Technical Analysis

20 Мар 2015 | Author: | Комментарии к записи Aprilia RSV4 Factory Engine- Narrow-Angle V-Four Technical Analysis отключены

Aprilia RSV4 Factory

Tech Analysis: Aprilia Factory Engine Looking at the V-Four from the inside

Racing has always played a role in the life of Aprilia. The small factory in Noale its adventure in the mid-1970s and quickly a major competitor in motocross. (and wealthy) founder and Ivano Beggio then his attention to roadracing, where dominated the 125cc and 250cc until last year, the FIM outlawed two-… engines.

But the 125 and 250 were not enough for Beggio, who his challenge into the realm of giving life to the RSV1000 around a 1000cc Rotax V-Twin. In the very capable of Troy Corser and Noriyuki the RSV1000 failed to achieve the top only by inches.

The 1000cc four-… MotoGP also looked very to Beggio, who poured bushels of into the ill-fated Aprilia project. The bike was powered by a engine designed by Claudio a former Ferrari technician to manage all Aprilia four-… programs. Not only did the 1000cc MotoGP racer prove Aprilia’s racing activity was on too many fronts at the same money was running low.

combination of negative factors led Beggio to sell all of his motorcycling and Moto Guzzi—to scooter Piaggio.

To replace the no-longer-competitive and give Aprilia a second to reach the top of the SBK class, Piaggio a new project. After the first of preliminary evaluations, three configurations remained on the table. despite the Aprilia Cube Claudio Lombardi again up with an “inline-Three” concept.

But he also submitted a narrow-angle design, along with a conventional inline-Four.

In the end, the came out on top by offering the best It had the potential to be narrower than the inline-Three and Four, and much compact, lengthwise, than the V-Four that was proposed as a theoretical comparison but never a viable option by Aprilia’s team.

In reality, a narrow would be more balanced an inline-Three in both primary and order; and though it would be balanced than an inline-Four in order, a very small shaft could cancel any vibrations. A narrow V-Four is slightly less balanced an inline-Four in secondary order, but by a negligible factor; besides, the vibrations would not be any more than those of an inline-Four.

Another major advantage of the V-Four concept was that it be harnessed in a frame dimensionally to that of the world-championship-winning Aprilia 250 GP This was a very positive on which to capitalize, since the 250 was always regarded as the best-handling in its class.

Based on their with the RSV1000 V-Twin, the technicians started with a Vee angle, then enlarged it to 65 for practical accessibility and the best of the intake system’s variable-length stacks. (As a side note, let me out that all the legendary Ferrari have had their Vee angle set at 65 rather than the customary 60 for such engines. Is there any in that? Hard to say.)

Aprilia RSV4 Factory

The rest, as the saying goes, is Aprilia’s narrow-angle V-Four superb performance potential in all The SBK racer delivered in excess of 220 as well as absolute rationality in of overall dimensions and layout, life to a super-compact bike.

To it, Aprilia hired its never-failing Max Biaggi . who won the SBK title in 2010. He had a 2011 season but currently is in year’s championship points And Aprilia’s V-Four now is even its hand in MotoGP, powering a of CRT racers ridden by Randy and Aleix Espargaró.

Apparently, Aprilia’s chief of the Department, Luigi Dall’Igna, has got a lot in reserve. According to credible there are modifications ready to the V-Four’s output past 230 Further evolution will advantage of the standard 81mm rule established by the FIM, bumping the bore from to 81 and consequently cutting the … 52.3mm down to 48.5 for valves and safe higher

Obviously, this Aprilia V-Four has a few more tricks up its (4)

When the men of Aprilia’s R-D Department for the narrow-angle V-Four layout, knew what they doing. The engine is extremely and no taller or longer than an but it is much narrower and shorter a 90-degree V-Four. At 152 lb. dry, the Factory engine does not a meaningful advantage over an in terms of weight.

This top view shows why the Vee had to be stretched from the original design to the 65-degree configuration: to room for properly designed velocity stacks and their system.

Aprilia RSV4 Factory
Aprilia RSV4 Factory
Aprilia RSV4 Factory

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