Cycle News

Cycle News 2015 Issue 04 January 27

Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles

Issue link: https://magazine.cyclenews.com/i/452615

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SYLVAIN GUINTOLI'S APRILIA RSV4 RACER TEST P96 of them, Melandri six)—essen- tially thanks to a massive end- of-season spurt in development aimed at refining the electronics package and chassis setup of the most powerful motorcycle in the paddock. The chance to experience that performance for myself came during one of Aprilia's repeat visits to the Mugello racetrack to develop its MotoGP contender for 2015. It had been two years since I last rode the Aprilia (Max Biaggi's half-point title-winning season) and the difference in setup and architecture between his and Guintoli's bike was im- mediately noticeable. Compared to Biaggi's very-'90s stance—a thick rear seat pad to push him- self forward to load up the front wheel with his body weight—the French World Champion's title- winner has a much more rational riding position. I could feel I was sitting lower in the Aprilia, which also felt longer, but still pretty slim. Plus it didn't feel quite as nervous as the Biaggi bike, and best of all had a race-pattern gearchange, rather than the street-pattern shift that Max never persuaded himself to stop using. But that impression wasn't just down to the riding position, as I discovered in my post-ride debrief with Albesiano, who was the man responsible for over- seeing the creation of the RSV4 when development began back in 2005. "For 2014 we altered the chas- sis geometry to get better race pace, at the expense of qualify- ing times," said Albesiano. "So the bike is indeed lower and has a longer wheelbase [56.9 in. to 57.6 in.], with more conservative steering geometry [a 24.8-de- gree head angle with 107mm trail] aimed at increasing rear tire life." Aprilia also found more top- end horsepower, with over 240 bhp at the gearbox at 15,000 rpm according to Albesiano. That's 10 more than before but at the expense of a little less down low. The Aprilia RSV4 that Sylvain Guintoli rode to the 2014 World Superbike title.

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