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Cycle News 1996 11 20

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

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RACER TEST- Fabri%io Pirovano's Corona Ducati 748 SP (Left) The Brembo brakes are the best In the business. The fork Is set up very stiff - too stiff, In filet, for any kind of a bumpy surface. Head angle Is set at the minimum 23.5 degrees. (Below) Unlike Its larger ..".:.>:...:.: superbike brother, the ":,:> .. 748 doesn't use the (,:)t ... carbo.n-flber alrbox <;J fitted to the 916 to ,::§;; stiffen the .:::;.:;,. chassis - it's· "J.?' against .' :.i?/; supersport:. "~~ ru); ...:.~~.:J~ :,..~.:? )~~.~ ;;~~. \0 0\ 0\ ..... o C'l I-< OJ "8 OJ :> o Z 20 used to shake their heads like a gypsy dancer in a straight line because of their radical steering geometry, Piro's supersport Ducati waggles the bars in your hands hard on the gas down the straight, as well as twitching a little while cranked over around fast sweepers. It's a nervous ride - but the payoff comes when you slam into a turn hard on the brakes and revel at the speed with which it changes direction. The 748 SP's homologated, meaty 320mm cast-iron Brembo discs with their top-of-the-line four-pot calipers deliver stopping power allied with feel that's unparalleled in the Supersport class - especially when you use the slipper clutch for the purpose for which it's intended and max out the engine braking coming down through the gears from high speed. Get'ready for a funny click from the clutch action as you use it coming down the gearbox, though. No chatter from the back end however many revs you use on the overrun, no jounce when the rear wheel that's been waving in the air hits the deck again with the engine turning over - just epic deceleration for a middleweight street bike converted to track use. Except, that's not what it feels like if, like me, you're used to racing the 748's single-cylinder sister, the Ducati Supermono. The Corona Ducati may deliver upward of 30 percent more horsepower and weigh 110 pounds more than my desmoquattro single, but the two bikes have a comparable power to weight ratio and above all, share a family resemblance in the handling department. With the excellent grip from the Pirelli rubber, the altered ride height to chuck more weight onto the front wheel (though not as much as the single's extreme 56/44 percent split), the supersport bike feels like a twin-cylinder version of the sharp-steering, nimble Supermono, allowing you to max out comer speeds and turn sharply. How ev ~ f;:::r: tha toni y reall Y,:":}i;, works on the Corona:.':::';:;:.. bike on smooth sections bf-':':;,;' track, because even though' hi·:.:~3.:.~. . went straight from !Jlotocross' tcr·::: .... superbikes a decade ago· withotif-;:-. ever riding the 600cc supersport class ·c':''':'.:':C;~ Pirovano follows supersport convention ":':.' by setting the suspension up very stiff at both ends. That's okay if you're working with mass-production Japanese components which may dictate that approach, but while the forks and rear shock on the Corona Ducati are both the stock parts from the 748 SP, they also happen to be made by Ohlins and can be dialed in a lot more loosely than on the Pirovano bike. Fabrizio's 136-pound star midget fighting weight gives him a big edge in acceleration and braking in a class with limitations on tuning and a strict minimum weight limit, but in spite of outweighing him by a massive 40 pounds on the scales, I found the rear shock just right for me, even if the forks were still way too stiff - Piro doesn't like too much front-end dive under braking, even if he then has to cope with steering into turns with the back wheel waving in the air. What this also means is the bike doesn't ride bumps very well on the angle, like in Zolder's turn one where it chattered the front end every lap over the ridge, running diagonally along the racing line. At the same time, anywhere it's smooth you can just pitch the Ducati into the turn and it holds the line really well as you gradually feed in the power. With more suspension response, I'm sure it would ride bumps better, too. The Ducati is a controversial bike in Open Supersport racing, where some people who race fours talk about "aiming to win the 600cc class" and seem to labor under the burden of a permanent chip on their shoulder. Others just concentrate on the task of beating the Vtwins - and do so. The adjustment in weight limits has evened things up this season, and the relative performance of the Ducatis and 'Yamahas is now very similar. So too is the two bikes' total cost of acquisition under International Supersport rules which permit a greater degree of tuning than in some countries like, say, Australia, where Supersport is effectively a pipe-and-shock, box-stock class. The Ducati's 25-percent capacity advantage is a smokescreen that stops people from seeing the forest for the ..' :. 'trees: The reason the Italian bike wins "'\:;i:

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