Ducati explains the MotoGP Desmosedici GP9

desmo-gp9-2 Ducati Corse CEO explains features of the factory’s 2009 MotoGP racer, the Desmosedici GP9.  The main talking point of the 2009 Ducati Desmosedici GP9 is its carbon fiber frame, a development which marks a giant leap forward from the factory’s former steel trellis chassis. Ducati’s MotoGP rivals all use aluminum frames.

“For 2009 we have many new things, starting with the bike: the GP9 is characterized by a major change in the chassis, with the switch from the traditional Ducati steel trellis chassis with a carbon fiber frame that brings the upper part of the engine up to the level of the steering column,” confirmed Claudio Domenicali.

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“It is a change we have thought about and tested for a long time, firstly with Vittoriano [Guareschi], who is always our first point of reference. He gave his approval to the new system and then the official riders tested it at Barcelona. We won the MotoGP World Championship with the trellis frame so it clearly a very effective design but we have been looking to take another step forward that can help us overcome some of the problems we’ve had, specifically with the MotoGP bike.”

Ducati has also worked on improving its V4 engine, with the emphasis on rideability rather than outright performance.

“Amongst the other updates on the GP9 one of the most relevant is an evolution of the engine management system, with a new combination of airbox and mapping that should provide a flatter power curve and improve rideability, as well as improving outright power, which currently remains more or less the same as last year,” he declared.

Ducati Desmosedici GP9 Technical Specifications

Engine: Liquid-cooled, 90 degree V4 four-stroke, desmodromic DOHC, four valves per cylinder.
Capacity: 799cc
Maximum power: more than 200hp
Maximum speed: In excess of 310 kph/192 mph
Transmission: Six-speed cassette-type gearbox, with alternative gear ratios available. Dry multiplate slipper clutch. Chain final drive.
Fuel Injection: Indirect Magneti Marelli electronic injection, four throttle bodies with injectors above butterfly valves. Throttles operated by EVO TCF (Throttle Control & Feedback) system.
Fuel: Shell Racing V-Power
Lubricant: Shell Advance Ultra 4
Ignition: Magneti Marelli
Exhaust: Termignoni
Frame: Carbon fibre chassis, pressed aluminium swing-arm.
Suspension: Öhlins upside-down 42mm front forks and Öhlins rear shock absorber, adjustable for preload, compression and rebound damping.
Tyres:Bridgestone 16.5″ front and rear
BrakesBrembo, two 320mm carbon front discs with four-piston callipers. Single stainless steel rear disc with two-piston callipers.
Dry weight: 148kg

Nicky Hayden & Casey Stoner with the GP9
Nicky Hayden & Casey Stoner with the GP9

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