Valentino Rossi is approaching the end of his initial testing allowance on Ducati's 2012 1000cc bike after a further day of running at Mugello.
The seven-time MotoGP champion took over from test rider Franco Battaini, who had been on track on Tuesday and Wednesday, today for what was his sixth outing on the 1000cc GP12. Factory riders are allowed eight days of testing on the 2012-rules bikes during the 2011 season.
Rossi had a fall during the session but was not hurt and completed 82 laps. No times were released.
"It was an interesting day, although it was also quite long, because we rode until 6:30," said Rossi. "Developing a bike requires a lot of focus and effort, but it's also very exciting and fulfilling to be part of a group of people pushing as hard as it can in the same direction.
"Today we confirmed various aspects of the GP12's electronics and chassis, collecting a lot of useful information for [technical chief] Filippo [Preziosi] and the guys in the factory. I think that the work is well underway as we prepare for our next steps."
Rossi is already racing a version of the 2012 bike fitted with an 800cc engine, as Ducati made an early switch to the new chassis following a poor start to its 2011 season, although the change has yet to bring an upturn in results.