Nicky Hayden is under no illusions that there is plenty of work ahead as the American rider completed his final laps on the Aspar Honda RCV1000R prior to the winter testing ban.

Hayden and Hiroshi Aoyama again shared the new production racer on the third and final day of the Valencia MotoGP test in Spain.

The 2006 world champion is feeling in confident mood although Hayden expects to make greater progress with the bike as soon as the team improves the control electronics package, which must be used by all Open class riders next year.

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"We only spent half a day on track today, which was the plan, but we made the most of the time available and took some positive steps from yesterday," he said.

"We improved the lap time and I felt more comfortable on the bike but like I said yesterday this is still a very new project and we have a lot of work to do, in particular with the electronics.

"If we can learn how to get the best out of this area we will improve a lot further. We have gathered a lot of data over the past couple of days and we have some ideas where to go from here," added Hayden, who lapped in 1m 32.123s as he finished 12th fastest, one place ahead of Aoyama.

"It was important for me to have this opportunity to get to know the team and I leave here in positive mood."

Aoyama, who took over from Hayden to round out the test in Valencia this afternoon, also highlighted the electronics as the key to making big progress at the next test in Sepang in February.

"It has been a positive second day because we have made improvements, although we spent a lot of time this afternoon in the pit box working on the electronics," he said.

"Our feeling after two days with this bike is positive but we clearly have a lot of work ahead.

"We need more time to get to know the bike and to set it up, especially in terms of the electronics but we have a two-month break now until the next test and this will give the engineers an important opportunity to continue developing the bike."