A scorching early lap from Dani Pedrosa put the Repsol Honda rider on top of the timesheets for almost the entire second day of MotoGP testing at Sepang in Malaysia - but the Spaniard is still undecided in terms of which technical developments work best.
Pedrosa's fourth lap of the day was 0.804sec quicker than new team-mate Casey Stoner had managed when he set the pace on day one. Stoner finished second fastest on Wednesday, but in contrast to Pedrosa the Australian recorded his best time on lap 43 of 44.
Nevertheless, Pedrosa remained 0.664sec clear of the #27 when the track closed at 6pm having improved on his best day one time (third overall) by 1.254sec.
“Today we focused on the new, 2011, engine in the morning. And chassis. Then in the afternoon I checked some shocks, different specs," explained Pedrosa.
“There is nothing clear for me yet regarding chassis, engine and shock after today's test. But tomorrow we will try to get clear feelings on these and maybe try a new fork.
"It would be good to finish the test with a clear idea for the direction of this season.
“Every time you try an item, sometimes it can be only negative and just a few times in life it is completely positive.
"Usually there are ups and downs. So you must get a very precise impression of new parts, and think carefully about the advantages and the disadvantages.”
Pedrosa feels that the new engine is a little more powerful, but still needs further work in terms of delivery.
However, with five Hondas in the top six on Wednesday, Pedrosa is sure that the RCVs will head into the new season with “a higher base setting”.
The 2010 title runner-up also revealed the reason for the worrying numbness in his arm, which he suffered after fracturing his collarbone at Motegi late last season.
“I had a problem with one of the nerves in my neck. It needed some rest, because you cannot do anything to the nerve,” he said. “It is not a problem now.”
Pedrosa is still rebuilding strength in his shoulder, but has been pleasantly surprised by the relative lack of pain, after riding for 61 laps on day one and a further 39 laps on day two.
The top non-Honda on day two was Yamaha's Ben Spies in third (+0.738sec), with Hector Barbera the leading Ducati in tenth (+1.323sec).
Seven time world champion Valentino Rossi was 13th (+1.827sec) as he continues to struggle with his healing shoulder.
The third and final day of the first 2011 pre-season test takes place at Sepang tomorrow.