Jack Miller set the Moto3 pace on both days of private Jerez testing, during his debut for the Red Bull KTM Ajo team.
The young Australian, seventh and top Honda in this year's championship, led the way by 0.402s from returning Ajo rider Danny Kent, despite a fall.
"This has turned to be another good day of testing at Jerez,” said Miller. “I've tried many different things out with the bike, both in terms of new parts and some that had already been evaluated. I've found a better feeling with the bike in different situations.
“The day has been good, with a good lap time at the end, despite the wind. I've been experimenting with different parts and, at the end, I had a small crash without any consequences. The final verdict on these two days is very good and I'm hoping to be back riding at Almeria."
Kent rode the most laps of the Ajo trio despite his recently fractured collarbone in a Motegi Moto2 accident.
"After these two days of testing, I think we have learnt a lot, both myself and the whole team. The final conclusions are not at all bad and neither were the times,” said Kent. “Possibly the step forward that we need to make is down to me, adapting from Moto2 to Moto3.
“The KTM I rode with last year is very different to this one, so I have to keep adding miles to the clock. Today especially we have come a long way, finding a good working direction. I can't wait for the next two-day test in Almeria to keep learning."
Rookie team-mate Karel Hanika was less than a tenth of a second behind Kent, with team manager Aki Ajo impressed by what he's seen from the Czech teenager.
“As expected, Karel Hanika has great talent and has done a very good job - maybe even better than we had expected!” said Ajo. “I'm glad that he has been very consistent, especially late in the day. He's had a couple of crashes, but that doesn't matter; he has shown that every time he tries his hardest.
“I am happy and I have to say that I have a lot of confidence about next year, because we have some very good riders for 2014."
Ajo won the inaugural Moto3 title with Sandro Cortese and led much of this year's championship with Luis Salom.CLICK HERE
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