The last of the factory MotoGP teams to unveil its 2013 livery (Ducati Corse, Pramac Ducati & Repsol Honda here), Yamaha Racing has finally officially debuted the 2013 Yamaha YZR-M1 race bike, along with the team livery for riders Valentino Rossi and Jorge Lorenzo.

Unlike his 2011 defense, Lorenzo will not rock the #1 plate, perhaps getting wind of the dreaded number’s propensity to kill its owner’s chance of a successful title defense. For Rossi fans, the return to Yamaha is surely a welcomed sight, with The Doctor’s neon yellow “46″ working better with Yamaha’s blue and white paint scheme. Somethings just seem to go better together, right?

So the three days of testing at Austin are over, and what did we learn? That Marc Marquez is something special? We knew that, though we didn’t perhaps realize just how special. That Yamaha really needs to find more acceleration? This, too, was known, but becoming clearer every time the M1 goes up against the Honda RC213V on track. That Valentino Rossi’s return does not equate to an automatic 8th MotoGP title? We suspected as much.

The first thing that became obvious is that the Austin circuit itself is pretty decent. Valentino Rossi described it as “a typical Tilke track, with corners that remind you of Shanghai and Turkey.” Unsurprising, given that Herman Tilke, who also designed Shanghai, Istanbul, and many other race tracks around the world, was responsible for designing the track.

The input from Kevin Schwantz was helpful, though, making the track more like Istanbul than Shanghai. The circuit has a couple of highly technical sections, where you go in blind and need to have memorized which way the track goes. It is wide, giving opportunities for overtaking and braking, and has a couple of the fast, fast sweepers which motorcycle racers love.

It also has a couple of tight corners, leaving the bike in a low gear with a lot of acceleration to do. This, it became apparent, favors the Hondas, the RC213V strongest off the bottom, and capable of pulling a gap. Acceleration issues will be a problem for Yamaha this year, unless Masahiko Nakajima and his fellow engineers can find some extra grunt out of the corners.

The situation was similar in 2012, but Yamaha was helped by the problems the Hondas had with chatter. So far, the Repsol Honda men have remained silent on the issue, meaning the worst of it is over. Yamaha have their work cut out, and Jorge Lorenzo’s second title defense could be a little too reminiscent of his previous one in 2011.

Dani Pedrosa was once again fastest on the final day of testing at Sepang, topping the timesheets for the fifth time in six total days of testing at Sepang. Though the Repsol Honda man looks to be the pre-season favorite so far, he does not leave the test as fastest overall, however. That honor goes to Jorge Lorenzo, who put in a scorching lap on Wednesday to set the fastest time over all three days of the test.

The riders got off to a late start on Thursday, rain meaning that the bulk of the riders kept to their garages until the track started to dry out at the end of the morning. A few men put in laps in the wet, but once the track dried out, enough riders started putting in laps to clean the worst of the dirt left by the rain from the track, though track conditions were never as good as on the first couple of days.

Pedrosa soon took charge of proceedings, later knocking another half a second off his time late in the afternoon. Rookie Repsol teammate Marc Marquez impressed yet again, taking 2nd on the timesheets with his very last lap, after the final 30 minutes of the session turned into a qualifying session.

Marquez continued to concentrate on learning the ropes on a MotoGP machine, and the longer runs he put in were a little further off the pace of Pedrosa, and still not as consistent as they will need to be, but he proved with his flying lap that he will be starting from the front of the grid by the time the season starts.

Jorge Lorenzo ended the final day of the test with the 3rd fastest time, but leaves Sepang as fastest overall. Lorenzo’s best time was over four tenths slower than Pedrosa’s on Thursday, but the Spaniard spent the latter part of the day working on race set up, ending the test with a mightily impressive race simulation of 20 laps, 16 of which where in the 2:01s, most of them fast 2:01s.

Lorenzo’s race simulation follows the pattern from his championship-winning season in 2012, making a very long race simulation to test the bike and himself in punishing conditions. Less characteristic was a mistake the Spaniard made, putting in one lap of 2:05 towards the end, an anomaly among the scorching laps that surround it.

Jorge Lorenzo has topped the second day of testing at Sepang during the MotoGP class’ second visit to the circuit, the factory Yamaha man finding the three tenths of a second he was seeking on day 1 of the test. Lorenzo was quick right out of the gate, setting a blistering mid-2:00 lap on his first exit, a time nobody would better except himself before the afternoon break.

Even more impressive than his time is his consistency, however: Lorenzo is seemingly able to crank out mid-2:00 laps at will. The Spaniard’s performance so far has been eerily similar to the test last year, where he laid the foundation for his 2012 title by grinding out lap after lap at race pace.

With Lorenzo on top of the timesheets, Dani Pedrosa was forced to settle for second, over a third of a second behind his main rival for the title. Pedrosa had spent most of the day working on suspension settings for Honda RC213V, but had been hampered by a problem with one of his bikes. Tomorrow, he told reporters, his team would try to put the best of what they’d found at the test together.

An impressive Cal Crutchlow set the 3rd fastest time of the day, the Monster Tech 3 Yamaha man six tenths off the pace of Lorenzo on the factory bike. The lap by Crutchlow is close to his best time around the Malaysian circuit, and given the disparity between his satellite-spec M1 and the factory bike of Lorenzo, all the more admirable.

Dani Pedrosa has taken up at the second Sepang MotoGP test where he left off after the first. The Repsol Honda man led for most of the day, having set a fast time fairly early in the morning. His rival at the Factory Yamaha squad did much the same, Jorge Lorenzo taking 2nd a couple of tenths behind Pedrosa.

Marc Marquez continues to impress, the Spanish prodigy ending the day with the 3rd fastest time, just over a third of a second off his Repsol Honda teammate, and a little over a tenth behind reigning world champion Jorge Lorenzo.

Also impressive was Stefan Bradl, the LCR Honda man achieving his stated aim for the test of matching the pace of Valentino Rossi. The strong times by Marquez and Bradl demoted the Factory Yamaha returnee to 5th, though the difference was minimal, just a few hundredths separating the threesome.

After an absence of some three weeks or so, the MotoGP teams once again return to action at Sepang for the second official test of the pre-season. The intervening period has seen a flurry of activity in the factories in Japan and Italy, and at CRT team headquarters around Europe.

The data accrued on the first visit to the Malaysian circuit has been analyzed, assessed, and more modifications made and ideas worked out for the second Sepang test. So what can we expect to see in Malaysia for the next three days? And what are the key details to keep an eye on?

It is hard to believe, but it has been eight years since Valentino Rossi raced a Yamaha in liter capacity in MotoGP. Without even getting into the 800cc era that started in 2007 and ended in 2011, it is safe to say that a lot has changed since Rossi’s 2006 Yamaha YZR-M1 and the still unofficially debuted 2013 Yamaha YZR-M1.

While we already have a pretty good idea what was under the fairings of Rossi’s 2006 M1, since Yamaha Racing made detailed high-resolution pictures of the machine publicly available, what lies beneath the fairings of MotoGP’s current crop of prototypes is a closely guarded secret.

That secret must not have been guarded closely enough though, because the eagle eyes at GPone have gotten a photo of the Jorge Lorenzo’s M1 in the buff, and the Pride of Iwata has some interesting secrets to share with us.

Joy, determination and despair. If you had to choose three words to describe the first test of the 2013 MotoGP season, these are the words you would choose. Joy: for Valentino Rossi and his crew at finally having a bike that Rossi can ride and his team understand how to work with; for HRC, at seeing both their hopes and their expectations of Marc Marquez’ ability confirmed; for Bradley Smith and Michael Laverty, at making such rapid progress on their early days in the class.

Determination: for Dani Pedrosa and Jorge Lorenzo, both working hard at preparing for their assault at a title, which either could win. For Marc Marquez, focused on learning everything he can to add the consistency he needs to his raw speed, if he is to match Pedrosa and Lorenzo.

Despair: for the factory Ducati riders. Sepang showed the bike is uncompetitive, and with few avenues left to explore with the machine in its present state, despair at knowing they have many months of hard, dispiriting work ahead of them before they can even start to turn the situation around.

The first test of the 2013 MotoGP season is completed, and Dani Pedrosa has completed a clean sweep, topping the timesheets on all three days. The Repsol Honda man confirmed his role as title favorite by posting a fast lap under the existing pole record set by Jorge Lorenzo last year.

He also opened-up a serious gap to the trio who have been chasing him all test long, putting nearly a third of a second on Jorge Lorenzo, the Yamaha man falling just short of his own pole record. However, what may worry Lorenzo more is the fact that Pedrosa declared at the end of the day that his objective was not to be fastest, but test the bike.

Valentino Rossi closed the gap to his teammate, ending the test a tenth from the time set by Lorenzo, though still four tenths from Pedrosa’s best lap. Rossi also leapfrogged over Marc Marquez, finally finishing ahead of the Repsol Honda rookie after ending the first two days behind him. Marquez finished as 4th fastest, six tenths behind Pedrosa, and the young Spaniard also had his first crash of the season, losing the front end on the way into the final corner. Marquez walked away unhurt, his Repsol RC213V did not fare quite so well.

Dani Pedrosa topped the timesheets once again on the second day of prototype testing at Sepang, the Repsol Honda man getting off to a flying start and cracking into the 2’00s early in the session. He was joined there by Jorge Lorenzo, the Factory Yamaha rider once again shadowing Pedrosa, ending the day just two hundredths behind the Repsol rider.

Marc Marquez confirmed his first day times were no fluke, the only other man to post a lap in the 2’00s, though the rookie was a quarter of a second slower than his teammate on Wednesday, losing a fraction of the ground.

Valentino Rossi once again took 4th spot, the Italian still just under half a second off the two title favorites. The Honda men continued to work on engine durability, while Yamaha riders Lorenzo and Rossi had new engines with more acceleration to test, and a new chassis aimed at curing the pumping from the rear wheel of the bike.