Hello and good morning from sunny Jerez where day two of the first pre-season F1 test of 2015 is about to get underway.
Yesterday Sebastian Vettel was quickest, but if we were handing out prizes in testing (which we don't) then first place would go to Mercedes for the 157 laps Nico Rosberg completed on the first day of running in the new W06.
That was over two race distances in one day with no major issues at all. Mercedes technical boss Paddy Lowe was understandably pleased and said he could not think of any downsides to yesterday's opening day.
@playlife: They can bring as many cars as they like, but they are only allowed to run one on track.
However, at this stage of the season, I'd be surprised if any of the teams had a second car ready to run. It's not uncommon for teams to bring last year's car just in case - in fact we know a Red Bull RB10 is here even though the RB11 was on track yesterday.
Red Bull's first day wasn't without issues, however. In the morning a battery problem led to a rear brake issue and then another power unit-related problem saw a plume of smoke come from the rear before the car returned to the pits. After that we didn't see Daniel Ricciardo return to the track.
@ImaRedBull: First of all, nice avatar, but to answer your question: no, no limit. Each test day is limited to eight hours here (9am-5pm) but the teams can complete as much mileage as they like over the 12 days. Drivers can do as many days as they like as well, but most teams split testing evenly between their two drivers (and sometimes give the odd day to a test driver).
@playlife: It's true that they didn't have a second car, but the problem was an electrical one with the power unit. There's no guarantees that a second car wouldn't have left the garage and had exactly the same problem. The team is confident they can fix it for today but are not ruling out another issue popping up elsewhere.
@surendran: The Lotus is here but it still needs to be built up. The team admitted there would be "no significant running" until Tuesday, but I suppose that doesn't rule out an exploratory lap later today if they get it bolted together.
Vettel, Hamilton and Nasr are the first three drivers on track.
As planned, Vettel is back behind the wheel of the Ferrari this morning and Kimi Raikkonen will take over for the last two days of the test.
@SpittingCobra: Next to nothing, if I'm honest. It was set on medium tyres and was a solid time to set on the first day of testing, but we shouldn't start handing out trophies just yet.
Kvyat is also out on track in the Red Bull, meaning the Renault issues have been fixed overnight.
Button heads out in the McLaren meaning the team has indeed found a solution to the problems is suffered yesterday.
The Honda engine does sound distinctly different to the others, especially at low revs. But we might have to wait a while before we hear it being pushed hard.
@SpittingCobra: I wish! Sadly not. It's pretty tricky to get a proper reading of true maximum power outputs. Renault claimed 850bhp from engine and ERS in its 2015 press kit.
Nasr, Hamilton and Kvyat on track now. Bottas has also been out for an installation lap in the Williams.
@NikhilDuki: Ferrari is the only team that has the pull-rod suspension (that we've seen so far). The team has used the same system since 2012 and has been refining it ever since. It can make it harder to find a perfect set-up, but it does bring aero advantages that the team believes outweigh the negatives.
@SpittingCobra: There's been a lot of talk about that already. Obviously the nose has a big impact on the rest of the car behind it aerodynamically and there is a clear division. The shorter noses have apparently been harder to crash test, hence Red Bull's last minute go ahead, but the top teams will have all tried a number of concepts. However, Red Bull wouldn't say if they'd stick with there's and a few others have been coy about what will come in the future.
We have our first two lap times of the day on the board. Hamilton has set a 1:24.803 and with it caught onto the tail of Nasr's Sauber which has set a 1:28.817.
Note the little bulge on the nose of the McLaren. But don't worry, it's not permanent, just a housing for a measuring/testing device.
@Rahulan: The nose is probably the biggest change in the regulations this year. It has to go even lower and the rules have changes so as to avoid the long finger solution seen on a few cars last year. The opening up of performance changes on the power units is also big and the manufacturers are now allowed to use variable length inlet trumpets.
@KiwiBjorn: The tyres are unmarked - i.e. no hard, medium, soft or super-soft markings. That usually means they are a development compound.
@Siddhesh: Most likely quite different. The teams are keen to introduce developments ahead of Australia..
Button returns to the pits after another lap in the McLaren.
@vinayak: It's probably a bit too early to be jumping to those conclusions. But he does seem to be very happy in his new job.