I don't seem to have typed out the words Red Bull or Daniel Ricciardo much today, so I should probably check in with them.

The Australian has very quietly got on with putting up 94 laps in the RB11 today, although his best time of 1:25.742 is good only for seventh place.

He's has not, however, indulged in any soft-tyre laps, so when he does you can expect the Red Bull to climb the order.

Image source, Getty Images

Mercedes have completed their "experimental" set-up work and Lewis Hamilton is out on track for the first time in a good few hours.

He's on the medium tyre and does a 1:30.327 followed by a 1:26.686.

We'll watch the progress of the experiment with interest...

Image source, Mercedes

Force India on Twitter:, external "That's a century! 100 laps on the board for Nico who keeps putting mileage on the VJM08. And on he goes..."

Image source, Getty Images

"Carlos Sainz and Kimi Raikkonen are both doing race simulations and were running fairly closely together on the track. Sainz was ahead, but Raikkonen closed in and overtook him."

Toro Rosso tweet:, external "Laps and more laps. This is the 80th time that @carlosainz crosses start/finish line. More to come, this is testing!"

Image source, Toro Rosso

Kimi Raikkonen's race-simulation work for Ferrari has made him the first driver to stampede into three-figure territory.

He's on 106 laps and still the figure is climbing. With two and a half hours left in the day that Ferrari could truly clock up some serious mileage today.

The Force India of Nico Hukenberg is also about to bring up lap number 100.

Andrew Benson
Chief F1 writer

"Ferrari's Kimi Raikkonen appears to be on a race-simulation run this afternoon. It will be fascinating later to compare his times with those of Hamilton and the two Red Bull drivers last week."

Damiano has been in touch using #bbcf1 and points out that there may be pictures to rival the earlier one of Graham and Damon Hill. The below example being one of them.

He's probably right.

Reading left to right, we have Bruce McLaren (100 grands prix, four wins), Stirling Moss (66 grands prix, 16 wins), Tony Brooks (38 grands prix, six wins), Graham Hill (two titles, 176 grands prix, 14 wins), Jo Bonnier (104 grands prix, one win) and Wolfgang von Trips (27 grands prix, two wins), with young Damon (one title, 115 races, 22 wins) at centre, on 17 July 1961.

That's three world titles, 511 races and 65 wins right there, folks. #calculator

Tragically, Ferrari driver Von Trips would die less than two months after this photograph was taken, killed in an accident at Monza while leading the championship. His team-mate Phil Hill went on to take the title, with Von Trips a posthumous runner-up by one point.

Image source, Getty Images

"Williams technical boss Pat Symonds talked with the media this afternoon. He is pleased with the progress that Williams has made in winter testing.

"He said: 'So far it has gone quite smoothly. As the testing restrictions get harder and harder you have to become more and more disciplined in the way you test. You have just 12 days to cover all the reliability, all the systems, and start looking at performance. Thus far it has gone absolutely on plan - we have not had to change anything. We have got through all the work we planned to do by this stage. We have not spent a lot of time chasing performance in the car. In fact in the first two tests, absolutely nothing in the performance way. At this final test we are now just starting to exercise it a little bit and see what we can get out of it. It looks reasonably promising at the moment. There is still a way to go.'

Henry Evans: "So merc are still in a league of their own... BUT can't wait for the battle behind! Ricciardo vs Vettel vs Bottas = Tasty."

Michael Powell: "V impressive reliability from Force India after only starting to run 2015 car yesterday. Dark horses for a good points haul in Aus?"

David Boyle: "Towards the end of tomorrow's testing, McLaren to turn the Honda engine up to full capacity and set the fastest lap."

Peter Smith: "I've always supported McLaren and look forward to the new Honda partnership, but that Force India looks amazingly improved, well done."

Heath Brett: "Shame the Mercs look so far ahead again, and I can't see any epic battles between Rosberg & Hamilton to liven things ZZzzzz!!!!"

"Christian Horner has headed off on a motor scooter. He's no doubt going out around the circuit to see how the Red Bull RB11 goes through the corners."

Mercedes reported in the hour before lunch that they would be making some "experimental set-up changes" before hitting the track again.

Well, whatever that experiment is it's still ongoing.

They've now lost 90 minutes of track time to it and Lewis Hamilton remains mired on just 36 laps for the day. For comparison, Kimi Raikkonen has put up 78 laps and counting for Ferrari.

Image source, Getty Images

Just returning briefly to Graham Hill and Damon Hill.

There is of course only one picture that truly epitomises the only father and son to each become F1 world champion, and it's this cracker from 1964.

Image source, Getty Images

Ben Edwards
BBC F1 commentator

"Some puffs of what looks like oil smoke from back of Lotus on this lap."

Ben Edwards
BBC F1 commentator

"I'm just in front of the McLaren garage. Magnussen was due to come in and go straight out (they moved me out of way) but then he stopped just before the box, they had to wheel it back in and fluid had leaked onto ground which they're now cleaning up. Looked more like coolant than oil but not sure."

"Also just beginning to see some clouds forming overhead after a beautifully clear morning."

Williams tweets:, external "Pat confirms the #FW37 is white and blue not #blackandblue or #whiteandgold although it has got some red #bandwagon"

Image source, Williams

It's been a slow-burner since the restart.

Felipe Massa is doing a long run on the hard tyre for Williams, while Kimi Raikkonen is also going long for Ferrari on the medium.

Kevin Magnussen in the McLaren briefly joined them but came straight back into the pits.

"Romain Grosjean talked with the media during the lunch break. The 2015 Lotus is a much better car than last year's E22. 'You can push it hard trying to find the limit,' he said."

Image source, knutson

This one didn't fool too many either.

Graham Hill, the world champion of 1962 and 1968, sits astride his motorbike as he chats with son Damon, who would become champion himself in 1996.

Dan Brown ‏was among those to get in touch with the right answer. He also correctly said the pic was taken in 1975 AND that the bike is a Bultaco Alpina (I'll take your word on that one).

Image source, Getty Images/Allsport

Lunchtime is over kids. Back to it.

Felipe Massa, quickest this morning, bounds straight onto the track like an eager puppy.