Bob Barnard Track Engineering

Exhaust blown diffusers employing fuel ignited in the exhaust pipes are to be banned in F1 from Silverstone onward. It has only recently been explained to most of us mere mortals that there are two types of blown diffusers. The original one cut the fuel and ignition on braking but kept the engine turning over so gas flow remained over the diffuser. Otherwise the extra downforce went away during braking which is not a desirable outcome. This is "cold blown" and as I understand the FIA stance is acceptable. What someone, probably Adrian Newey, worked out was that hot gas worked way better, so cut the ignition but keep the fuel flowing which now ignites in the hot exhaust and gives a large increase in downforce. This uses a lot more fuel, not very green, and can only really be used freely in practice and qualifying as the cars do not have enough to waste like this in the race, which might explain why Red Bull has a big advantage in qualifying which disappears in the race.

I think the FIA were struggling to find a way under the current regulations to ban this and so have come up with the "movable aerodynamic device" deal, the movable piece being the drivers right foot when he takes it off the throttle. Stretching a bit here I think, as does Red Bull who are not happy. They say they need the fuel flow to cool the valves. Funny they did not need it till now? Like all smart ideas it is very expensive and once discovered will be banned.

Lewis is off today playing car swaps with Tony Stewart who was a great open-wheel driver before switching to NASCAR and should enjoy the McLaren around Watkins Glen. Not sure Lewis will enjoy that tractor called a NASCAR. Let's hope they are not on track at the same time, they are likely to run into each other. Lewis' management denies looking for a new ride for Lewis, but this reminds me of Senna leaving McLaren because Williams had a car he could win in. Some odd characters in the McLaren garage and hospitality by all accounts, as one journo said "you can see where Lewis' head is at right now." What does Ron make of all this?

In all the excitement of the Le Mans 24 Hour a couple of things went unsaid. Aston Martin put on a worse display than the Jaguar last year and heads should roll for it. I don't know if the Audi engine guy is right in saying the engine configuration is all wrong, but something is badly wrong at Aston when you cannot do more than three laps in a 24 Hour race! They came out before the race and said that they would probably not last beyond 12 hours, what a great ambition. I know everyone will say its a new car, but both the Audi and Peugeot were new cars this year, the Audi only running one 6 hour race prior to this, and they managed very nicely thank you. It is not as if the Aston was ever on the pace when it was running, which for an engineering company is a sad indictment.

The other story is the ongoing problem of equality between petrol and diesel. The petrol cars were never in the race, way off the 2% and the faster refueling did not help much as the gravity fed flow could not match the increased size of the hose, nice one ACO. Now the diesel guys will keep saying it is because there is no one running a petrol car as seriously as they are, and if there was you would see it up there with them. There is some truth to this, we have not seen a similar effort with a petrol car, but just maybe it is because they know the current rules make it a waste of money?

The quote of the weekend was "it is a week's holiday at the end of which they run a race." And what a race we were treated to this year! Xan and I both had no trouble staying awake for the 24 hours. Fourteen seconds separated first and second, Audi and Peugeot, at the end of 24 hours. There have been closer finishes, but all staged. A slow down lap was added after the 24 hours were up as the last lap was full out racing, not the usual parade for the cameras.  You could say the race was won by the length of the pit lane, as that is what it came down to with both cars stopping with about 30 mins to go, the Peugeot just for fuel, the Audi for a dash of fuel but then new tires, so a longer stop and he got out 6 seconds in front, thanks to the Peugeot being at the opposite end of the pit and Audi being close to pit out.

All four classes saw some great tussles, most of them cleanly fought. I'm not sure I am happy about the antics of the Peugeot drivers, despite their claims they were innocent and it was down to bad visibility out of the closed cockpit cars. Davidson and Gene knew all too well where the Lotterer Audi was and being laps down on the Audi should have have had more respect for the leader. It is one thing to make things hard for the overtaking car, it is another to deliberately move over on him on a straight piece of road after you have just collided in the second chicane on the Mulsanne Straight. We had already seen all to graphically what happens when a car moves over on another at those speeds, and I for one expected better from Gene. I still have not forgotten Davidson putting the Corvette into the wall at the Porsche curves.

Yes the Audi guys were aggressive too, they had to be, and the changes to the rules had an unintended consequence. The ACO reduced engine size and air intake size to slow the LMP1 cars down, but in the usual fashion the engineers worked out how to recover some of that speed by reducing drag, and therefore downforce. So the cars were more on the limit when it came to cornering and avoiding traffic, and needed to keep up the momentum, so they took chances and had less control when they did not work out. We saw two massive accidents to the Audis which thanks to the design of modern cars both drivers survived with virtually no injuries. As I said a week or so ago, car design is where safety has improved. The walls and tires did their job too, especially for McNish's accident where there were a lot of marshals and photographers. We had two long safety car periods to repair damaged guard rail, and great job by the track to get it fixed, but it showed why I prefer concrete as the hits in the Porsche Curves with the Corvette and Ferrari required no repairs at all. Guard rail is made to give, and is probably a bit better for the drivers in that respect, but McNish almost went over the guard rail perhaps due to the fact it did give and provided a ramp?

Unlike almost any other form of racing Le Mans does not red flag a race except for exceptional rain or fog, so we saw a one hour and a two hour procession. They have three cars due to the length of the track, and this makes for some interesting strategy. The race goes on, albeit at a reduced speed, and a lot happens. Drivers make mistakes due to cold tires or boredom, teams with a slower driver take advantage of this time to put him in, therefore meeting the time requirements for drivers but not losing any time. Refuelling stops have to be made and tire changes can be done without the normal loss of time, but who is behind which safety car has to be considered, and when to stop. At the start of the period, yes if you are low on fuel, or at the end to maximise your next run and if you actually wait until the final moments you can actually make time as you can leave under green without waiting for the next safety car. Great strategy games.

The strategy between Audi and Peugeot was fascinating. This year Audi were the fast cars but used more fuel, so more pit stops. So which was better, a fast pace and more stops or a slower pace, relatively, and less stops? As it turned out there was no difference. 14 seconds in 24 hours, 0.016%! Tire wear also played a part. Audi, despite running faster could run four or five stints between tire changes, and the poor drivers did those stints too! The Peugeot although slower could only run three and sometimes four stints. Either way they ran about twice the distance on one set of tires as F1 does on three or four, so who's green?

The standards applied by the Stewards both here and at Montreal make me scratch my head. Robert Kaufman who made contact with Rockenfeller in the Audi in the dark and when taking the racing line, as the slower drivers were told, is ejected from the race. Gene who deliberately moved Lotterer over almost to the barrier in broad daylight while racing with him and on a straight does not even get called to the Stewards! Hamilton gets called to the Stewards in Montreal and Button who took him and Alonso out while winning the race does not? Now, that is probably due to the past problems of Hamilton as much as anything, but it is still inconsistent.

I did not see too much of the Canadian GP. After getting up at 5:30 on Saturday and staying awake until 7:30 Sunday and being emotionally wrung out by the Le Mans race, I went to sleep and set the alarm for Montreal. Speed had given the race over to Fox who dd their usual stellar job, starting the coverage as the race started despite a paid for ad being on the half hour prior, and thankfully for them it was behind the pace car due to the rain. I got up for this? We had the usual BS from Bob Varsha and the boys. This is network so we must have a whole lot of new viewers who know nothing about F1 so we have to talk to us like we are children. Then we start, and it is all crazy, Hamilton more than most, and the outcome was all too predictable. I personally thought Button put him in the wall, but I guess his explanation stands up, that would have been out of character. Then we had the red flag, so I gave up and went back to sleep. I wrongly thought Fox would give up after the mandatory two hour broadcast but apparently no. I'm glad I did not wait up though. I have read it was an exciting race, but from what I have read it was a crap shoot. Give me Le Mans every weekend.

The coverage of Le Mans was great. I had Radio Le Mans on one computer so had all the action and information on what was happening, not a load of infomercials, FromsportCOM.com live streaming on the TV via the other computer, and SPEED if I needed it, when they were actually on and following the action. The Eurosport Director went to the same school as the SPEED guy, he would at times rather show someone asleep in the pits or media center rather than two cars racing their hearts out.

Needless to say I did not watch the MotoGP or the WSBK, both predictably won by Casey Stoner and Carlos Checa respectively. Great gutsy ride by Colin Edwards though.

Finally a word about Lewis who is reported to have met with Red Bull's Christian Horner at the weekend. A very smart man, Warren Willing, told me years ago that when a rider or driver is struggling with a slow machine one of two things will happen. Either he will get depressed and stop trying, or drive over aggressively and crash. This seems to be the consensus for Lewis' problems at the moment. The McLaren is almost there, but never quite there when it comes to beating the Red Bull, so he tries to make the difference up by driving harder. It cannot be easy to watch Vettel in that car and know you could be there too.  Something needs to change before his career will be remembered as a great talent wasted. Maybe a change of team is it?

It took Kimi to make me watch the NASCAR Camping World Series! Me and a lot of others I suspect. Watching him out on a mile and a half tri-oval for the first time I thought he did really well, although the truck was so loose it looked like rallying at times. Still, his reflexes and ability kept it on the track and tonight's race should be fun. You have to admire the guy, just like the old days when F1 drivers drove everything and raced every weekend, sometimes two races a weekend in Europe and America. F1's loss is the world's gain.

The really big news of the weekend for me is the ACO moving to live up to it's regulation on parity between the diesels and petrol cars. Petrol cars will have an air restrictor increase of 0.3 mm and can lose 10 kg, and if they cannot take weight off the car then they get a 0.5 mm increase. In addition the fuel hose for the petrol cars is increased by 10 mm, nearly half an inch, and the diesels decreased by 0.3 mm, so faster refuelling for the petrol cars. The ACO have made the changes after seeing all the new cars in action at Spa for the first time, and believe they will allow the petrol cars to do an extra 5 laps during the 24 hours. The older ORECA Peugeot benefits from a 15 kg weight reduction. It will be interesting to see how all these pan out in a few weeks time.

F1 is in Barcelona and not much has changed, Red Bull and McLaren on top with Alonso and Ferrari fifth. Mercedes big step forward has not improved their position. News is that Williams are the team that pushed the FIA to act on the engine mapping, but it seems that Cosworth are the problem in not being able to match the big guys. The top teams are of course resisting any changes, as they are the new engine for 2013. The opposition to the change to 4 cylinder turbos is growing, with Renault apparently the only manufacturer now in favor, for obvious reasons. Talking of Renault, the big rumor from Barcelona is that Kubica has signed to drive for Ferrari, the latest in a long line of drivers similarly rumored to go there. Massa must be feeling very unloved, despite Montezemolo telling the world Massa will drive for them next year. He did not look very happy with the car during practice.

The gap between the teams seems to be growing, with HRT still 7 secs off the pace, but then Lotus and Force India are around 4 secs off, and so on up the order. Alonso is a second off, and you quickly get to 2 seconds around tenth place. On these times the HRT are in danger of not making the cut at their home race, but I guess with Q1 times on hards they may make it. Lotus seem to have made the jump across the gap to the midfield teams, only to see the front of the pack just as far away as ever.

Not me, Joe Saward. Joe has decided that as there is so little going on he may as well stop blogging for a couple of weeks. Well I am not stopping except for Christmas and New Year, but excuse me if the news is slim to none.

There are still important items like Petrov being confirmed at Renault, can't quite get used to Lotus Renault yet. That's a good move, and let's look forward to a really competitive car again from them, Kubica certainly deserves it.

It seems the residents in the area where the Rome F1 street race is supposed to be staged are not very happy with the prospect. A very good Italian friend of mine suggests there is more to this story than an F1 race, in fact it has little to do with an F1 race, so let's see how this plays out. Mr. Flammini is a close relation to Machiavelli.

The ACO has released next year's Technical Regulations with the all important "performance leveling" clause that lets them adjust the weight, restrictor size etc to keep the petrol cars within 2% of the times of the diesel cars. Now I know us fans want to see close racing, but this smacks of going down a spec racer path. Sports cars are seen as the last bastion of technical innovation now F1 is so restricted, and I would say many of its fans do not want this stifled. The promotion of new technologies is also the much sought after "green" racing, so why penalize Peugeot and Audi for introducing the diesels ? Let's encourage the petrol cars to improve. What's to stop the diesels from sandbagging in the early races to make sure they stay within two seconds, or just take their bat and ball home if they are not winning? They have invested a lot of money to get to this point, much more than Aston or the other petrol cars I would suggest. When Ford GTs and Ferraris were slugging it out in the sixties did anyone suggest it was unfair on the others? No we just enjoyed the fight. And when the Porsche 956 and 962 were the only car to have, did we complain? Le Mans is always about different classes of cars competing on the same track, so what is wrong with the diesel and petrol classes?

There is also the gentleman racer bit in the LMP2 class and two level GT class. OK to have two levels there I note. Gentlemen racers, i.e. amateurs, usually rich amateurs, have been part of Le Mans forever, think back to the "Bentley Boys." They pay for the cars that pros drive, and make for an interesting strategy mix. Now there are probably some that should not be out there, and that is why there are license standards. Now when I read the reported rules for GT Pro it says that the class is unrestricted whereas the Amateur class must have one gentleman driver and a year old car. So does unrestricted mean just that, it can also be a one year old car and a gentleman, or does it mean three pro drivers and a new car, and who is paying for it? And oh yes, we have performance leveling there as well. Why? It has been the closest fought class for many years now between makes, what do they think will change?

Ducati are concerned with Rossi's potential fitness problems during the testing for next season following his shoulder injury. The interview with the team principal seemed very weird to me, suggesting they would limit his miles on the machine. Surely that is the best way to improve his fitness?