Tag

aerodynamics

Browsing

At the launch of its 2017 MotoGP team, Ducati CEO Claudio Domenicali confirmed to the assembled press that the Italian marque was working on a V4 superbike, which echoes the rumors we have heard over the past two years. 

It shouldn’t surprise readers to hear that the model’s development comes directly from Ducati’s work in MotoGP, which is based around the 1,000cc 90° V4 engine that currently powers the Ducati Desmosedici GP race bike.

“The engine development we have made in MotoGP is exceptional,” Domenicali told our man David Emmett at the MotoGP team launch. “We have an engine which is very reliable, very light, compact and has a lot of interesting technology. We are seriously thinking of introducing it to regular customers, because it is a masterpiece of engineering.”

“Of course, translated into a something that can be sold for a reasonable, if not premium price,” Domenicali added. “So, it will not be a kind of exotic bike like the Desmosedici, but a more regular high-end sport bike.”

The FIM is taking further steps to contain the cost of aerodynamics. The banning of winglets decided earlier this year was made on two grounds: removing the danger of being struck by a protruding wing, and reducing the potentially astronomical cost of an aerodynamic war beginning.

Banning winglets would prevent the first issue from being a problem, but would do nothing to address the second point. Indeed, with the aerodynamics cat well and truly out of the bag, the factories have already hinted that their focus would switch to fairing design.

The Grand Prix Commission have moved to stop that war starting before it begins. From 2017, factories will have to homologate fairing and front mudgard designs, with only one upgrade to each allowed per season.

The idea behind it is to allow factories to continue to develop aerodynamics, but to limit the amount of time and money spent in search of wheelie prevention.

The rules do leave one loophole open, however. The aerodynamic homologation rules apply to each rider separately. In theory, each rider on a Yamaha, Honda, or Ducati could start with a different fairing, the results of which could be assessed by the factory to help develop the next homologated version of the fairing for use in mid-season.

The aerodynamic rules for the 2017 MotoGP season and beyond have been published.

At a meeting of the Grand Prix Commission at Misano, a proposal from Dorna’s technical team was accepted, banning aerodynamic devices in as general a wording as possible. Wings, bulges, and anything protruding from the front of the fairing are now banned.

The proposal was drawn up by a small group consisting of Director of Technology Corrado Cecchinelli, Technical Director Danny Aldridge, and Race Director Mike Webb.

From Silverstone to Misano: it is hard to think of a starker contrast in circuits. Silverstone sits atop a windswept hilltop in the center of England, surrounded by verdant valleys and ancient villages. Misano nestles just above the vast string of late 20th Century hotel blocks, which form Italy’s Adriatic Riviera.

Silverstone is often wet, and usually cold, no matter what time of year we go there. Misano swelters in the heat of a late Italian summer.

The tracks are very different too. Silverstone is a vast, sweeping expanse of fast and challenging tarmac. Misano is a tightly compressed complex of loops demanding more of fuel management, than of the rider.

Silverstone has old, worn, slippery tarmac with huge bumps rippled in by F1 and other car racing. Up until 2015, Misano was much the same. But it was resurfaced last year, and has fresh, dark, smooth asphalt that has a lot more grip than the old surface.

So the MotoGP riders face a very different kettle of fish a week after Silverstone. The layout of the track is likely to have the biggest impact.

Where Silverstone is full of fast third and fourth gear corners which riders enter carrying a lot of speed, most of the turns at Misano are all first and second gear. Drive and traction are the watchwords, though there are three or four corners where braking is at a premium as well.

It’s the Sachsenring all over again. Or almost: when the MotoGP bikes were here in July, air temperatures were in the low 30s, and track temperature was around 50°C. During FP1, the air temperature was just 9°, and track temperature was 14°C.

“The temperature this morning was pretty extreme,” Jorge Lorenzo said after practice was over. “Only a few times in my life have we been riding in such cold conditions.”

Cold temperatures meant cold tire crashes, especially in the morning. The most obvious was Dani Pedrosa’s crash, who fell at Turn 9 as he touched the front brake, the front folding as if the track were wet.

The crash caused the session to be red-flagged, as Pedrosa’s Honda ended up puncturing the air fence and landing on top of the tire barrier.

The crash seemed to be a warning of the excesses of tarmac run off, but Pedrosa was happy that there wasn’t a gravel trap at the edge of the track. “I crashed in fifth gear, so I was going very fast,” Pedrosa said.

“From one point of view I think, most of the run-off area was asphalt so maybe the bike didn’t decelerate enough. But on the other side I was very lucky it was only asphalt, because I crashed so fast that if I went into the gravel I would have tumbled over and over with a lot of speed.”

There are upsides to asphalt run off sometimes.

One factor which could be having an effect on tires is the aerodynamics war which has seen wings sprouting from every forward surface of the fairing.

The outbreak of strake cancer has seen the winglets massively increase in size and surface area, making the latest version on the Ducati Desmosedici GP resemble Baron von Richthofen’s Fokker Dr.I triplane.

Ducati was the first to understand and seize on the potential of the aerodynamic winglets, debuting them at Qatar last season. There were met with some skepticism for most of last year, until Yamaha suddenly rolled out their own version of them at Aragon.

In 2016, the winglet craze has infected the entire paddock, with the bikes of all five manufacturers now sporting some form of aerodynamic device.

Why did Ducati start fitting winglets? Because they work. One engineer who has seen the data told me that the effect was visible in it. The bike wheelies less when it has wings fitted compared to not having winglets.

That reduction in wheelie means that wheelie doesn’t have to be managed using the electronics to reduce power and torque. That, in turn, means the bike can accelerate harder out of the corner, reaching higher top speeds at the end of the straight.

The other manufacturers have all come to the same conclusion, hence the outbreak of winglets.

Winglets are to be banned in all three MotoGP classes from 2017 onwards. At Assen, the Grand Prix Commission met and decided on an outright ban on aerodynamic wings, after the MSMA had failed to reach an agreement among all manufacturers on a joint proposal.

There has been much discussion of winglets over the past few months, as they have taken on an ever greater importance. With the introduction of the common ECU software, winglets were one way of reducing the amount of wheelie MotoGP bikes had.

But as the factories – and especially Ducati – gained more experience with winglets, the winglets grew larger, raising safety concerns over the effect of an impact during a crash.

Action had been expected to be taken at the previous Grand Prix Commission meeting in Mugello, but the parties failed to reach an agreement.

The disadvantage of reporting on your home race is that during the media debriefs, the period when riders speak to the press, they turn to you and ask, “So what’s the weather going to do?”

Living in The Netherlands, Assen is my home race, and so this weekend, it is me they are asking about the weather. There is only one honest answer I can give them. “This is Assen. Anything can happen.”

The weather has been a constant topic of discussion. Weather apps and weather websites have been compared, and each of them says something different. Some say it will only rain heavily on Sunday. Others say Sunday will be dry, and the rain will fall on Saturday.

Check another site, and it says rain overnight, but only heavy clouds during the day, with the risk of rain at a minimum. Which site to believe? This is Assen. Anything can happen.

There was a sense of nervousness in both FP1 and FP2 for the MotoGP class. Riders pushed late to chase a lap good enough to put them into the top ten, and automatic entry into Q2.

Some, like Bradley Smith, got their strategy wrong, went out on a hard rear tire instead of a medium, and ended up languishing down the order. Others, like Dani Pedrosa, were just having a dismal time. “No improvement from FP1 to FP2, no improvement on different tires, and no feeling with the bike.”

For sheer, stunning beauty, it is hard to beat Mugello. ‘Nestling in the Tuscan hills’ is an overused cliché precisely because it is so very true.

The Mugello circuit runs along both sides of a beautiful Tuscan valley, swooping up and down the hillsides as it flows along the natural contours of the land. Like Phillip Island, and like Assen once was, it is a truly natural circuit.

It does not feel designed, it feels as if it was left there by the raw overwhelming natural forces which hewed the landscape from the limestone mountains, discovered by a man with a passion for speed, who then proceeded to lay asphalt where the hand of nature dictated.

It is fast, flowing and challenging. It demands every ounce of speed from a bike, and courage from a rider. It lacks any really tight corners, keeping hard acceleration in low gears to a minimum. Corners flow together in a natural progression, with a long series of left-right and right-left combination corners.

The riders call them chicanes, which they are only in the very strictest sense of the word. In reality, they are way, way too fast to be what fans call chicanes, more like high-speed changes of direction.

What they do is allow riders to line up a pass through one part of a turn, and the rider being passed to counter attack through the second part of the corner. That makes for great racing.

They say that there are only two certainties in life: death and taxes. There are also two certainties in MotoGP so far this year: at every race, Michelin will introduce yet another new tire, and the Ducati Desmosedici GP will sprout a new set of wings.

For Le Mans, Michelin brought a new rear tire, with a slightly softer construction but identical compounds, to try to generate a little more grip and address rider complaints about the rear spinning without creating drive, even in high gears.

The new wings on the Ducati were much larger than the previous versions, to perhaps address the need for drive out of the many first gear corners at Le Mans.

Michelin bringing yet another tire to another race may sound like they are still flailing around, but in reality, it is a sign that the French tire maker is starting to settle on a development direction, after their plans had been sent astray by the double Ducati disasters of Loris Baz and Scott Redding.

The rear tire raced at Austin and Jerez was the so-called “safety tire”, a construction Michelin was certain would make race distance without any nasty surprises. It was raced without any real testing, meant only as a back up, not seriously intended for competition.

The test on Monday at Jerez was probably the most important test of the year so far. A chance to test the day after a race, in similar conditions, and with ideas born of the data from the first four races of 2016 to try out.

There really was a lot to test: not just parts and setup, but also three new front tires from Michelin, as well as further work on the “safety” rear tire introduced after Argentina.

First out of the pits was Bradley Smith, determined to turn his tough start to the season around. Last on to the track was Valentino Rossi, rolling out of pit lane some time after 2pm.

Celebrations of his astounding victory at Sunday’s race must have been intense: the Italian was very hoarse when he spoke to us at the end of the day.

A major focus for all of the riders was on tires. Michelin had brought three new front tires to test, and the riders also had the remainder of their allocation from the weekend to use.

There was nothing new at the rear, but given how little experience they had with the construction introduced after Scott Redding’s rear tire delaminated in Argentina, there was much still to be learned.

Bradley Smith had described it as “a prototype”. The tire had done a handful of test laps, and then two races. It had created problems for everyone at Jerez on Sunday, and so much work was focused on finding more rear grip.