‘The physical limit of the bike is one thing; the mental limit of a rider is another'

MotoGP

Why is Ducati’s Desmosedici so good? How will it be better in 2024? How important are computer simulations in MotoGP? Ducati’s three-times title-winning crew chief tells (nearly) all

Gabbarini and Bagnaia have worked together since the Italian graduated to MotoGP in 2019, first at Pramac, then from 2021 in the factory team

Gabbarini and Bagnaia have worked together since the Italian graduated to MotoGP in 2019, first at Pramac, then from 2021 in the factory team

Ducati

Cristian Gabarrini is the crew chief who has sat alongside the winners of all three of Ducati’s MotoGP world titles: Casey Stoner in 2007 and Pecco Bagnaia in 2022 and 2023.

Crew chiefs are engineers but they’re a bit different from other engineers, because they are the primary communication link between the rider and those other engineers. So crew chiefs need as much emotional intelligence as they need motorcycle intelligence, because the human side is so big in bike racing, much bigger than in cars.

Gabarrini started working with Casey Stoner when the young Australian joined Ducati from LCR Honda at the end of 2006. When Stoner moved to the factory Repsol team at the end of 2010, Gabarrini went with him and guided him to his second MotoGP crown in 2011.

Gabarrini stayed at Honda until he returned to Ducati at the end of 2016 to work with Jorge Lorenzo, who had just quit Yamaha. Maybe he would’ve won the 2019 MotoGP title with Lorenzo, if the five-times world champion hadn’t fallen out with Ducati management.

Instead, Ducati Corse boss Gigi Dall’Igna put Gabarrini alongside rookie signing Pecco Bagnaia for 2019, because Dall’Igna always knew Bagnaia has something very special.

Gabarrini always commences interviews by laying out the rules of engagement. “If I can speak about something I will speak about it,” he says. “If I cannot speak about something, I tell you.” No one MotoGP gives away secrets for free anymore.


Mat Oxley: Since you returned to Ducati so much has changed: the mass damper in 2017, then the holeshot device, the ride-height device and the ground-effect diffusers, so the bikes are no longer old-school, they’ve become Formula 1 cars with two wheels. How has all this changed your job?

Gabarrini: Maybe things haven’t changed so much for us, but, OK, some areas now have more importance than before. It’s not so much that you have to take care of new areas of performance, but more that you have to take care of areas that weren’t so manageable before.

I mean, before you couldn’t drop the rear of the bike for the start or to accelerate more. You didn’t choose different fairings for different aerodynamic effects, so, like you said, you were more focused on old-school areas. This is an evolution of the technical side, so we just have to adapt a bit.

2016

Gabarrini with Stoner during his first Ducati tests in November 2016. On the left is Filippo Preziosi, designer of the first Desmosedicis, both good and bad

Has your job got easier or more complicated?

It’s not got easier or more complicated, it’s just that the volume of things you need to take care of is more, so you need to do all that and you need to see and check a bigger picture. In the end it’s not more complicated, but, yes, it takes more time and more effort.

Nowadays crew chiefs and engineers are much more closely involved with the rider, who doesn’t just go out and ride, but talks deeply with his engineers about how to ride the bike in certain ways

From the archive

Yes, to entirely manage this kind of bike we now have engineers in the back of the garage that constantly check data and try to find the best compromise.

Without doubt, the crew chief needs a higher level of technical knowledge compared to, say, twenty years ago. Because, if we’re talking about aerodynamics you need to know how aerodynamics work, so you need to know this fairing will do this and that fairing will do that. Of course, you also have other guys that take care of the aerodynamics more deeply, but for sure without university knowledge it would be 100% more complicated.

In the old days crew chiefs were usually former riders and self-taught engineers, whereas now we see more and more people in pit lane coming from university, so they understand the science more deeply…

I think what’s really changed is the balance between experience and knowledge. Experience will always be very, very important, but now it isn’t enough to do your best, so you can’t really do this job anymore without the knowledge.

Bal 2018

Gabbarini and Bagnaia during their first tests together, Valencia November 2018

Obviously the Ducati has been the best bike on the grid for three years now, so what’s so good about it?

The balance – all the different areas together. When I came back to Ducati in 2017 the bike was already a very good bike, but it was still suffering a lot in some precise areas.

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Everyone talked about turning – the bike didn’t turn and every Ducati rider complained about that. Since then we’ve grown a lot in this area. They did a really good job on this at the factory. Turning still isn’t our strongest point, but by improving a little bit in every area, the total balance is now very good.

And we know the bike is good because different riders with different riding styles can perform quite well on it – the average performance is very high. This is the demonstration that we’ve reached a good balance.

Does some of your increased turning performance come from aerodynamic development: diffusers in the fairing that give some ground effect, which gives you more grip and therefore better turning?

It’s a little complicated for me to speak about that! [This is the first time Gabarrini’s rules of engagement kick in, but not the last! By ducking the question, I think he’s answering: ‘Yes’]. I can’t speak about it deeply, but I can say, just for an example, that the aerodynamics of a plane are mainly to lift the plane and to have as little drag as possible, so the efficiency is the relationship between lift and drag.

It’s different with a motorcycle, because the position of the bike in relation to the ground changes constantly. The bike needs to turn quickly, and you can use different aspects of aerodynamics technology to reach different targets, but if we push too much in one aerodynamic direction, for sure we will lose in another, like turning. So I come back to what I said before – you need a good balance and a good compromise to maximise performance.

Ducati

Gabarrini isn’t one for the limelight – celebrating Bagnaia’s 2023 title at Valencia

No motorcycle is perfect, so what do you need to make the Ducati better for 2024? For example, Pecco isn’t a big muscle man, so he’s always talking about the manoeuvrability of the bike, which is now much better since you reduced the size of the fairing.

Yes, I’ve never heard a rider say that any bike is too easy to handle or has too much grip, for example. With the power that we have now, for sure rear grip is one of the main issues and it will never be enough.

It’s the same with the handling [manoeuvrability], because the rider must be quick in changes of direction. But it’s difficult to talk about one area, because as soon as you move the balance of one area of performance the consequence is that the points of balance of all the other areas also move, so you must always consider everything together.

Pecco says that this year’s bike has more rear grip, so he must wait a little longer before opening the throttle, otherwise the bike pushes the front…

You can never have enough rear grip because as soon as you get more grip you increase the performance. But I agree with Pecco – if you move the [traction] balance towards the rear of the bike then the rider must adapt himself and his riding style to this new way. For sure Pecco has had to change the way he manages the bike in that area, but also the way he manages the bike when he is entering corners, trying to slide in the entry.

Pecco also says Jorge Martin has a slight advantage exiting corners, so what does Pecco need to exit like Jorge?

It’s really difficult to say, because they’re not that different in riding styles but for sure their riding styles are a bit different.

Most of all, the situation at the moment is different [we are talking at Sepang, on the eve of the Malaysian GP] because Jorge has nothing to lose [Martin was 13 points down on Bagnaia going into the Sepang races], so he can push more in, let me say, dangerous areas. For example, apex lean angle. Whereas Pecco has to be more a bit more conservative.

After that it’s difficult to say Jorge is faster here and slower there, because they are both very fast and they are both very good at adapting to different track and grip conditions, so sometimes Pecco is better in one area, but then you go to another track and it’s the opposite, because we are always talking about tiny differences.

I’d say the biggest difference now is the mentality of the two riders, because one has nothing to lose. Even if Jorge finishes second in the championship he’s won [Gabarrini is talking generally here], whereas on Pecco’s side it’s completely the opposite.

2011 MotoGP title with Honda – Gabbarini stayed with Honda for several years after Stoner retired

Gabarrini and Stoner on their way to winning the 2011 MotoGP title with Honda – Gabarrini stayed with Honda for several years after Stoner retired

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Pecco makes the difference in corner entry and he’s had a few front-end crashes, even this year. Is this because his technique is a bit risky because he’s chasing micro-tenths in a tricky area?

I don’t agree 100% with that, because if you look at Pecco’s crashes with the front they are never in corner entry, except in the wet in Argentina. They always happen later [in the corner] and this all depends on many things, about which I cannot speak deeply [rules of engagement again!]. Pecco isn’t risking more than last year or two years before. It’s different because every crash happens for singular reasons.

Pecco says the reason he crashed out in India was because his front tyre was over pressure. This must be a massive stress for everyone in the team because you must go higher than the sweet spot and try to stay in the window between the legal minimum of 1.88 bar and 2.0 to 2.1 bar, when the tyre loses grip. And you have to guess what kind of race Pecco will have, so you need to be able to see into the future.

Yes, this is completely correct. The problem is to predict. If we know in advance how his race will go it’s easy to predict and calculate what pressure we will reach, but we don’t know in advance, so we must take risks in predicting how his race will go.

In general it’s not such a big disaster if you go a bit higher than the pressures you mentioned. Of course the riders feel it, but I think they can manage it. In general we haven’t changed so much the way we take care of this. But now there’s a rule, so we must stay over a certain value.

So you must err on the safe side?

In the past we never raced with the front at 1.65 because the bike is unrideable and 1.7 is already very low. Without the rule, you could use 1.8, no problem. Now you cannot.

Gabbarini and Bagnaia on the eve of winning their second title together

Gabarrini and Bagnaia on the eve of winning their second title together

Ducati

Last year Ducati made some mistakes with its engine spec going into pre-season testing. You seem to have learned from that, what about 2024?

For sure, no revolutions. Of course we are working in every area and we’ve learned from what happened in the past, so we are a bit more conservative now. Just small evolutions, to improve a few percent in some areas.

From the archive

There is less testing now and less practice, due to the new weekend format, so presumably this makes computer simulations more important, which leads to machine learning, artificial intelligence and so on…

In some areas, computer simulations are very, very important, because in those areas the simulations are very, very close to reality. In other areas it’s difficult to make good simulations for many reasons.

First, if we compare MotoGP to Formula 1, the rider is not sat inside the machine and every rider is a different size and moves around the bike in a different way, so you can have the best simulation, but it’s not close enough to reality to base everything on that simulation.

In some areas – aerodynamics, for example – simulations are a lot more advanced compared to motorcycle dynamics simulations, because many people in F1, aerospace and so on use aerodynamics simulations, so there are more experts, more software and more experience in this area.

Öhlins now has two types of front fork – the standard and a longer-stroke version. But Pecco still prefers the standard fork, why?

At the moment, yes. We tested the longer fork last winter but Pecco didn’t feel better with it. Sometimes, it’s better to stay with the same material, because you know where you are. I think the longer fork can have some advantages, but I cannot talk about that!

Most riders like to get close to the bottom of the fork stroke to get more turning, but Pecco says he likes to always bottom the forks on the brakes…

Pecco speaks too much!

Gabbarini, on Stoner’s left, celebrates Ducati’s first title at Motegi in 2007

Gabarrini, on Stoner’s left, celebrates Ducati’s first title at Motegi in 2007

Ducati

Bottoming the forks all the time is incredible to me – it sounds terrifying!

There are two main things that a crew chief and engineers must take care of. The physical limit of the bike is one. The other is, let’s say, the mental limit of the rider. The mental limit of the rider is what makes tenths in the lap time, so the physical limit of the bike can only make tenths if the rider is mentally ready to use it.

[This is the equivalent of what Jeremy Burgess, the most successful crew chief of all time, told me years back, “If the rider wants gold handlebars, give him gold handlebars”. In other words, if you make the rider feel happy on the bike, he will be fast.]

Which brings us back to front tyres. Franco Morbidelli told me that he loses 40% of front-tyre performance when the tyre goes over pressure, so they are locking the front from 320kmh/200mph and then the front is tucking into corners…

Yes and then this 40% becomes 20%, because the rider gets used to this kind of feeling! I always say the perfect setting doesn’t exist. It exists maybe on a computer, because you base your calculations to the physical limit of the bike, but the perfect setting is the one that allows the rider to do his best.

You can do whatever you want to the bike, but if the rider doesn’t feel good then stop using it. If the rider doesn’t feel good with a new setting, he’ll only use 75% of the bike’s performance. So even if the new setting gives a better physical limit of the bike, he’ll most probably be better with the old setting, because he’ll be able to use 100% of the bike. So sometimes we need to stop being too much engineers and try to understand the rider’s side because he’s human.