Image credits: © McLaren.

2018 McLaren MCL33

The striking MCL33 will contest the 2018 FIA Formula 1 World Championship, and marks the first time in McLaren's 52-year history that it has run a car powered by Renault engines.

The car will race in a stunning new livery that draws its inspiration directly from the team's iconic papaya orange and blue colour scheme that McLaren first raced in Formula 1 50 years ago. The MCL33 will be driven by Spain's Fernando Alonso, the F1 double world champion entering his fourth consecutive season with McLaren, and his team-mate Stoffel Vandoorne of Belgium, who is starting his second season in Formula 1.

The engineering philosophy of the MCL33 follows the roots established by its predecessor, with data accumulated from the 2017 season feeding a range of improvements. Much of the work on the MCL33 has been around optimising the packaging of the new Renault engine, and the incorporation of the new halo device.

2018 McLaren MCL33The MCL33 will conduct a dynamic filming day at a Spanish test track on Friday before beginning eight days of pre-season testing at the Circuit de Barcelona-Catalunya next Monday.

Technically, the McLaren MCL33 is a logical development of last year's car.

But it's been developed and refined with the benefit of a year's experience with the current regulations.

'With last year's car, we had to commit to certain decisions about architecture based on what we knew at the time,' says Tim Goss, McLaren's Chief Technical Officer - chassis. 'With a year of track learning behind us, we've used that understanding to adjust some architectural decisions. That means we've been able to revise all the sorts of things you bake into the chassis at the start of the year.'

'We're definitely continuing along the same trajectory,' continues Goss. 'For launch, the car will look evolutionary, and we will continue enhancing the MCL33 through testing and the race season.

In terms of development, the design team has focused on refining the package; making it neater, simpler and more elegant.'

'That's always been an area of focus for us,' says Goss. 'But, this year, we went beyond to get a neat and tidy packaging solution. And that just gives the aerodynamicists more scope to play with the bodywork.'

2018 McLaren MCL33
Creating that neat packaging has brought its fair share of challenges. Beneath the bodywork lies a new power unit with a significantly different philosophy to its predecessor.

'That change has been a big deal,' says Goss. 'Even though the regulations state that the front and rear engine mounts need to be the same for every manufacturer, the layout of the engine, its architecture, is very different from before.

'There are two families of engine out there; the Mercedes and Honda concept, with the compressor at the front of the engine, turbine at the back, MGÚ-H sat in the vee; and the Ferrari and Renault approach, where the turbo-charger is at the back of the engine, and the MGÚ-H sits forwards into the vee.

'Each of those approaches has its pros and cons, but I'm actually quite a big fan of the Renault approach. Making the switch had a big impact on the installation of the engine. The advantage of the Renault layout means that we can push the engine forwards, but then you have the compressor at the back of the engine, so you've got to get the outlet pipes forward without impacting the packaging.

'We had to redesign the back of the chassis, the gearbox bell-housing area, the rear suspension, and the cooling layout. That was two weeks of intense effort to get right. But it was something we were somewhat prepared for, because we knew it might happen, and it's amazing what people can do in such a short space of time when the chips are down and you've got a really clear mission.

2018 McLaren MCL33'So now we've got a really tidy packaging solution; the gearbox and rear suspension designers did an unbelievable job to redesign everything.'

It's a marker of the strength in depth of the department that it could incorporate such a fundamental change to the car so late into the design stage, and still deliver to plan.

'That's because we've got a very tight-knit engineering group,' Goss explains. 'There's a very clear level of communication between us, so we could make quick and bold decisions, then just get on with it.'

Be brave, indeed.

McLaren's distinctive orange livery was successful across Formula 1, the Indy 500 and the CanAm series. For 2018, the MCL33 spectacularly revives the original colours of McLaren - papaya orange and dark blue - in a refreshing new way.

Inspired by the numerous entreaties of our fans, the return to papaya was also driven by McLaren looking to its past to shape its future. The unique papaya livery is an overt statement of the team's next chapter, and symbolic of McLaren at its simplest, purest form: that of racers.

It reflects the essential qualities that have remained constants for McLaren throughout its history and are intrinsic to its future. In particular, it evokes the bravery of the team; played out through the #BeBrave campaign that has previewed the launch and will remain a feature of the 2018 season.

McLaren first used papaya in 1968, another convention-busting decision of founder Bruce McLaren. At a time when many nations raced under traditional national colours, such as British Racing Green, French Racing Blue and Italian Rosso Corsa, Bruce chose papaya to make his eponymous team stand out on the racetrack.

The MCL33's eye-catching primary colour, Papaya Spark, and secondary colours, Burton Blue and Cerulean Blue, were each developed in collaboration with McLaren partner AkzoNobel. The innovative coating systems supplied by the company have enabled the team to significantly reduce the total weight of paint and decrease paint processing time by more than 50%.

Source - McLaren

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