2019 BMW i8 Roadster Roof Mechanism

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Passengers inside the new BMW i8 Roadster will look up to find either the open sky or a high-quality, all-season fabric soft-top with additional soundproofing. All-electric operation ensures the roof opens or closes in an almost silent hush, within 15 seconds and while travelling at up to 50 km/h, if required. The broad, wide-opening lid guarantees an emotionally-engaging driving experience shaped in no small part by the sun and on-rushing air.

The BMW i8 Roadster is alone among its rivals in offering owners a fabric soft-top which stows away into a perpendicular position in the rear when opened and therefore takes up very little space. The three segments of the roof fold vertically in a Z. And between the roof box and the seats for the driver and front passenger is around 100 litres of additional storage space. Together with the load area in the rear, which can accommodate 88 litres of cargo, the rear compartment helps to ensure the open-top version of the plug-in hybrid sports car is also as well equipped as possible for everyday use and trips away.

Opening the roof raises the rear window automatically by around 30 millimetres into a comfort position. This allows it to mimic the effect of a conventional draught stop in reducing air turbulence inside the cabin and ensuring those on board can enjoy the pleasure of open-top driving pleasure in comfort. The driver can adjust the height of the rear window at the touch of a button and thus control the impact of the inflowing air as desired.

Intelligent lightweight design and innovative production technology also play a key role in the construction of the soft-top. For example, aluminium elements connecting the roof mechanism with the body of the new BMW i8 Roadster are produced in a new 3D printing process. This manufacturing method for aluminium components breaks new ground in the automotive industry and allows the topologically optimised bracings to be produced in a geometric form, which would not be possible using conventional casting techniques and ensures an optimum balance between component rigidity and weight.

Видео 2019 BMW i8 Roadster Roof Mechanism канала Motorward