BMW Motorrad launches fast, light, DOHC Boxer and intends to go racing
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Image Gallery ( 58 images )After the HP2 Enduro and the HP2 Megamoto, the HP2 Sport is the third representative of an independent motorcycle category from BMW fitted with the historic Boxer engine. All the HP2 motorcycles mentioned use the technical basis of production vehicles, but are clearly differentiated by an uncompromising interpretation of their actual purpose through a conspicuous and emphatically resolute sports orientation and exclusive product features.
These exceptional motorcycles are developed with great passion by small teams of professionals. The special team structure guarantees that the many years of experience of the development engineers, their grasp of the essential, personal know-how and “feeling” have a direct influence on the product.
At the same time these engineers make use of the most modern development and simulation tools plus all the technical facilities that BMW as a whole has to offer. This symbiosis of high-tech and professional skill is what distinguishes the unique appeal of the HP motorcycles.
Development, Technical Highlights and Design
The new BMW HP2 Sport extends the BMW Motorrad HP model range and is a direct descendant of the BMW R 1200 S. Apart from established concepts such as the BMW Motorrad Telelever and EVO Paralever as well as the cardan shaft drive, almost all components were newly developed or at least modified to a large extent. Weight saving, increased performance plus the uncompromising sporty configuration was top of the agenda in the list of requirements for the development engineers.
A dedicated specialist team of veteran racing motorcyclists, engineers and mechanics, whose pulse quickens for the Boxer and who have also devoted themselves to motor sport in their private lives, developed this new model for BMW Motorrad. Experiences that the BMW Motorrad motor sport team had collected with the Boxer racing motorcycle – including a number of races in the endurance world championship of 2007 – were also incorporated.
DOHC cylinder heads, valve actuated by drag lever
A complete redesign of the cylinder heads allowed the Boxer to reach higher revs. Extensively tests in endurance events followed in addition to the usual tests. Double overhead chain driven camshafts (DOHC) and valves actuated by very light drag lever now enable top revs of 9500 rpm. The four radially arranged valves ensure extremely compact combustion chambers so that there is no need for the second spark plugs as used in the R models until now. The compression ratio is 12.5:1. Super Plus with 98 RON is recommended as the fuel for optimum performance although the motorcycle can also run on Super 98 RON.
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