The BMW Motorrad Intermot has brought new K 1600 GT / GTL which is to operate in the motorcycle market in the small circle of vehicles driven by a propeller to six-cylinder. The only other bike on the market that may include such a separation is in fact the Honda Goldwing well from 1832 cm3. On closer inspection, however, the Exhibition in Cologne we saw another bike that boasts a six-cylinder engine, which uses, in addition, a completely new layout for the two wheels, the Horex VR6.
The VR6 engines are nothing new, since the Volkswagen used them extensively in the past on its own Golf and CorradoBut they are a novelty among the absolute motion.
The engine that drives the Horex was patented by the founder of the German, Mr. Clemens Neese for applying two-wheel and draws some technical aspects of what the planned Volkswagen few decades ago. The initials VR, immediately clarifies that this is a V-engine but also in line (from the German Reihen).
The basic idea behind a narrow V-engine is the ability to build a six-cylinder technology without the complication of having two separate banks, Thus saving a great deal about mergers, chains, camshafts etc. and greatly reduce the weight. The second advantage of this engine comes from the dimensions that are slightly higher than that of a four-line.
The layout engine Horex is truly unique, because its designers chose to construct a tested trialbero, With chain control, which drives the two shafts, and the inside is moved by the camshaft through a rear gear. The distribution has three valves per cylinder, so the camshafts are different from each other: the rear six eccentric to operate the intake valves of the six “lay back, the central shaft has nine because it must handle the unloading of the rear cylinder bank and aspiration of the front and the tree has only front three cams for the three exhaust valves of the front bench.
To simplify the construction of the engine, however, is evidently due to resort to some compromiseBecause, as is the narrow V between the cylinder banks, in logical terms the “head” and then the combustion chambers, should themselves be angled to each other. The approach taken by Horex is very simple: the sky was made of the pistons tilted by 7.5 ° inwards in order to have a floor flat head and carry out the combustion chambers with a favorable geometry.
The solution we chose at that time, Volkswagen was different and included a completely flat head with intake and exhaust valves on the same level and combustion chamber derived almost entirely in the piston crown. The displacement is 1218 cm3Obtained by a piston and crankshaft by 68.0 mm by 55.0 mm, the compression ratio was kept low (9,0:1) because the Horex not pleased with the performance that this engine could have developed, have very decided to install a Rotrex supercharged radial. This is belt-driven which, depending on the version, will carry a different gear ratio and therefore a different supply pressure. These performances by the engineers of Horex are interesting because, depending on the configuration of charge, the maximum power is between 175 and 200 HP. The maximum torque is declared over 150 Nm.
The Horex VR6 Roadster is built around a twin-spar aluminum frame that interfaces to a front section of steel that serves as the steering head. The front fork is mounted upside down well 50 mm in diameter and 320 mm brake discs with radial mounted Brembo calipers. E ‘provided the presence of’ABS Series. At the rear there is a light alloy rear swingarm, which also includes the belt, Chosen for reasons of reliability and lack of maintenance. The weight of the VR6 Horex should be geared around 239 kg, so very low overall, but definitely reduced if you think it is a six-cylinder bike.
While the development of the VR6 Roadster endless process, the step goes hand in increasing its sales, which will initially be limited to Germany, Austria and Switzerland. The Launch is scheduled for June 2011While the first units are expected to reach dealerships later this year.
For the year 2012 is expected to expanding sales in Europe, and to see a circular Horex in Italy we have to wait a while ‘… provided that the project is successful
