Cross runner
In automotive engineering, the transverse rotor designates the installation position of the internal combustion engine , especially in motorcycles . The crankshaft of the engine is installed lengthways in the direction of travel of the motorcycle in the transverse rotor and rotates transversely to it - hence the name "transverse rotor". The transverse rotor is particularly available as an in- line engine ( Triumph Rocket III ), boxer engine ( BMW-R series ) and V-engine ( Moto Guzzi ).
In the case of cross-machines in boxer and V-formation, the cylinder pairs are each transverse to the direction of travel. In this regard, misunderstandings can easily arise because transverse runners - with regard to the position of the crankshaft and regardless of the length and width of the engine - are now usually referred to as a longitudinal engine or longitudinal installation.
For structural reasons, transverse runners are often provided with a cardan drive ; The crankshaft, transmission shafts and cardan shaft are one behind the other and (largely) parallel. The term transverse runner is already comparatively old and came up with the first two-cylinder motorcycles with cardan drive such as the British Douglas (model Endeavor , small series 1935/36). The propeller motorcycle (two-cylinder, 1906) and FN (four-cylinder, 1904) are considered to be one of the first examples of transverse runners .
Individual evidence
- ^ Rüdiger Bellersheim et al .: Expertise in motorcycle technology. Europa-Lehrmittel, Haan-Gruiten, 2nd edition 2013, ISBN 978-38085-2232-5 , p. 21.
- ^ Motorcycle (magazine) : Lexicon of motorcycle technology. 1976/77., P. 124.
- ^ NN, in: Allgemeine Automobil-Zeitung , 1934, Volume 35, Page 78.