Primary drive

The primary drive (more rarely also called primary drive ) connects the crankshaft of an engine with the input shaft of the transmission . In motorcycles, the primary drive can be designed as a gear , roller chain or toothed belt drive. If the engine is installed lengthways (crankshaft lengthways to the direction of travel), the power can be transmitted directly to the clutch without a primary drive . The gear ratio ( ) is usually between 1.5 and 4, i.e. the crankshaft rotates faster than the input shaft of the gearbox, but the torque is higher there. ${\ displaystyle i}$

Individual evidence

^ Richard van Basshuysen : Handbook Internal Combustion Engine: Fundamentals, Components, Systems, Perspectives. Vieweg and Teubner Verlag, 6th edition 2012, ISBN 978-38348-1549-1 , p. 374
^ Rüdiger Bellersheim et al .: Expertise in motorcycle technology. Europa-Lehrmittel, Haan-Gruiten, 2nd edition 2013, ISBN 978-38085-2232-5 , p. 155
^ Ulrich Hoffmann : The great motorcycle lexicon. Schwarzkopf & Schwarzkopf Verlag Berlin, 2004, ISBN 978-389602-535-7 , p. 343
^ Rüdiger Bellersheim et al .: Expertise in motorcycle technology. Europa-Lehrmittel, Haan-Gruiten, 2nd edition 2013, ISBN 978-38085-2232-5 , p. 155
↑ motorradonline.de primary drive (accessed on February 18, 2014)

[1] Richard van Basshuysen : Handbook Internal Combustion Engine: Fundamentals, Components, Systems, Perspectives. Vieweg and Teubner Verlag, 6th edition 2012, ISBN 978-38348-1549-1 , p. 374

[2] Rüdiger Bellersheim et al .: Expertise in motorcycle technology. Europa-Lehrmittel, Haan-Gruiten, 2nd edition 2013, ISBN 978-38085-2232-5 , p. 155

[3] Ulrich Hoffmann : The great motorcycle lexicon. Schwarzkopf & Schwarzkopf Verlag Berlin, 2004, ISBN 978-389602-535-7 , p. 343

[4] Rüdiger Bellersheim et al .: Expertise in motorcycle technology. Europa-Lehrmittel, Haan-Gruiten, 2nd edition 2013, ISBN 978-38085-2232-5 , p. 155

[5] torradonline.de primary drive (accessed on February 18, 2014)