Motorcycle drive assembly with improved transmission-to-engine mounting

• Main Authors: LEPPANEN; ROBERT L, SCHANZ; JOHN W, LOCKWITZ; GARY, ZIMMERMAN; THOMAS E, DENNERT; R. BRUCE, KUNTZ; KENNETH W, ALBULUSHI; JALAL M
• Format: Patent
• Language: English
• Published: 11.07.2000
• Edition: 7
• Subjects: BLASTING; CRANKCASE VENTILATING; CYCLE AXLE SUSPENSIONS; CYCLE FRAMES; CYCLE SIDE-CARS, FORECARS, OR THE LIKE; CYCLE STEERING DEVICES; CYCLES; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; POWERED PROPULSION OF SLEDGES OR; RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FORCYCLES; STEAM ENGINES; THERMAL INSULATION IN GENERAL; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES; TRANSPORTING; WEAPONS

A drive assembly for a motorcycle including an engine having an output shaft and a transmission having an input shaft parallel to the output shaft and coupled to the output shaft. The engine includes a crankcase having a first interface portion with a first non-horizontal mounting surface. The transmission includes a transmission case having a second interface portion with a second non-horizontal mounting surface arranged to engage the first non-horizontal mounting surface. The second interface portion of the transmission case includes at least one fluid passage for the flow of fluid to or from the engine.