CRANK CASE REINFORCING STRUCTURE OF MOTORCYCLE

PROBLEM TO BE SOLVED: To improve the rigidity of a crank case in a chain tension direction by a simple method.SOLUTION: A crank case reinforcing structure of a motorcycle is used for a motorcycle provided with: a crankshaft 24 provided in an engine 12; a transmission 25 provided with an input shaft...

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1. Verfasser: MASUDA DAIJIRO
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To improve the rigidity of a crank case in a chain tension direction by a simple method.SOLUTION: A crank case reinforcing structure of a motorcycle is used for a motorcycle provided with: a crankshaft 24 provided in an engine 12; a transmission 25 provided with an input shaft 26 and an outlet shaft 27, connected to the crankshaft 24; a drive sprocket 33 provided on the output shaft 27; a driven sprocket connected to the drive sprocket 33 through a chain 34; and a crank case 20 supporting the crankshaft 24, the input shaft 26 and the output shaft 27; wherein the output shaft 27 is supported by the crank case 20 through a bearing 31, bolts 40 are fixed to the crank case 20 from the back side to the front side of the output shaft 27, and the bolts 40 are provided to pass through the vicinity of the bearing 31 along a direction connecting the axial center of the drive sprocket 33 and the axial center of the driven sprocket.