US 2006/0076175 A1Published application

Motorcycle

AssigneeHonda Motor Co., Ltd.

InventorsYutaka Yamakura, Takero Shibukawa

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Abstract

In a motorcycle, a pivot plate on a drive shaft side is arranged closer to a vehicle body center axis side than the drive shaft and, at the same time, a swing arm mounting portion of the pivot plate in the vicinity of the drive shaft is flattened. Further, a lower cross pipe is extended between the left and right pivot plates in a state that the lower cross pipe projects from the pivot plate on the drive shaft side, a down tube is lowered from a head pipe, a lower pipe is extended rearwardly in the longitudinal direction of a vehicle body frame from a lower end of the down tube, and a rear end of the lower pipe is connected to a projecting portion of the lower cross pipe thus offsetting the pivot plate arranged closer to the drive shaft side than the lower pipe to the vehicle body center axis side.

Claims3

Dependent claims

A motorcycle having a vehicle body supported by front and rear wheels, said vehicle body having a vehicle body centerline, said motorcycle also having an engine and a drive shaft, said drive shaft being offset from said vehicle body centerline, said engine having an engine output transmitted to the rear wheel by said drive shaft, said motorcycle comprising:

a frame having a pair of pivot plates;
and
a swing arm mounted on the pivot plates so as to swing vertically, said rear wheel being mounted on a rear portion of said swing arm;
wherein one of said pivot plates is on the drive shaft side of said vehicle body and is arranged closer to said vehicle body centerline than the drive shaft, said one of said pivot plates having a portion nearest said drive shaft and a remaining portion and wherein said portion nearest said drive shaft is flattened relative to said remaining portion.

1 more element

Dependencies are inferred from the claim text.