Conversion kits for converting a two wheeled motorcycle to a three wheeled trike configuration and methods therefor

摘要

A conversion kit for converting a two wheeled motorized vehicle to a three-wheeled motorized vehicles, having a two-wheeled axle and offset drive assembly that is non-coaxial with the original one wheeled axle, having two drive sprockets one of which is rearwardly offset from the other, and is driven by a minimally adapted original drive assembly corresponding to the original one wheeled axle.

主权项

1. An axle conversion kit for a motorcycle having a pre-existing rear drive assembly and a corresponding original wheel, the conversion kit replacing the original wheel with an off-set differential assembly for a two-wheeled replacement system that draws transmission power from a pre-existing transfer case of the pre-existing rear drive assembly, the conversion kit comprising:
a transfer case adaptor configured to mechanically engage with the pre-existing transfer case and a pre-existing swing arm of the pre-existing rear drive assembly, and to rotate via mechanical rotation transmitted through the pre-existing transfer case; a first drive sprocket mechanically engaged to the transfer case adaptor such that mechanical rotation of the transfer case adaptor translates to mechanical rotation of the first drive sprocket; an axle-supported differential assembly; a second drive sprocket mechanically engaged to the axle-supported differential assembly, the second drive sprocket configured to mechanically link with the first drive sprocket such that mechanical rotation from the pre-existing transfer case translates to mechanical rotation in the second drive sprocket and mechanical rotation in the axle-supported differential assembly; and a frame configured to securely engage with the pre-existing transfer case and defining an internal space; wherein, when the conversion kit is assembled and installed on a motorcycle:
the frame is positioned, and pivotally suspended, within a void left by the original wheel of the motorcycle;the pre-existing transfer case, the pre-existing swing arm, the transfer case adaptor, the first drive sprocket, the axle-supported differential assembly, and the second drive sprocket are positioned within the internal space of the frame; andthe axle-supported differential assembly is rearwardly set back from the transfer case adaptor, the pre-existing transfer case, and the pre-existing swing arm;with the proviso that, when the conversion kit is assembled and installed on the motorcycle, the axle-supported differential assembly is not mounted to the pre-existing transfer case or to the pre-existing swing arm.