Variable geometry cycle frame

Abstract

A system provides for the adjustment of a cycle frame, for example the rake angle, gooseneck height, wheel base, and rear end height of a motorcycle. The system includes a variable length backbone, a variable length downtube, optionally a variable length fork assembly, and optionally a variable height rear end. The length of the backbone, downtube, fork, and height of the rear end can be adjusted, for example, using a linear actuator such as an electromechanical ball screw associated with each of the backbone, downtube, fork, and rear suspension. Adjustment of the lengths/heights/angle can be controlled independently of one another and/or in coordination by a controller. The controller comprises a processor, memory, and actuator drive components. The controller can store presets which allow the rider to automatically adjust the variable length components to specific lengths that provide a desired rake angle, gooseneck height, wheel base length, rear end height, or combination thereof.

Dependencies are inferred from the claim text.