Abstract: Disclosed is a modified CVT flyweight that allows for a 1 to 15 degree bidirectional change of pitch-angle of the cam section of a flyweight to variably affect the load placed on a connected drive-unit to match changes in elevation or terrain. Enabling the cam pitch-angle adjustment is a secondary pivotal axis (separate from the primary centrifugal axis) that is incrementally rotated and held in position by a manually rotated threaded fastener acting as a cantilever upon one side of the pivot. There may be removable weights in the form of threaded screws, pins or rivets that can be added or subtracted from the flyweight in addition to changes in the cam pitch-angle to affect the overall mass of the flyweight and also adjust the maximum RPM's of the engine.

Abstract: A braking and steering mechanism that is located near, but behind the steering pivot point of a runner of a ski vehicle. In a conventional snowmobile, for example, the steering pivot point is near the middle of the longitudinal axis of the runner, and, hence, the preferred braking and steering mechanism extends from behind the middle of the runner, but not at the rear end of the runner, to contact the snow or ground to slow or stop the snowmobile movement relative to the snow or ground. The preferred braking and steering mechanism has a brake that is a retractable, protruding member that extends down from the runner bottom surface near, but behind the steering pivot point a sufficient distance to frictionally engage the snow/ground significantly more than does the bottom of the runner. The protruding member may take the forms of a prong or spike, a blade or plate, or other single, plural, smooth or toothed member(s) that can make frictional contact with the snow/ground.