Abstract: A motorcycle frame is formed of tubular members which are hollow to provide a reservoir for oil used to lubricate the motor of the motorcycle. Fittings are provided within the tubular frame for receiving an oil filler cap, an oil spill hole, an outlet to the oil pump, an oil return inlet, an oil drain, and a crankcase vent. The seating area of the motorcycle frame is dropped closer to the ground due to the elimination of the oil reservoir normally located below the seating area of the frame, while incorporating a dampened rear wheel swing arm frame.

Abstract: An anti-sway system for a steerable vehicle of the type employing a torsion bar suspension system. Operatively coupled to the torsion bar for each of the vehicle's steerable wheels or skis is a mechanism for increasing the effective spring rate of the suspension upon cornering over that prevailing when steering a straight line course.