Front brake light switch | Steve Saunders Goldwing Forums imported post It's the plunger or operating rod of the switch It should move forward when the lever is pressed making contact with the two wires leaving the switch which is a single pole normally open type Try giving it a good shot of contact cleaner or WD40 and work it a bit to see if that helps
Design Differences Between Car and Motorcycle Rim Tire Since the precise effective location at which the road applies forces to the tire is unknown and the origin of the tire axis system is arbitrarily defined by the wheel and road geometry, three forces (Fx, Fy, and Fz) and three moments (Mx, My, and Mz) are required to define the road’s action upon the tire