A variable traction device for drifting vehicles that allows the driver to vary the traction of the rear wheels with the road surface by alternating the weight of the drift vehicle between two sets of rear wheels with a substantially different coefficient of friction. The variable traction device includes a set of primary rear wheels, a set of secondary rear wheels, and an actuator lever. The actuator lever is located within reach of the driver and is operatively coupled to raise and lower the secondary rear wheels between a retracted position in which the vehicles weight is on the primary rear wheels and a deployed position in which the vehicles weight is on the secondary rear wheels. By manipulation of the actuator lever, it gives the driver the ability to vary the traction of the rear wheels with the road surface.

This invention relates to a universal brake system (UBS) that combines features from an adjustable wheel traction system (WTS) and an improved anti-lock brake (ABS) system. The WTS provides a plurality of extendable and retractable spikes contained in a wheel assembly or wheel adapter to increase traction (friction) between a vehicle's wheel and its supporting surface. To further improve wheel traction each wheel spike has different types of changeable heads for different types of terrain and road surfaces. When operating in dry road mode, the UBS operates as an anti-lock braking system except the spikes can operate during emergency braking to provide additional traction between the tire and wheel support surface. When operating in slippery road mode, the UBS activates the WTS for increase traction control and utilize an improved computer controlled anti-lock braking system to alternate between wheel lock and anti-lock brake with skid control to provide the ultimate solution to decreasing a vehicle's stopping distance and controlling a vehicle's skid on slippery and dry road surfaces.

This invention relates to a universal brake system (UBS) that combines features from an adjustable wheel traction system (WTS) and an improved anti-lock brake (ABS) system. The WTS provides a plurality of extendable and retractable spikes contained in a wheel assembly or wheel adapter to increase traction (friction) between a vehicle's wheel and its supporting surface. To further improve wheel traction each wheel spike has different types of changeable heads for different types of terrain and road surfaces. When operating in dry road mode, the UBS operates as an anti-lock braking system except the spikes can operate during emergency braking to provide additional traction between the tire and wheel support surface. When operating in slippery road mode, the UBS activates the WTS for increase traction control and utilize an improved computer controlled anti-lock braking system to alternate between wheel lock and anti-lock brake with skid control to provide the ultimate solution to decreasing a vehicle's stopping distance and controlling a vehicle's skid on slippery and dry road surfaces.

A system for simulating wet runway conditions by using a liquid container that is placed inside an aircraft. The liquid container is connected to a nozzle that sprays water in front of the wheels of the aircraft. A valve is used to control the flow of water from the nozzle. Systems, such as the braking system of the aircraft, can then be tested in wet runway conditions simulated by the system. The amount of water sprayed from the nozzle can also be electronically controlled in relation to the speed of the aircraft, such that the nozzle sprays a nearly uniform layer of liquid in front of the wheels. The system can also be modified to include two tanks to manipulate the center of gravity of the aircraft.

A system for simulating wet runway conditions by using a liquid container that is placed inside an aircraft. The liquid container is connected to a nozzle that sprays water in front of the wheels of the aircraft. A valve is used to control the flow of water from the nozzle. Systems, such as the braking system of the aircraft, can then be tested in wet runway conditions simulated by the system. The amount of water sprayed from the nozzle can also be electronically controlled in relation to the speed of the aircraft, such that the nozzle sprays a nearly uniform layer of liquid in front of the wheels. The system can also be modified to include two tanks to manipulate the center of gravity of the aircraft.

The present invention relates to a vehicle braking arrangement for a vehicle with wheels contacting the ground during normal running. The vehicle braking arrangement includes an emergency brake control unit, a first emergency braking system including non-reversible braking means arranged to operate independently of the vehicle wheels, at least one acceleration detector, and a wheel brake anti-locking system. The emergency brake control unit is arranged to input acceleration data (a) when the wheel brake anti-locking system is active, and to calculate the coefficient of friction () between the wheels and the ground. The emergency brake control unit is arranged to determine if the first emergency braking system should be activated in dependence of a first plurality of parameters, where one of these parameters is the coefficient of friction ().

This invention relates to a universal brake system (UBS) that combines features from an adjustable wheel traction system (WTS) and an improved anti-lock brake (ABS) system. The WTS provides a plurality of extendable and retractable spikes contained in a wheel assembly or wheel adapter to increase traction (friction) between a vehicle's wheel and its supporting surface. To further improve wheel traction each wheel spike has different types of changeable heads for different types of terrain and road surfaces. When operating in dry road mode, the UBS operates as an anti-lock braking system except the spikes can operate during emergency braking to provide additional traction between the tire and wheel support surface. When operating in slippery road mode, the UBS activates the WTS for increase traction control and utilize an improved computer controlled anti-lock braking system to alternate between wheel lock and anti-lock brake with skid control to provide the ultimate solution to decreasing a vehicle's stopping distance and controlling a vehicle's skid on slippery and dry road surfaces.

This invention relates to a universal brake system (UBS) that combines features from an adjustable wheel traction system (WTS) and an improved anti-lock brake (ABS) system. The WTS provides a plurality of extendable and retractable spikes contained in a wheel assembly or wheel adapter to increase traction (friction) between a vehicle's wheel and its supporting surface. To further improve wheel traction each wheel spike has different types of changeable heads for different types of terrain and road surfaces. When operating in dry road mode, the UBS operates as an anti-lock braking system except the spikes can operate during emergency braking to provide additional traction between the tire and wheel support surface. When operating in slippery road mode, the UBS activates the WTS for increase traction control and utilize an improved computer controlled anti-lock braking system to alternate between wheel lock and anti-lock brake with skid control to provide the ultimate solution to decreasing a vehicle's stopping distance and controlling a vehicle's skid on slippery and dry road surfaces.