Abstract: A handling strut connects the powertrain of an automobile to a structural member, such as a panel in the engine bay. The handling strut is comprised of two strut members, one connected to the powertrain, the other connected to the structural member. A shaft attached to one strut member, extends through a bushing provided in the other strut member and an air gap is provided between the bushing and the shaft, such that when the engine is idle, or not accelerating, and in the absence of hard cornering, the strut members are decoupled. The isolation of the strut members when not required to control engine roll, reduces/avoids transmission of noise, vibration and/or harshness.

Abstract: A handling strut connects the powertrain of an automobile to a structural member, such as a panel in the engine bay. The handling strut is comprised of two strut members, one connected to the powertrain, the other connected to the structural member. A shaft attached to one strut member, extends through a bushing provided in the other strut member and an air gap is provided between the bushing and the shaft, such that when the engine is idle, or not accelerating, and in the absence of hard cornering, the strut members are decoupled. The isolation of the strut members when not required to control engine roll, reduces/avoids transmission of noise, vibration and/or harshness.

Abstract: A tire cavity noise absorber has a body of sound absorbing material and a support. The absorber is arranged such that, when installed in a tire cavity and the tire is stationary, the support supports the body of sound absorbing material in a position spaced from the inside circumferential wall of the tire. The support may be flexible and allow the body of sound absorbing material to expand towards and contact the inside of the tire when the tire rotates.

Abstract: A tyre cavity noise absorber has a body of sound absorbing material and a support. The absorber is arranged such that, when installed in a tyre cavity and the tyre is stationary, the support supports the body of sound absorbing material in a position spaced from the inside circumferential wall of the tyre. The support may be flexible and allow the body of sound absorbing material to expand towards and contact the inside of the tyre when the tyre rotates.

Abstract: A rotor disc (1) for a disc brake and the like comprises a circular substrate (2) made of a thermally conductive material, and two superposed coating layers (3) and (4) disposed on both outer circular faces of the substrate. The outer coating layer (3) is made from a high thermal conductivity and high wear resistant material such as carbon silicon carbide composite or metallic type material. The inner coating layer (4), is made from a thermally insulating material such as zirconia or other ceramic material. The dimensions of the substrate and layer and the material from which they are made may be tuned for optimum performance. The inner layer (4) operates to protect the substrate from the heat and high temperatures generated at the outer surface of the disc (1) in use.