Clutch - Special Tuning
Driven Plates - Cerametallic Spring Centre Designed for heavy duty and 'off road' applications the sprung centre cerametallic driven plate nevertheless affords some protection against drive line shocks. A rigid adaptor plate without cushion segments is used. The driven plate incorporates cerametallic pads, as illustrated, which are designed to withstand the high temperatures associated with high energy input competition applications. This type of plate is not normally considered suitable for road use.
ADAPTOR PLATE	Retains damper springs and transmits power to the damper springs.
SPRING RETAINER PLATE	Holds damper springs in position and transmits engine power to the damper springs.
DAMPER SPRINGS	Cushions the drive line against engine vibrations.
SPLINED HUB	Splines slide freely on the first motion shaft whilst having minimal radial clearance.
STOP PINS	Limits the maximum angular deflection of the hub relative to the facings and holds the side plates together.
CERAMETALLIC PADS	Riveted to disc adaptor.
Rigid Centre Cerametallic The rigid type of driven plate is not fitted with any form of drive line cushioning. It is designed for arduous working conditions where the degree of refinement is secondary to strength and durability and offers the heat resistance advantages of the cerametallic pad design. Not considered suitable for road use.
CERAMETALLIC PADS		Riveted to disc adaptor.
DISC ADAPTOR		Transmits the drive to the hub, often pierced to reduce inertia and improve ventilation.
SPLINED HUB		Splines slide freely on the first motion shaft whilst having minimal radial clearance.
Driven Plates - Spring Centre Organic This type of driven plate provides a relatively high level of "comfort" and is suitable for road and low level competition. The design features an adaptor plate and retainer plate that are riveted together with shouldered stop pins. Located between them in slots in the hub flange are damper springs arranged radially around the hub centre. The hub can rotate within specific limits to compress the springs thus smoothing out any torsional fluctuations in the drive line. Damping is provided by friction washers fitted between the hub, retainer and adaptor plate.
ADAPTOR PLATE		Retains damper springs and transmits power to the damper springs.
SPRING RETAINER PLATE		Holds damper springs in position and transmits engine power to the damper springs.
DAMPER SPRINGS		Cushions the drive line against engine vibrations.
STOP PIN :		Limits the maximum angular deflection of the hub relative to the facings and holds the driven plate assembly together.
SPLINED HUB		Splines slide freely on the first motion shall whilst having minimal radial clearance.
CRIMPED SEGMENT		The segments are crimped and so hold the facings sprung slightly apart. The axial cushioning so formed ensures progressive engagement and a greater degree of clutch control without 'snatch'. In addition to this, the axial movement gives uniform distribution of work load over the whole friction surface, thus minimising local areas of high temperature and subsequent tendency towards clutch 'slip'.
FACING RIVETS		Attach each facing to the disc segments.
SEGMENT RIVET		Attach each segment to the adaptor plate.
FRICTION FACINGS		"Organic" material. AP Racing use only the best high performance Non Asbestos materials.
RIGID CENTRE ORGANIC The rigid type of driven plate is not fitted with any form of drive line cushioning. It is specially designed for arduous working conditions where the degree of refinement is secondary to strength and durability. It is less "comfortable" than a sprung centred plate and is suitable for low level competition and road use.
FACING RIVETS		Attach facings directly to the disc adaptor.
SPLINED HUB		Rivetted rigidly to disc adaptor.
DISC ADAPTOR		Transmits the drive to the hub, often pierced to reduce inertia and improve ventilation.
AP racing