Ventilation and cooling system for brake disk has spokes with chamfered edges between hub and friction surfaces at rim shaped to promote flow of air through apertures between spokes

摘要

The brake disk has an array of circular holes (32) through the rim (31) with the friction surfaces (3). The rim is connected to the hub (1) by curved spokes (2). The edges of the spokes (21) are chamfered so that they act as fan blades to draw ventilation air through the disk as it rotates. The hub has through bores for fastening bolts and has a star-shaped central aperture.