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Two-piece rotor upgrade provides the following advantages:
Lighter rotor (12-16% weight reduction varied with the size and design) than original one-piece rotor – meaning lower spinning weight.
Cooler disc - due to higher heat dissipation rate of aluminum hat than cast iron
True full floating (not all out in the market see design description) allows the disc to expand and contract freely without stressing the hat therefore prevents the disc from warping or cracking.
Replace only the rotor ring, the hat is reusable therefore although the initial cost is higher but the operating cost over the time could be lower than one-piece rotor.
Type of Air Ventilation Vane:
Solid disc (non ventilated)– Mainly for light duty such as rear rotor or drag race.
Straight vane (non directional) – For medium service duty (usually up to 12”).
Curved vane (directional) – For heavy service duty (from about 12” up to 15”).
Convergent vane (uni-directional)– Our patent pending design disc is lighter but stronger and more efficient in air circulation than conventional curved vane.
Surface mount: (Traditional design)
Air ventilation is not very efficient because it admits air only from one side (inboard).
Stress load is unbalanced as load center is on the outboard friction surface.
Heat load to hat is solely from outboard disc surface and is unbalanced.
Heat transfer is directly from outer disc surface to rotor hat which heats up rotor hat more rapidly.
Center Mount: (RacingBrake’s Patent Pending design)
Convergent vane pumps more air than conventional curved vane.
More efficient air ventilation – Center mount provides air inlets from both inboard and outboard.
Heat load on rotor hat is balanced from both sides of friction surfaces.
Heat transfer from disc surface to rotor hat is greatly reduced due to longer distance to travel.
Stress load is balanced due to the mounting surface is at the disc center.
Disc is uni-directional, hat can mount to disc on either side without having to identify left or right yet its truly directional, avoid mix-up in installation, very innovative and friendly for installation and parts inventory.
Material:
Rotor Ring: Casting with our own tooling from high alloyed iron with proprietary heat treatment is our best assurance for lasting performance in racing industries that you can expect.
Rotor Hat: Forged 6061-T6 aluminum alloy with our own tooling for better strength and rigidity than billet (extruded) supplied by others.
Machining and Surface Coating:
Disc is fully machined (including mounting tabs), dynamic balance to <5gm-cm.
Disc – EDP (Electro-Deposition Paint) see detail description, disc friction surface receives final double cross grinding to assure high precision in parallelism and thickness variation, easy to break-in.
Rotor hat coated with EDP to protect the aluminum surface from oxidation, unlike competition’s anodizing which is basically just changing the surface color with no protective coating.
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