Straight (non-curved) Vanes: (For general street brake applications)
vane: This is the most popular, easy and straightforward vane type to
make. Straight vane rotors are lighter and have better cooling capabilities than solid rotors. This
is the design of most of the front rotors supplied by car manufacturers. Some higher-end models also use vaned rotors
for the rear. The rear rotors are usually thinner than those in front.
Pillar vane: Instead of straight vanes, patterned random
formations (dots or lines) are cast between the two friction plates. The Mistubishi EVO 8 front OE rotor is made with pillar vanes.
||Variable vane: Similar idea to pillar vanes, but vary in
different patterns such as DBA’s patented
Kangaroo Paw design.
All of these designs are non-directional, meaning both left and right rotors are constructed from
the same casting. Do not confuse this "non-directional" (straight) vanes with the
"directional" slotting or drilling. In other words, a pair of straight vane
rotors can be machined to have directional slots or drillings.
For example a manufacturer can claim a "directional" (left/right) rotor based on its surface slotting or drilling, but
the cooling vanes are straight, or "non-directional".
All of the above designs can save cost for the manufacturer, as they require only one set of tooling and are
relatively easy to produce compared to curved-vane rotors. This also makes inventory control easier.
Very few models are known to come with one-piece curved vane rotors. Some of these include the BMW
M3, Corvette C6, and Toyota Supra Turbo. RacingBrake selectively upgrades
per application list
from OE straight vanes to curved vanes.
Curved Vanes: (Primarily for two-piece rotor construction,
built for Motorsports tracking, and professional racing applications)
Most of our competition has only one vane count (ie. 36, 42, 48, 52 or more).
RB’s products have variable vane count (inner-36, outer-54, total-72). We even vary
the configuration of vanes. The vane count is not the only important factor; the design is also critical. RB's vane count and vane designs optimize the cooling effect and achieve an uniform disc temperature
across the brake surface.
|This article has been viewed 26671 times since posted.
Last Updated: 3/07/06