The technical virtuoso at Ashima, Wayne Moore, had a couple of interesting rotors on display in his booth at Interbike. He has been making small incremental changes to the long waited Matrix rotor, adding some crimping to hold the steel braking surface and aluminum carrier together. The Matrix performs the same sort of trickery as the Shimano ICE system, combining steel and aluminum together, using each of their unique properties to make a well performing rotor.
He has also been playing with a plastic fan, that can be retrofitted between the hub and rotor, to provide a small cooling effect. He figured that it only takes a minute difference, perhaps 5-10%, to make a significant effect to the rotor heat dissipation. The most likely application, we be for Freeride and Downhill usage, where vast amounts of heat can be created, and warping and fade issues can have performance affects. It will be interesting to see how the unit pans out?
Spider Rider Rotor
The prototype Spider Rider is meant for the Freeride and All Mountain riders, who creates more heat during extended downhills and harder braking. The rotor uses the same basic design of the Martix, which is the steel braking surface combined with a center aluminum carrier. During extensive testing, Wayne found that the major portion of the heat extended just a short distance past the braking surface, which was due to the poor heat conduction of the steel. So he sandwiched in the steel a short distance into the aluminum carrier, creating a blend of lightness, strength and heat dissipation. The design is pretty intriguing, and I am looking forward to testing one out. The weight should be somewhere in the 100 gram range for 160mm, which isn’t bad for its functionality and usage type. I will have to ask him if the rotor was named after the Japanese TV show Spider Riders?