Mountain Bike rotor centrifugal cooling fan

This is a centrifugal fan I designed and mounted to my mountain bike to cool my brake rotor as I ride. The fan mounts directly to the back of the flange on the hub. I had to replace the rotor bolts with ones that are 18mm long so that they would protrude out the back of the flange and engage the fan. This is built specifically to mount on my bike with little clearance so I can/t comment on the compatibility with any other hub/brake set up. I'm running stans hubs with 180mm icetech rotors and