This is the Yeah Racing 30x30x10mm Aluminum "Tornado Plus" High Speed Cooling Fan. This fan features a full aluminum case to help dissipate heat in hot conditions. Plus, the aluminum case helps to improve durability as well. dual ball bearings and is great for motors, ESC's and multiple other applications. The case has a small relief in the side to allow the fan case to sit flush, and the board is exposed to allow easy re-wiring. Plus, this fan is capable of 2S LiPo (8.4V) operation!
Bearing: Dual Ball Bearing
Operating: Voltage 5V - 8.4V
Fan Speed: approx. 14,000 RPM after 3 minutes of rotation
Max Air Flow: 5.5 CFM
Used this with the Exotek Angled Clamp.
The fan is loud but it works very well. I am using this on my Traxxas Rustler 4x4 VXL.
Using one 4000mah battery motor temps were pushing 220 degrees fahrenheit with no fan.
I originally tried another popular brand but the fan plastic shroud warped causing the fan to get stuck.
Anyway this took temps from 220F down to about 155f. haven't measure anything over 160 since.
It does seem like it takes a little time off my run because of the extra power drain but I think this might just be in my head.
Great fan highly recommended.