Cool down with this ultra-efficient mini-fan! This impeller was designed based on CPU cooling fans. It was the most efficient impeller design in its class.
It was designed specifically for this motor:
Dayton® No. 4M299 Fan/Blower Motor- 3.3 inch Diameter, Shaded Pole, Open
1/70 horsepower, 3000 RPM, Clockwise Rotation Facing Shaft
Volts 60Hz: 115 Full-Load Amps: 0.7
Shaft Dimensions: 1/4 x 1 1/8inches
(additional motor information can be obtained from the following URL: http://www.grainger.com/Grainger/items/4M299)
In case the original one has become a little too noisy: housing to use a standard 40 x 40 x 10 mm brushless 12V PC cooling fan* to suck cabine air to the temperature sensor of the Porsche 944 which is located behind the glove-box. The material is Nylon (white, black, or filled with aluminium particles).
This is a 60mm diameter, 26 blade rotor designed after the pegasus fan. It is intended to supply a bucket load of static thrust. If purchasing this, you MUST infuse the printed model with good quality epoxy to bind the material and give it as much strength as possible otherwise it will disintegrate first spool up!
*** You have been warned!***