Controller Fan
04-19-2011, 06:46 PM
#3
RE: Controller Fan
really? i though fans were most efficent when pulling air through rather then pushing it. Thats why all vehicles with radiators have puller setups rather then pusher.
04-19-2011, 07:21 PM
#4
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RE: Controller Fan
If you look at this image, it shows the fan blowing down onto the ESC:
http://www.teamnovak.com/products/es...ler_1500px.jpg
I would assume it blows down since there's a higher volume of air above than in between the heatsink fins and it's easier to displace the hot air between the fins than draw air upwards from the edges through the tiny gaps between the fins; if that makes any sense. However, it may work both ways.
I think on full scale cars, radiator fans mounted on the back of the radiator are pullers because that's the direction the airflow is already going and it helps draw air in from the front side through the radiator. With crawlers, the air is pretty much stagnant.
http://www.teamnovak.com/products/es...ler_1500px.jpg
I would assume it blows down since there's a higher volume of air above than in between the heatsink fins and it's easier to displace the hot air between the fins than draw air upwards from the edges through the tiny gaps between the fins; if that makes any sense. However, it may work both ways.
I think on full scale cars, radiator fans mounted on the back of the radiator are pullers because that's the direction the airflow is already going and it helps draw air in from the front side through the radiator. With crawlers, the air is pretty much stagnant.
04-19-2011, 09:42 PM
#6
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RE: Controller Fan
On full size cars the vehicle pushing through the air supplies enough air flow that you don't need a pusher. But if you need cooling power at low speeds your best bet is a pusher and puller.
On heat sinks pushing air through the fins is the best way to keep things cool. Pulling air away from them really does not produce enough flow.
On heat sinks pushing air through the fins is the best way to keep things cool. Pulling air away from them really does not produce enough flow.
