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is there a standard computer fan that spins clockwise? - Page 2

post #11 of 14
good idea. i'm interested in seeing what happens. Radiators with push/pull could improve a lot, and fan manufacturers can make special two-packs for more money
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post #12 of 14
Quote:
Originally Posted by psyclum View Post
unfortunately, the airflow on the contra-rotating fans need to blow in the same direction. your experiment had them blowing against each other thats why the results were disappointing.
What? Do you really believe that I put 2 fans blowing at each other on my CPU? Same direction of airflow, mate
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post #13 of 14
Thread Starter 
Quote:
Originally Posted by ehume View Post
Note - whenever I have put two CCW fans togehter airflow suffers - usually quite badly.

Papst makes a clockwise-rotating fan. When I put it up to a CCW-rotating fan it did not reduce airflow; but it did not improve airflow.

According to a paper by Sanyo Denki engineers the trailing fan in a contra-rotating pair adds to the static pressure, not airflow (cfm). And like vanes, the trailing fan in a CR pair improves directionality.

Arctic Cooling cage-type fans generally rotate clockwise.

For CR fans, check this.
OMG i have no idea the fan is already in production that's exactly what i was looking for TYVM

i knew the cfm wouldn't improve much, I was simply looking for more pressure at lower RPM. tho at $100 per fan, I think i'll have to hold off on this one

for your amusement i found a interesting little vid on that fan


it moved a textbook

I just noticed that it is a 86.4 watt fan no wonder the guy has to build his own fan controller
Edited by psyclum - 10/16/11 at 8:37pm
post #14 of 14
Quote:
Originally Posted by psyclum View Post
OMG i have no idea the fan is already in production that's exactly what i was looking for TYVM

i knew the cfm wouldn't improve much, I was simply looking for more pressure at lower RPM. tho at $100 per fan, I think i'll have to hold off on this one

for your amusement i found a interesting little vid on that fan

http://www.youtube.com/watch?v=XDf1IrR6BqY

it moved a textbook

I just noticed that it is a 86.4 watt fan no wonder the guy has to build his own fan controller
He could have hooked up the PWM controls to his cpu fan header, while drawing power from his psu. Muddocktor does it that way, iirc.

BTW - +rep for finding the vid.
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