120mm fan slows down when upside down

Soldato
Joined
12 Oct 2003
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4,027
Any idea why some antec fans i have slow down when i have them upside down so air is blowing up out the top of the case, i did some testing and they seem to get slower and slower when you angle them, any idea how to fix?
 
Is it possible to take it apart and fix it somehow, i think it might be because the magnet isn't aligned with the coils, gravity is probably pulling it away?
 
No they're not noisy, i can feel some sort of vibration as they spin but when blowing downward it runs great so i don't want to just bin it if i can fix it?
 
Does the fan slow down when blowing upwards with the fan outside of the case?

Could be backpressure on the case.

No i tested it outside the case and angled it around, when the air flow is blowing up towards the ceiling thats when it slows right down, i might be able to fix it myself if i knew how to take out apart.
 
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