How would changing a fan body affect static pressure?

Soldato
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Hi all

The thread title is a stupid question but I shall ask it anyway: if I took a 25mm thick fan and replaced the outer shell with a 10mm thick version, would I ruin the static pressure?
 
I don't know for certain but I'd say my dodgy physics would say yes as the cylinder of air the fan has to push is less then half the capacity it should be therefore you could expect to push less than half the amount of pressure.
 
Cheers dude, it does make sense.

It's a completely bonkers, pie-in-the-sky idea anyway. Perhaps my thought process shouldn't have progressed past "but I can only fit a 2x80mm radiator in there" :p
 
Thinner fans have always lot lower pressure.
Also if you removed part of frame/cut it full of holes that would lower pressure by letting air leak out radially.
 
As a basic idea: yes, the fan frame impacts the relations of flow, pressure, speed, noise etc.

Chopping the frame away will almost certainly make performance worse as you're defocusing the active air space. But things like graphics card fans and Intel stock coolers have an open design so it's not the end of the world...
 
The crazy idea is this:

Alphacool XT45 160 radiator in the bottom of an In Win Chopin. The radiator sits where the existing PSU does, which leaves an estimated notverymuch mm underneath, through the body and skin to the floor. Since the aluminium skin is only 84mm wide, just chopping out space to fit a 80mm fan as-is means breaking the case. But, a 76mm hole in the skin combined with a 3D-printed custom 10mm round body replacement for a pair of Noctua NF-A8s could just about squeeze in.

But this is all just crazy musings for something that will probably never happen. The Chopin in silver for my server would make a great pairing for Asteria II's In Win 901 (if I ever finish the bloody thing) so I'll probably get one anyway and just have a measure. But then, that's how Asteria II started :p

"I'll just see if my crazy idea is viable" *checks* "bugger, it is" *3 years later...*

Cheers for the replies everybody!
 
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