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Stacking fans...

R

RockGuitarDude

Senior member
Has anyone tried stacking fans by screwing them together so that they both blow the same way? If so, has it yielded better or worse performance?
 
Yes it's been done. There isn't any real benefit because the fans start to fight each other and turbulent air from one fan goes into the other, etc. It just introduces problems and extra noise.
 
Wouldn't work as you could never match their RPM or blade position perfectly. It would be funny though.
 
I got a brain buster for yall now. What if I epoxied a balde set from one fan to another so that they are stacked and the rpm and bade psoitions match perfectly. Woud I get any increase in performance? I am thinking like a jet engine now, a bunch of blade sets all being turned on the same shaft. maybe put a 10mm gap between them. cr@p now I wanna try it.
 
that i don't know. i do know that stacked do have problems with turbulance. this can be avoided easily by slightly seperating em with the just the outer case of some old fan u can hack up. the final fan will have twice the static pressure, but the same maximum potential flow from a single fan. better for cramming air through somewhere.
 
Originally posted by: DerwenArtos12
I got a brain buster for yall now. What if I epoxied a balde set from one fan to another so that they are stacked and the rpm and bade psoitions match perfectly. Woud I get any increase in performance? I am thinking like a jet engine now, a bunch of blade sets all being turned on the same shaft. maybe put a 10mm gap between them. cr@p now I wanna try it.
Click to expand...

Hmm, i wouldnt try that personally. You might burn out the motors of the fans much more quickly than normal. What if the voltages you were giving to the fans varied ever so slightly, or the voltage fluctuated slightly in a different way for each fan?
 
Originally posted by: Tiamat
Originally posted by: DerwenArtos12
I got a brain buster for yall now. What if I epoxied a balde set from one fan to another so that they are stacked and the rpm and bade psoitions match perfectly. Woud I get any increase in performance? I am thinking like a jet engine now, a bunch of blade sets all being turned on the same shaft. maybe put a 10mm gap between them. cr@p now I wanna try it.
Click to expand...

Hmm, i wouldnt try that personally. You might burn out the motors of the fans much more quickly than normal. What if the voltages you were giving to the fans varied ever so slightly, or the voltage fluctuated slightly in a different way for each fan?
Click to expand...

I think you mis-understood, I talking about only one fan technically but adding a second set of blades ot the one fan by glueing them on. Only one motor.
 
Originally posted by: DerwenArtos12
Originally posted by: Tiamat
Originally posted by: DerwenArtos12
I got a brain buster for yall now. What if I epoxied a balde set from one fan to another so that they are stacked and the rpm and bade psoitions match perfectly. Woud I get any increase in performance? I am thinking like a jet engine now, a bunch of blade sets all being turned on the same shaft. maybe put a 10mm gap between them. cr@p now I wanna try it.
Click to expand...

Hmm, i wouldnt try that personally. You might burn out the motors of the fans much more quickly than normal. What if the voltages you were giving to the fans varied ever so slightly, or the voltage fluctuated slightly in a different way for each fan?
Click to expand...

I think you mis-understood, I talking about only one fan technically but adding a second set of blades ot the one fan by glueing them on. Only one motor.
Click to expand...

My apologies. I did infact misunderstand you. Well, if you take a look at the CFM increase from 25mm thick fans to 38mm thick fans... 😛
 
Originally posted by: Tiamat
Originally posted by: DerwenArtos12
Originally posted by: Tiamat
Originally posted by: DerwenArtos12
I got a brain buster for yall now. What if I epoxied a balde set from one fan to another so that they are stacked and the rpm and bade psoitions match perfectly. Woud I get any increase in performance? I am thinking like a jet engine now, a bunch of blade sets all being turned on the same shaft. maybe put a 10mm gap between them. cr@p now I wanna try it.
Click to expand...

Hmm, i wouldnt try that personally. You might burn out the motors of the fans much more quickly than normal. What if the voltages you were giving to the fans varied ever so slightly, or the voltage fluctuated slightly in a different way for each fan?
Click to expand...

I think you mis-understood, I talking about only one fan technically but adding a second set of blades ot the one fan by glueing them on. Only one motor.
Click to expand...

My apologies. I did infact misunderstand you. Well, if you take a look at the CFM increase from 25mm thick fans to 38mm thick fans... 😛
Click to expand...

thats what I am thinkin.
 
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