View Full Version : Fan Shrouds Really Do Work
[XC] MarioMaster
03-17-2006, 06:05 PM
When I had set up my water cooling system, I had just slapped my fan on top of my heatercore, and it worked ok.....But a few days ago I was bored so decided to chop up a box and make my ghetto cardboard fan shroud. You can notice that I didn't painstakingly try and eliminate every possible spot where air could leak, but it seems to have actually helped. Idle temps have dropped by as much as 5-10'F, same fan, same speed. And once again, please excuse the crappy pictures from my crap camera. Temps may seem dramatic but my CPU runs hot.
http://img238.imageshack.us/img238/4753/dsci02130gv.jpg
fareastgq
03-17-2006, 06:56 PM
your missing the pix
[XC] MarioMaster
03-17-2006, 06:59 PM
isn't that one good enough?
thunderstruck!
03-17-2006, 07:04 PM
I can see it! Very ghetto.
n00b 0f l337
03-17-2006, 08:08 PM
Not even the shroud but your using more of the surface area now.
[XC] MarioMaster
03-17-2006, 08:35 PM
yea that too :)
fareastgq
03-17-2006, 09:06 PM
looks like your pushing eh? you mind switching that fan around and tell us if it makes any diff in your temps? run prime or somthing with both of them set both ways, I'm about to test it on my rig myself, just wondering what it would do to yours.
ReD.SkY
03-17-2006, 11:28 PM
how big is that fan? 80mm?
bigval
03-17-2006, 11:31 PM
Slap a bigger fan on that puppy man!
JoeBar
03-18-2006, 05:47 AM
Slap a bigger fan on that puppy man!
I agree!
Yea, put a nice 120 x 38mm high-speed panaflo on it to increase static pressure & pull some real air through it!!! :D
[XC] MarioMaster
03-30-2006, 05:58 PM
Heh, it might, but I like quiet. I think the fan is a 90mm, not small but not big. I had a 120 on it before but both of my 120's are noisy, one the bearings are bad and the other the motor is just noisy. It works well as it is, with the fan running at low RPM it still pushes a large amount of air. The system doesn't put out much heat so I really don't need a big fan.
u must have had some bad 120mm fans. try som good one like yate loons. moves more air and are realy quiet....
moonlightcheese
03-30-2006, 09:49 PM
they make silent 120mm fans lol. if silence is what you are after... no wonder you were getting such poor temps and why a shroud helped so much. you were only blowing are over less than half the surface area.
looks fine though, even with the 80mm, the shoud and fan together will be sufficient cooling. nice job.
Butcher_
03-31-2006, 04:20 AM
looks like your pushing eh? you mind switching that fan around and tell us if it makes any diff in your temps? run prime or somthing with both of them set both ways, I'm about to test it on my rig myself, just wondering what it would do to yours.
Axial fans pull better than they push, so you should set up a pull config if possible.
creidiki
03-31-2006, 04:33 AM
It depends on the rad butcher. On PAs, for example, push is 2% better than pull.
moonlightcheese
03-31-2006, 04:56 AM
who gives a flying f*ck. i'm so sick of hearing "but you'll get .0002C better temps if you pull rather than push"
/rant
sorry... had to say something. it just gets on my nerves. at the end of the day, who really cares? just do what fits and whatever works.
creidiki
03-31-2006, 04:59 AM
Well, the differences are generally unmeasurable with PA/MCR/BIPs, but quite marked with BIX/HE/Cores.
moonlightcheese
03-31-2006, 05:02 AM
Well, the differences are generally unmeasurable with PA/MCR/BIPs, but quite marked with BIX/HE/Cores.
that is false. i owned a heatercore 2.302 and tried both. it's also immeasurable. i'm willing to bet my computer that it is less than 0.1C difference across the board. want to take me up on that bet?
creidiki
03-31-2006, 05:05 AM
Nothnx, ill take your word for it. ;p
As always, the best answer is "do both, if theres a difference do the best otherwise do whats easyer"
chinkgai
03-31-2006, 12:47 PM
no wonder you were getting such poor temps and why a shroud helped so much. you were only blowing are over less than half the surface area.
immediately what i thought when i read his post...rofl
KoHaN69
03-31-2006, 04:23 PM
Why do you need a shroud, when you can use a 120mm fan?! :confused:
well it removes the dead center under the motor and in corners....
edit: and a 120mm fan isnt big enough for my heatercore....
Viktor
03-31-2006, 04:49 PM
Is it recommended to use a shroud with a BIX 2 ?
I'm using San Ace fans and the center of the fan is really big so I guess there's alot of dead space there.
Thing is that the fans already is a couple of mm from the fins ?
oh and a shroud could help on the noise! when the fan spinns right above the fins it creates a lot of turbulence! but it wont be radical, just marginal...
[XC] MarioMaster
03-31-2006, 05:44 PM
I do need to order some better fans but for time being what I have is fine. Heatercore fans aren't the problem, I am running with crap thermal paste.
Butcher_
04-01-2006, 07:00 AM
It depends on the rad butcher. On PAs, for example, push is 2% better than pull.
2% is below the accuracy of most any reviewer on the net. Where'd you get these figures?
creidiki
04-01-2006, 07:16 AM
Cathar
and there was silence....
..... I really like those jugs eXa.....
creidiki
04-01-2006, 08:15 AM
Well, regardless of the accuracy of the meaurements, he makes a valid point in a way - its certainly unmeasurable for onboard sensors, and bound to get drowned out by ambient chnagees, bends in tubing, mount quality, air humidity changes & whatnot.
So much like for loop order, where the answer is just "whatever makes it shortest" the answer for fan position is just "whatever is easyest" in all practical senses.
madmaxx
04-01-2006, 04:41 PM
me too! :D
<<c avatar:banana:
MaxxxRacer
04-02-2006, 03:26 AM
eXa's GF's jugs FTW!
*looks at madmaxx's avatar*.. lol
For Teh Win!!!
which YOU certainly have sunshine :D
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