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Need help to chose 140mm fan for 280 radiator

post #1 of 18
Thread Starter 
Hi all,

I am looking for the best 140mm fan for my Koolance 280 radiator on top of my case. The radiator will mount on top of my case.

This radiator has 30 FPI , so I guess I need fans with high static pressure, right? But how 'High' is enough for the rad then? I was thinking of the following 2 fans:

1. Koolance 140X25mm 91CFM with 1.9mmH2O static pressure

2. Yate Loon D14SH-12


The price is not important to me, however, I was just wondering which one has better performance and appropriate for my rad on top of the case. I do not have the clearance to do push and pull, so I will choose pull or push.

The Yate Loon one has better static pressure? Unfortunately, it is sleeve bearing. I've heard that sleeve bearing is not recommended as rad fans if they are horizontally mounted on top. Is that true? Is that true?? If it is true, I am going for the koolance fans, but I am not quite sure if 1.9mm static pressure is enough for that high FPI rad.frown.giffrown.giffrown.gif

Is there any other choice for me? headscratch.gif:headscrat:headscrat:headscrat:headscrat

Many thanks for your help!!!!!!
post #2 of 18
If you're not worried about money, then just go with a push/pull setup. Two fans working in conjunction will perform better.

I can't confirm or deny the sleeve bearing issue, but I have used some 80mm front ball, rear sleeve bearing fans for 7-8 years without a single one failing. I wonder if the larger blade size is causing undue stress on sleeve bearings. You could also opt for 120mm to 140mm adapters, which will act as a quasi baffle, which should improve performance. I still suggest push/pull.
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post #3 of 18
Quote:
Originally Posted by UnexplodedCow;13354662 
If you're not worried about money, then just go with a push/pull setup. Two fans working in conjunction will perform better.

I can't confirm or deny the sleeve bearing issue, but I have used some 80mm front ball, rear sleeve bearing fans for 7-8 years without a single one failing. I wonder if the larger blade size is causing undue stress on sleeve bearings. You could also opt for 120mm to 140mm adapters, which will act as a quasi baffle, which should improve performance. I still suggest push/pull.

He just said he doesn't have the clearance for a push/pull setup.

I do agree with your other idea though provided he has the room for it. Running 120's with an adapter will help with airflow and there is a much larger selection of 120mm fans to choose from.
post #4 of 18
Thread Starter 
I would go with push/pull if I had enough clearance. Only like 3mm space for me, so not able to do push/pull.
post #5 of 18
Thread Starter 
Quote:
Originally Posted by joeyu3000;13354722 
I would go with push/pull if I had enough clearance. Only like 3mm space for me, so not able to do push/pull.

Maybe not for 140 to 120 adapter either?
post #6 of 18
Thread Starter 
Quote:
Originally Posted by joeyu3000;13354722 
I would go with push/pull if I had enough clearance. Only like 3mm space for me, so not able to do push/pull.

I mean 30mm space.
post #7 of 18
Have you considered placing the fans outside the case? I did this on mine for a push/pull setup, using 38mm and 25mm thick fans, no baffles/shrouds. I prefer the 120mm size since it seems to have better static pressure.
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post #8 of 18
Yeah, not enough room for an adapter either then. I am curious about this as well. I'm using the stock Lian Li 140mm fans that came with my case at the moment. Wonder how these would do.
post #9 of 18
Quote:
Originally Posted by bavarianblessed;13354822 
Yeah, not enough room for an adapter either then. I am curious about this as well. I'm using the stock Lian Li 140mm fans that came with my case at the moment. Wonder how these would do.

I have some 1900 RPM Scythe Flex 120mm fans, and will admit they are pretty well made. I like their sound more than Yates, too. However, at $18 a pop for what you linked to is asking a bit, especially when shipping hasn't been included.
Edited by UnexplodedCow - 5/2/11 at 12:05pm
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post #10 of 18
i have this one on my SR1 and like it a lot;
http://www.frozencpu.com/products/12099/fan-784/Scythe_KAMA-FLEX_135mm_x_25mm_Fan_-_1600_RPM_w_S-FDB_Bearing_140mm_Mount_SA1325FDB12H.html
Yate Loon you mention is great fan
    
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