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I do not understand why computer fans are so expensive - Page 3

post #21 of 46
they're not really overpriced considering the labor and shipping handling costs.
    
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post #22 of 46
I think the reasons for the high price includes the bearings, the way the motors are designed and operate, the longevity of the motors, whether or not its PWM, whether or not its an industrial grade one, like the industial grade fans are WAY more expensive than a non industrial grade because they last longer, have better parts, and usually make more CFM's and static pressure. Same goes for server fan units. They are designed to 1. have high amounts of airflow, 2. have alot of static pressure, and most important 3. last for a long period of time running 24/7. Also a normal 20 inch box fan isnt balanced, and they dynamically balance a computer fan much like your mechanic would do with your tires on your car. Ever drive with an unbalanced tire? Thats like using an unbalanced fan in your pc. Cept with tires you feel the unbalance as opposed to hearing it in your pc. pretty much a dynamic balance is they take the fan blade/motor assembly, put it onto a special balance machine, spin it, and where its unbalanced, they take plastic off of the heavy side of the fan, then spin it again to make sure its balanced.
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post #23 of 46
to be honest I'm kind of disappointed there's no 20" fans on the market with LED lights in them. I'd pimp one of those in my window.
    
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post #24 of 46
Quote:
Originally Posted by DJZeratul View Post
to be honest I'm kind of disappointed there's no 20" fans on the market with LED lights in them. I'd pimp one of those in my window.
Im having an idea: mount some huge super bright LEDs into it!
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post #25 of 46
Quote:
Originally Posted by pyro_dude View Post
Im having an idea: mount some huge super bright LEDs into it!
hmmm... You'd just need to add a DC transformer and it'd be good to go. I must research this.

To really do it right you would have to use RGB LEDs and a micro-controller.
Edited by Philistine - 5/15/11 at 5:28pm
post #26 of 46
Quote:
Originally Posted by Philistine View Post
hmmm... You'd just need to add a DC transformer and it'd be good to go. I must research this.
some of those box fans already have a transformer in them
    
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post #27 of 46
Quote:
Originally Posted by Philistine View Post
hmmm... You'd just need to add a DC transformer and it'd be good to go. I must research this.
Simple: find a low voltage DC wall adapter/charger you dont use and modify it to run colourful LEDs for your box fan!
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post #28 of 46
Quote:
Originally Posted by DJZeratul View Post
some of those box fans already have a transformer in them
Need to look into that further. If so you'd just need the appropriate resistor to directly connect the LEDs.

Quote:
Originally Posted by pyro_dude View Post
Simple: find a low voltage DC wall adapter/charger you dont use and modify it to run colourful LEDs for your box fan!
That's what I was thinking. I have a few laying around.
post #29 of 46
computer fans..... high demand, medium supply, high price.
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post #30 of 46
When you look at industrial fans aimed at things like servers, they cost something like $10 in quantities of 1,000 and more.

Tiny little ball bearings. They each have a PCB. All the blades, frames etc. It's a miracle that we can get them as cheaply as we do.
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