I have a desk fan that is normally used to cool off a human. I was going to remove the front cover or side cover of my pc case and set the fan on the desk right next to the case. This will blow way more air through there than any dinky little pc fan. My question is should i pull the fan plunger up so the fan is just locked and blowing straight in, or should i let the fan rotate side to side. If locked, what should i aim it at? The cpu, the vga card or what? Also should i just plug it into the wall, or should i try to cut off the cord and splice it into a molex connecter or something? The main reason for doing this would be to try and increase the fan RPM. The fan turns at about 800 rpm, and i was thinking that if i wired it to the motherboard, it would turn it at the rpm of a case fan like say 5000 rpm. At this rpm, I understand that their will be some centrifical blade flex, but do you think it would be enough to cause the fan blade to come flying off and tear through the inside of my PC case like a ninja throwing star on crack? Would that void my desk fan warranty to run at those rpms?
Supercooling
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chuckshissle
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I have about the same fan as you have and I must say it's a good cooling for the pc. I have tried the fan and just sit center and have it turn side to side and cooled down the inside components. If you don't mind having a dust collector pc and cleans it every month then it's a good cooling method.
chuckshissle
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apt403
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If you did that you would probably, 1. destroy at least the mobo, maybe you entire pc. 2. completely destroy the fan. 3. you might set you house on fire when the pc & fan go up in smoke. and 4. im 90% certain that the fan wouldnt even work after that.
first of all it would burn out the fans motor to run it at that speed, and if you spliced the fans power cord to a moltex cable inside the pc the fans warrenty is already out the window.
Good cooling method as long as you only have fans in your computer that blow out as opposed to sucking in. Leave it at the centre of your case, pointed in the general CPU/Video card/Northbridge/RAM area of your case.
Don't try splicing it or doing anything like that, there are a few reasons for this.
1. 120 Volts AC > 12 Volts DC. Period. Not only is it 10 times the voltage, it's also running at 60 Htz as opposed to no Htz, and the fan is made to run at 60 Htz.
2. It won't make your fan spin faster, as it's pushing more power through, in fact, it's pushing less through because of the lower voltage. The reason why your case fans spin at such a fast speed, is because they're much smaller, and their motors were designed to run at fast speeds, whereas your larger fans motor is designed to spin slower, but with more torque.
3. You'd probably fry the fan header on your motherboard, if not your motherboard itself. The fan probably uses around 1/2 an amp to an amp of power, so that means 60 to 120 watts of power. The fan headers on your motherboard are designed to run at around 1 amp at 12 volts, and trying to push that much through it at one time would hurt something.
4. You'd void the warranty on the fan... big time.
Don't try splicing it or doing anything like that, there are a few reasons for this.
1. 120 Volts AC > 12 Volts DC. Period. Not only is it 10 times the voltage, it's also running at 60 Htz as opposed to no Htz, and the fan is made to run at 60 Htz.
2. It won't make your fan spin faster, as it's pushing more power through, in fact, it's pushing less through because of the lower voltage. The reason why your case fans spin at such a fast speed, is because they're much smaller, and their motors were designed to run at fast speeds, whereas your larger fans motor is designed to spin slower, but with more torque.
3. You'd probably fry the fan header on your motherboard, if not your motherboard itself. The fan probably uses around 1/2 an amp to an amp of power, so that means 60 to 120 watts of power. The fan headers on your motherboard are designed to run at around 1 amp at 12 volts, and trying to push that much through it at one time would hurt something.
4. You'd void the warranty on the fan... big time.
What if i rubbed some arctic silver paste on the fan blades or something??? What if i spliced the wires very carefully?
I'm not worried about a fire, my house has a sprinkler system. So i have liquid cooling as a failsafe back over. I will set the PC case right under one of the sprinkler heads.
I'm not worried about a fire, my house has a sprinkler system. So i have liquid cooling as a failsafe back over. I will set the PC case right under one of the sprinkler heads.
The fan is way to big to fit inside the actual case. I bought it at walmart, they are really good about returns, as long as it is not to obvious how i was using the fan. I am not sure about all the electrical mumbo jumbo that you said, but it would seem to me that 10X the power means 10X the rpm. I'm not sure if by AC DC you are talking about Anti Cavitation or Displaced Cavitation, but the fan will be in air not water ... so even at 8000 rpm, i do not think that cavitation would be an issue.
apt403
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what would rubbing AS5 on the fan blades do? besides making the fan blades you silvery.
it wouldnt work because the voltage is all wrong, its like trying to use rocket fuel in a moped, its just not happening.
wait, you have liquid cooling? what do you need a fan for? the liquid should be more then enough to cool your system.
- Sep 14, 2005
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Get a nice AC powered unit with a multi-speed button selector, or a rheostatitically controlled fan speed... Then use the speed that suits.
If you need to ( or really feel the urge to) splice in any wires, splice the power connector of the fan into the AC power connector of your PSU...
My 2p...
If you need to ( or really feel the urge to) splice in any wires, splice the power connector of the fan into the AC power connector of your PSU...
My 2p...
Quite frankly I think this is a wonderful idea of innovative thinking. Its chaps like you that are the pioneers of technological advancement.
I wish I had thought of this when I designed my bespoke cooling system.
Like you I went for the "more cool air in the case scenario" but never thought of a large fan.
I decided to strap my PC to my rotary washing line in my back garden and connect it to a transit van starter motor running off of a 28 volt lorry battery. My theory being if I could spin it fast enough it would act as a ram air cooler.
Anyway the work was finished and with nervous anticpation I started up the PC and started coretemp so I could monitor the effects of my new cooling system.
With the system idling nicely I connected up the starter motor and made ready for some Low LOW temps.
Unfortunately things started to go wrong almost instantly.
The spinning started in earnest and for a nano second I thought I noticed a drop in idle temp, although I was unable to confirm this as it what at that point I "ran out" of VGA cable due to the spinning and my monitor was ripped off of the table and out into the garden closely followed by my keyboard, mouse, 7.1 surround system and cordless router.
My first reaction was to run into the garden to save my precious monitor, but soon gave that up as I was nearly decapitated by it and the rest of the perpipherals spinning round like a technological sythe of death.
Unfortunately when I first installed my rotory dryer I never sank it into a concrete base and the rotational speeds and the mass at the end of one of its arms was starting to put it somewhat out of balance. Sadly the base of the dryer broke loose and the whole lot, peripherals and all, took of for pastures new ever the garden fence and into my neighbours jacuzzi.
Still Ive learned from my mistakes and am now working on my new system -
I wish I had thought of this when I designed my bespoke cooling system.
Like you I went for the "more cool air in the case scenario" but never thought of a large fan.
I decided to strap my PC to my rotary washing line in my back garden and connect it to a transit van starter motor running off of a 28 volt lorry battery. My theory being if I could spin it fast enough it would act as a ram air cooler.
Anyway the work was finished and with nervous anticpation I started up the PC and started coretemp so I could monitor the effects of my new cooling system.
With the system idling nicely I connected up the starter motor and made ready for some Low LOW temps.
Unfortunately things started to go wrong almost instantly.
The spinning started in earnest and for a nano second I thought I noticed a drop in idle temp, although I was unable to confirm this as it what at that point I "ran out" of VGA cable due to the spinning and my monitor was ripped off of the table and out into the garden closely followed by my keyboard, mouse, 7.1 surround system and cordless router.
My first reaction was to run into the garden to save my precious monitor, but soon gave that up as I was nearly decapitated by it and the rest of the perpipherals spinning round like a technological sythe of death.
Unfortunately when I first installed my rotory dryer I never sank it into a concrete base and the rotational speeds and the mass at the end of one of its arms was starting to put it somewhat out of balance. Sadly the base of the dryer broke loose and the whole lot, peripherals and all, took of for pastures new ever the garden fence and into my neighbours jacuzzi.
Still Ive learned from my mistakes and am now working on my new system -
Athalus_nubie
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Dude, that is freakin awesome! You were so freaking close to pulling it off! I didn't even think about what could happen to my neighbors jacuzzi..... I was starting to think maybe I should just go buy a dadgum Zalman cooler or something, but now I am reinspired to try my wal-mart fan idea! I am glad to be a pioneer in computer development!
still_life
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AdamBomb42
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I'm not sure if your joking or just an idiot. Please allow me to explain a bit. The molex connector inside your computer produces a DC (Direct Current) voltage at 5 or 10 volts, depending on how you connect it. The plugs in your house produces AC (Alternating Current) voltage at about 110-120 volts. So it does not matter how carefully you splice the wires, it's not going to work and you would most likely kill your computer. Just because your fan inside your computer is running at 5000rpms doesn't mean that your wal-mart bought fan will. One of my fans runs at 7000rpms (very loudly) @ 12volts DC and another at 1000rpms @ 12volts DC. Like bigsby explained
If you want to take the side off the case and point a fan into it, then go for it as long as you keep it plugged into the wall socket.
Let us review: Splicing AC devices into a computer is a BAD IDEA.
If you want to take the side off the case and point a fan into it, then go for it as long as you keep it plugged into the wall socket.
So have you actually tried this Einstein? You are basically just throwing out a speculative answer shrouded in a bunch of electronic mumbo jumbo.
The fact of the matter is that you have no clue! People said the guy that invented landing on the moon was crazy and it couldn't be done. Look what happened.
My advice to you = Don't hate the player, hate the game!
The fact of the matter is that you have no clue! People said the guy that invented landing on the moon was crazy and it couldn't be done. Look what happened.
My advice to you = Don't hate the player, hate the game!
DoubleE460
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AdamBomb42
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Frying your computer is the worst that can happen, not to say that it is going to happen. Although I give you 99% assurance that the fan will not work spliced into a molex. If by chance it does spin, it will spin at a very slow rate and certainly not 5000rpms. If you want to try it go ahead, but I wouldn't. I have had electronic training and I do know what I am talking about. If you come here and pose a question then not take the advise, then why post in the first place?
kernalmantis
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kernalmantis
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The best way (however absurd it is) to do htis woul dbe to hook up the fan controller on the fan to the molex on the controller side of the set of pins. then plug in the fan to the wal..however im not sure how much power is transmitted (if any) ove rthe controller board. BTW, calling the numbers of volts, amps, and such "electronic mumbo jumbo" will get you killed if your not carefull.. have you ever had 1000 amps run through you? i dont think so, cause you wouldnt be postin gthis topic and youd be pushing up daisies. 4 milliamps is enough to stop your heart. A welder takes 20-30 amps and will cook you very fast...literally, you will be a charred mass of crap. well almost. You can be zapped by 20000 volts and just be very annoyed (a tazer gun). YOuo dont realize what power does. You probably havent even been zapped by an electrical socket. Especially if your in europe!
- Sep 14, 2005
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Ok, let's help out the OP...
While I think its a stupid idea, the worst thing it will do is wipe out the PSU as the fan under DC will not rotate, and will most likely look like a dead short to the PSU. There may be smoke....
A fan designed for use in a car or van WILL work, but one would have to be wary of the amps it would pull.
While I think its a stupid idea, the worst thing it will do is wipe out the PSU as the fan under DC will not rotate, and will most likely look like a dead short to the PSU. There may be smoke....
A fan designed for use in a car or van WILL work, but one would have to be wary of the amps it would pull.
One real concern that I did have was that the fan would create a disruptive electromagnetic field. I am surprised none of you numnutz brought this up. It is really a product of the large wound electric motor that turns the fan, not the actual fan.
If you want to see what I am talking about, put a house fan anywhere near your router or pc and you will not be able to hit the internet.
Anyways, I might just go buy a zalman cooler. It seems like that might be a little bit safer.
If you want to see what I am talking about, put a house fan anywhere near your router or pc and you will not be able to hit the internet.
Anyways, I might just go buy a zalman cooler. It seems like that might be a little bit safer.
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