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Old 05-02-2007, 06:32 PM   #1
7 Dying Trees
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How to build a cooling system for your rack.

I had this problem where my rivera had no fans to cool the stupid amount of valves all generating heat. It should have had two fans built into it and a metal casing, but alas this was not built into mine which was some custom order for the previous owner's home cinema, so after it did overheat once (and took out the fuses) it became clear that i needed cooling.

The Problem:


Option 1: PC Rack fans. You can buy these at extortionate prices, say 1-200 or so, and they all come in 1U mounting. Usefull if you have the space, rubbish if you don't.

Option 2: Buy a bunch of PC fans, a 12v adapter, one 3U rack panel with fan holes and get busy!

The fan assembly, 3U rack fan panel + 3 akasa 120mm fans


Next up, the rear view:


ant then, with a bit of clearing up and some tape to tidy the wires a little:


And now (the dull part) how to power it:

Simpkly buy a 12V DC adapter, figure out which of the wires is positive and which is ground(or negative), then wire this up to any PC connecter you have that'll fit the fan's power connector. Use this if you aren't sure which is which:

PC And other lovely pinout connection information

and for the lazy:
Power Supply plug 5.25-inch 4-pin Molex

Pin# Color Function
1 Yellow +12V DC
2 Black Ground
3 Black Ground
4 Red +5V DC

And you'll the after some soldering get this:

Now it just needs to be attached to the rack, and then connected with the adapter. Easy.

And now some gratuitous shots of it all in action and glowing red

frontal shot in the light



now in the dark


and then the rear view, reminds me of something from space

The Chaos has come:
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Old 05-02-2007, 06:52 PM   #2
The Dark Wolf
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That's ....ing ACE, dude! So simple, and so cool. Nice work. You should be an engineer. Simplicity and function, something they seem to usually overlook.



BTW, that's the rack o' doom. Damn near perfect.

http://www.wolf.org
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Old 05-02-2007, 06:57 PM   #3
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Blindingly cheap to do as well... There's a whole load of other things you could do such as control fan speed according to temperature etc, but I think i'll just settle with an on/off switch which I haven't done yet.

But overall, it is very very cool! I initially wanted green fans, but akasa don't seem to make them anymore

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Old 05-02-2007, 07:05 PM   #4
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Also, akasa PC fans are brushless DC, so they shouldn't interfere with the audio.

Another thing to remember is to make them extraction, so that they suck air out, as blowing air in wouldn't be good for the valves.

Air cooling diagram

And as for the engineering thing, i did do a masters in electrical engineering, have just never really used any of it since i ended up as a programmer

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Old 05-02-2007, 07:12 PM   #5
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And here endeth the lesson in what Chicken-Pox can do for you
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Old 05-02-2007, 07:57 PM   #6
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Your rack is kind of terrifying.
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Old 05-03-2007, 04:28 AM   #7
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So I'm going to have to bring my own stove to fry eggs on at rehearsal now? Good work mate
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Old 05-03-2007, 04:30 AM   #8
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Quote:
Originally Posted by The Dark Wolf View Post
BTW, that's the rack o' doom. Damn near perfect.
It sounds awesome too. Being in a band with James is really bad for GAS. He's the reason I own a UV7PWH and because of him I really fancy a Triaxis and a JSX. Bastard!
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Old 05-03-2007, 06:15 AM   #9
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Being in a band with James is really when he has GAS.
Fixed
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Old 05-03-2007, 06:19 AM   #10
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Looks pretty damn cool to me, especially in the dark!
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Old 05-03-2007, 06:21 AM   #11
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Those fans look so ....in' cool all lit up like that.
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Old 05-03-2007, 07:53 AM   #12
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Quote:
Originally Posted by metalfiend666 View Post
So I'm going to have to bring my own stove to fry eggs on at rehearsal now? Good work mate
Depends, I've not run it and driven it hard for an extended period yet, although I think the rivera i used to have had a 80mm (single) fan in it, so I'd guess it's probably overkill.

Quote:
Originally Posted by the.godfather View Post
Looks pretty damn cool to me, especially in the dark!
Half the reason for doing it, I could have used normal fans, but where's the fun in that? Still wish I'd found the green ones though, but red'll do

Quote:
Originally Posted by Mawdyson View Post
Those fans look so ....in' cool all lit up like that.
Racks are all about the glowing fairy lights

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Old 05-03-2007, 07:55 AM   #13
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Quote:
Originally Posted by Jongpil Yun View Post
Your rack is kind of terrifying.
I think the weight of it is more terrifying than anything else!

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Old 05-03-2007, 10:39 AM   #14
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Nice! I have one like that for my rack, but yours is much cooler. I'm gonna-a-get me one.
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Old 05-03-2007, 11:49 AM   #15
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Nice! I have one like that for my rack, but yours is much cooler. I'm gonna-a-get me one.
Aye And well cheap too! But now the question is, what colour will you get

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Old 05-03-2007, 12:59 PM   #16
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Indeed! I'm a-gonna-get-me some of them a-green ones, a-hick...

Then I'll swap you my Borg Engine for your X-Wing.

What sort of price, all in all, (if you dont mind me asking?
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Old 05-03-2007, 01:30 PM   #17
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Quote:
Originally Posted by 7 Dying Trees View Post
Racks are all about the glowing fairy lights
Damn right it is!!
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Old 05-03-2007, 04:07 PM   #19
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looks good man

əBCAir
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Old 05-03-2007, 09:01 PM   #20
7 Dying Trees
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Quote:
Originally Posted by stitch216 View Post
Indeed! I'm a-gonna-get-me some of them a-green ones, a-hick...

Then I'll swap you my Borg Engine for your X-Wing.

What sort of price, all in all, (if you dont mind me asking?
\In total? 13 on fans, 21 or so on the rack panel, 10 on the adapter. If you have a 12V DC adapter or know anyone with one lying around, then you can save on that bit, same with unwanted PC fans... Just have to make sure the adapter can produce enough juice as I think the fans need 300mA each, so you need at least 1A (12VA)

I do actually wish I'd found green fans, but i haven't seen any for ages in that size :/

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Old 05-03-2007, 09:02 PM   #21
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Quote:
Originally Posted by noodles View Post
Great idea and nice install.
Cheers man It still needs some tidying up, but it's cheap, quick and easy. Plus I get to look like the king of the lan party

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Old 03-16-2009, 04:07 PM   #22
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THIS SHOULD BE STICKIED!!!

Calms down.

Thanks again James.
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Old 03-16-2009, 04:17 PM   #23
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Thumbs up

Yep, that's exactly what I did in my old rack. Though I opted for 2 fans, and they came with normal plugs so I was able to plug them into the power conditioner directly. Partsexpress FTW.
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Old 03-16-2009, 05:06 PM   #24
Justin Bailey
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I like to pour cold water all over them personally...

















































































btw awesome rig, really great idea!
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Old 03-16-2009, 05:38 PM   #25
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Partsexpress FTW.
Yeah, that website is awesome, but since I've ordered things from PartSexPress.com before, I constantly get these big ass catalogs in the mail... its kinda annoying.
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