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DIY Y Splitter?

post #1 of 6
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How would i make a Y splitter, for controlling 2 fans at the front of my case with the onboard fan controller?
    
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post #2 of 6
Well, 1st you need to be concerned that you won't be overloading the controller w/ 2 fans. If they're high performance fans they "might" overdraw the one rheostat.

But, to make a splitter,
-get 2x 4-pin molex to 3-pin fan adapters
-cut, or pull out the leades coming from the molex part as close as possible to the molex connector.
-get a male leade from a dead fan or a 3-pin extension(can also use the one female end from the extension and only need to salvage 1 from an adapter).
-Strip off about 1/4" of insulation off of all the wires.
-splice together all the positive leads, tape them up tightly with electrical tape
-Splice together the negative leads, and tape it all together tightly with electrical tape.
-Connect the male end to the female from the fan controller, and your 2 fans to the 2 female leades.

I assumed the fans and controller are all 3-pin connectors.
Edited by DesertRat - 4/24/11 at 6:55pm
post #3 of 6
Why make a splitter? Easier, nicer looking, and saves space just to cut off the fan pins (after removing them from the connector ofc). Twist the individual wires together from each fan, crimp on new fan pins, and slide them back into the connector.

You can get the fan pins here

Btw, most of the fan headers on mb's are typically capable of of a 2A load per header. I've been running 2 Delta 120x38mm 148cfm's off my mobo's cpu fan header w/ no problems for nearly a year now.
Edited by Lucky 13 SpeedShop - 4/24/11 at 7:14pm
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post #4 of 6
Cheaper, easier, and wears seemingly forever: this, for $2.99 with free shipping. Mine survived 400+ fan changes and never broke. And it looks very nice. And it handles PWM fans.

Sure I can make a Y-cable myself. I certainly repaired enough that broke. But then I gave up and bought a bunch more of the Y-cable above. For me, totally worth it.
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post #5 of 6
Quote:
Originally Posted by Lucky 13 SpeedShop View Post
Btw, most of the fan headers on mb's are typically capable of of a 2A load per header. . . .
Some, not all. Gigabyte says only 1A on theirs. Safest: find the Amp rating in your users manual. If it's not there, write to customer service or tech support. That's what I did to find out about my Gigabyte board.
Edited by ehume - 4/24/11 at 8:24pm
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post #6 of 6
Quote:
Originally Posted by ehume View Post
Some, not all. Gigabyte says only 1A on theirs. Safest: find the Amp rating in you users manual. If it's not there, write to customer service or tech support. That's what I did to find out about my Gigabyte board.
True, I emailed support to find those values for both Asus & MSi. Both rate theirs @ 2A. These fans are probably going to get retired soon when I get underwater.
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Yate Loon D12SH-12 Silverstone SST-AP181 Koolance DDC pump housing/heasink Sunon 60 mm cooling fan for pump housing 
CoolingCoolingCoolingCooling
Bitspower 7/16" Black Sparkle compression fitt... Bitspower Black Sparkle 90 degree double rotary... Bitspower 45 degree rotary fittings Primochill LRT UV blue tubing 
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XSPC Rasa cpu block XSPC RX-240 radiator XSPC DDC res. top Laing DDC-1  
OSMonitorKeyboardPower
7 Professional Samsung EX-2220 Das Professional Seasonic's dead :( 
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Lian Li T60-B PureTrak Valor Ratpadz GS Auzentech X-plosion 7.1 
AudioAudioAudioOther
AKG K701's Lil Dot MK.III hp amp Burr-Brown OPA627SM opamp upgrade Custom built MTM style transmission line 
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