Overclock.net › Forums › Cooling › Air Cooling › 2-wire to 3-wire conversion mod (56k warning)
New Posts  All Forums:Forum Nav:

2-wire to 3-wire conversion mod (56k warning)

post #1 of 9
Thread Starter 
With our 2150 rpm Gentle Typhoons ordered comes the question, can they be modded so that the 2-wire fans can become rpm-reporting 3-wire fans? I decided to invetigate.

This is a Mechatronics fan, allegedly 3800 rpm:



Check out the Molex power here:


Also note that I had to chew up the front cover with my trusty side cutters.

To expose a third solder nubbin:



Hard to get at, especially with a wedge-type soldering iron tip:



But I did it:



So it looks like this:


And now it tells me that it runs at 4115 rpm on 12v.

So that was a successful mod. Now for my NMB fan:



More exposed, I can see a third solder nub without having to chew a thing:



Now these are $15 fans with bare wires. The Mechatronics came with a box of fans that averaged less than $1 each. So I did some soldering on the NMB's:



Alas. The reported rpm was zero. I then did a touch test with my other fan. Same deal.

Hmm. What do NMB PWM fans look like?



A look at the innards:





So what did I learn?

My cheap Mechatronics fan's PCB has an active connection for rpm reporting. My more expensive NMB fan has a nub, but no circuit. And peering inside a pair of 2-wire Deltas, I could see no third nub at all. So this bodes ill for our being able to convert our Nidec 2150-rpm GT's to 3-wire. But time will tell.
Edited by ehume - 7/23/11 at 2:49pm
alpha updated
(19 items)
 
secundus
(14 items)
 
 
CPUMotherboardGraphicsRAM
i7 4790k Gigabyte GA-Z97X Gaming-7 Intel HD4600 Crucial Ballistix Sport Very Low Profile 8GB Ki... 
Hard DriveCoolingOSMonitor
Samsung 840 EVO 500GB Prolimatech Megahalems Rev. C Windows 8.1 Home Premium 64-bit Acer K242HL 
KeyboardPowerCaseMouse
Dell SK-8110 (PS/2) Seasonic X460 Fanless motherboard tray from CM ATCS 840 Logitech MX 1100 
Mouse PadAudio
Dell Creative SoundBlaster X-Fi MB3 
CPUMotherboardGraphicsRAM
i7 860 Gigabyte GA P55M UD2 ZOTAC/NVidia GTX 650 Ti 2GB 4x4GB G.Skill Ripjaws DDR3-1333 CAS9 
Hard DriveOptical DriveCoolingOS
Samsung 1TB Spinpoint F3 7200.12 Plextor 24x DVD burner Cooler Master Hyper Z600R Win7 64-bit 
MonitorKeyboardPowerCase
Dell E207WFP 20-inch flat panel Logitech Wireless 510 Seasonic X-650 fully modular 80+ Gold Lian Li PC-7FN 
MouseMouse PadAudio
Wireless Mouse WACOM Intuos 3 generic 
  hide details  
Reply
alpha updated
(19 items)
 
secundus
(14 items)
 
 
CPUMotherboardGraphicsRAM
i7 4790k Gigabyte GA-Z97X Gaming-7 Intel HD4600 Crucial Ballistix Sport Very Low Profile 8GB Ki... 
Hard DriveCoolingOSMonitor
Samsung 840 EVO 500GB Prolimatech Megahalems Rev. C Windows 8.1 Home Premium 64-bit Acer K242HL 
KeyboardPowerCaseMouse
Dell SK-8110 (PS/2) Seasonic X460 Fanless motherboard tray from CM ATCS 840 Logitech MX 1100 
Mouse PadAudio
Dell Creative SoundBlaster X-Fi MB3 
CPUMotherboardGraphicsRAM
i7 860 Gigabyte GA P55M UD2 ZOTAC/NVidia GTX 650 Ti 2GB 4x4GB G.Skill Ripjaws DDR3-1333 CAS9 
Hard DriveOptical DriveCoolingOS
Samsung 1TB Spinpoint F3 7200.12 Plextor 24x DVD burner Cooler Master Hyper Z600R Win7 64-bit 
MonitorKeyboardPowerCase
Dell E207WFP 20-inch flat panel Logitech Wireless 510 Seasonic X-650 fully modular 80+ Gold Lian Li PC-7FN 
MouseMouse PadAudio
Wireless Mouse WACOM Intuos 3 generic 
  hide details  
Reply
post #2 of 9
Quote:
Originally Posted by ehume View Post
So that was a successful mod. Now for my NMD fan:
Typo. It should be NMB.

So it seems like the only way to know is to try it. I can't wait to see some more fans tested. Subbed and +rep!
post #3 of 9
Adding the third wire to the 2150s doesn't work, I tried it on 2 of em just for the hell of it and neither registered any rpm.

Because these were direct built manufactured fans the physical circuitry just isnt there unless it was specified during fabrication. Some of the 2150s that were built for retail in japan that were only 2 wire fans did have the rpm sensor pre installed and was just missing the wire. But unfortunately none of these include the sensor.
My New PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
1090T 4.4ghz @ 1.512V and NB 3.5ghz @ 1.412V Crosshair IV Formula 3x 6950's Unlocked Bios 16GB G.Skill Ripjaws 
Hard DriveOptical DriveOSMonitor
2 C300 128GB SSD's, 2 1TB WD Blacks, 2TB WDUSB3 2 Lite-on Sata Dvd Multis WIN 7 ULTIMATE X64 3x Samsung 226B Monitors and Samsung 46" LED HDTV 
KeyboardPowerCaseMouse
G15 Original Corsair AX1200 CoolerMaster Haf X G7 
  hide details  
Reply
My New PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
1090T 4.4ghz @ 1.512V and NB 3.5ghz @ 1.412V Crosshair IV Formula 3x 6950's Unlocked Bios 16GB G.Skill Ripjaws 
Hard DriveOptical DriveOSMonitor
2 C300 128GB SSD's, 2 1TB WD Blacks, 2TB WDUSB3 2 Lite-on Sata Dvd Multis WIN 7 ULTIMATE X64 3x Samsung 226B Monitors and Samsung 46" LED HDTV 
KeyboardPowerCaseMouse
G15 Original Corsair AX1200 CoolerMaster Haf X G7 
  hide details  
Reply
post #4 of 9
i have a few 2wire fans with the 3rd pin on the pcb, but no signal comes from it when powered
post #5 of 9
This is why I bought 3 completes, and 3 barebones. That way I can use a 2 way splitter, and put one of each on it.

Thanks for the info Ehume, but I bet Therionx is right. As he already has the fans, and was the one who started the whole group buy. Thank you to both of you guys.
Edited by goodtobeking - 7/23/11 at 3:23pm
Bubble Bee Tuna
(20 items)
 
  
CPUMotherboardGraphicsGraphics
4770k@4.5 Asrock Z87 OC Formula 7970@1200/1600 6970@950/1450 
GraphicsRAMHard DriveHard Drive
6970@950/1450 Samsung Wonder Ram 120Gb Phoenix SSD 120Gb Phoenix SSD 
Hard DriveHard DriveOptical DriveCooling
1Tb Western Digital HDD 1Tb Western Digital HDD Slim Slot stealthed Heatkiller 3.0 CU, Heatkiller 7970 CU with back... 
CoolingCoolingOSMonitor
Phobya 400mm radiator, EX 360mm radiator, misc ... Swiftech MCP35X2 Pump, Frozen_Q 250mm Liquid Fu... Windows 7 Ultimate Asus 1080P 
KeyboardPowerCaseMouse
OCN Edition Ducky with MX Blues Corsair HX 850 Corsair 600T Razor Lachesis 
  hide details  
Reply
Bubble Bee Tuna
(20 items)
 
  
CPUMotherboardGraphicsGraphics
4770k@4.5 Asrock Z87 OC Formula 7970@1200/1600 6970@950/1450 
GraphicsRAMHard DriveHard Drive
6970@950/1450 Samsung Wonder Ram 120Gb Phoenix SSD 120Gb Phoenix SSD 
Hard DriveHard DriveOptical DriveCooling
1Tb Western Digital HDD 1Tb Western Digital HDD Slim Slot stealthed Heatkiller 3.0 CU, Heatkiller 7970 CU with back... 
CoolingCoolingOSMonitor
Phobya 400mm radiator, EX 360mm radiator, misc ... Swiftech MCP35X2 Pump, Frozen_Q 250mm Liquid Fu... Windows 7 Ultimate Asus 1080P 
KeyboardPowerCaseMouse
OCN Edition Ducky with MX Blues Corsair HX 850 Corsair 600T Razor Lachesis 
  hide details  
Reply
post #6 of 9
Quote:
Originally Posted by goodtobeking View Post
This is why I bought 3 completes, and 3 barebones. That way I can use a 2 way splitter, and put one of each on it.
aaaaawh, thats smart... Should have thought of that!
post #7 of 9
Thread Starter 
Quote:
Originally Posted by nawon72 View Post
Typo. It should be NMB.

So it seems like the only way to know is to try it. I can't wait to see some more fans tested. Subbed and +rep!
Thanks for picking up the typo.
alpha updated
(19 items)
 
secundus
(14 items)
 
 
CPUMotherboardGraphicsRAM
i7 4790k Gigabyte GA-Z97X Gaming-7 Intel HD4600 Crucial Ballistix Sport Very Low Profile 8GB Ki... 
Hard DriveCoolingOSMonitor
Samsung 840 EVO 500GB Prolimatech Megahalems Rev. C Windows 8.1 Home Premium 64-bit Acer K242HL 
KeyboardPowerCaseMouse
Dell SK-8110 (PS/2) Seasonic X460 Fanless motherboard tray from CM ATCS 840 Logitech MX 1100 
Mouse PadAudio
Dell Creative SoundBlaster X-Fi MB3 
CPUMotherboardGraphicsRAM
i7 860 Gigabyte GA P55M UD2 ZOTAC/NVidia GTX 650 Ti 2GB 4x4GB G.Skill Ripjaws DDR3-1333 CAS9 
Hard DriveOptical DriveCoolingOS
Samsung 1TB Spinpoint F3 7200.12 Plextor 24x DVD burner Cooler Master Hyper Z600R Win7 64-bit 
MonitorKeyboardPowerCase
Dell E207WFP 20-inch flat panel Logitech Wireless 510 Seasonic X-650 fully modular 80+ Gold Lian Li PC-7FN 
MouseMouse PadAudio
Wireless Mouse WACOM Intuos 3 generic 
  hide details  
Reply
alpha updated
(19 items)
 
secundus
(14 items)
 
 
CPUMotherboardGraphicsRAM
i7 4790k Gigabyte GA-Z97X Gaming-7 Intel HD4600 Crucial Ballistix Sport Very Low Profile 8GB Ki... 
Hard DriveCoolingOSMonitor
Samsung 840 EVO 500GB Prolimatech Megahalems Rev. C Windows 8.1 Home Premium 64-bit Acer K242HL 
KeyboardPowerCaseMouse
Dell SK-8110 (PS/2) Seasonic X460 Fanless motherboard tray from CM ATCS 840 Logitech MX 1100 
Mouse PadAudio
Dell Creative SoundBlaster X-Fi MB3 
CPUMotherboardGraphicsRAM
i7 860 Gigabyte GA P55M UD2 ZOTAC/NVidia GTX 650 Ti 2GB 4x4GB G.Skill Ripjaws DDR3-1333 CAS9 
Hard DriveOptical DriveCoolingOS
Samsung 1TB Spinpoint F3 7200.12 Plextor 24x DVD burner Cooler Master Hyper Z600R Win7 64-bit 
MonitorKeyboardPowerCase
Dell E207WFP 20-inch flat panel Logitech Wireless 510 Seasonic X-650 fully modular 80+ Gold Lian Li PC-7FN 
MouseMouse PadAudio
Wireless Mouse WACOM Intuos 3 generic 
  hide details  
Reply
post #8 of 9
Quote:
Originally Posted by goodtobeking View Post
This is why I bought 3 completes, and 3 barebones. That way I can use a 2 way splitter, and put one of each on it.

Thanks for the info Ehume, but I bet Therionx is right. As he already has the fans, and was the one who started the whole group buy. Thank you to both of you guys.
You are brilliant LOL
    
CPUMotherboardGraphicsRAM
Intel 2600k (Stock) Asus Maximus Gene V  Powercolor AX6850 Passive Cooler Gskill Ripjaws DDR3 1600MHz 
Hard DriveOptical DriveCoolingOS
OCZ Vertex II 90GB External Noctua NH-D14 Windows 7 Pro 64bit 
MonitorKeyboardPowerCase
Gone Microsoft Ergonomic 4000 Keyboard Corsair AX850 Silverstone FT03B 
MouseMouse Pad
Logitech G500 Black Normal 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel 2600k (Stock) Asus Maximus Gene V  Powercolor AX6850 Passive Cooler Gskill Ripjaws DDR3 1600MHz 
Hard DriveOptical DriveCoolingOS
OCZ Vertex II 90GB External Noctua NH-D14 Windows 7 Pro 64bit 
MonitorKeyboardPowerCase
Gone Microsoft Ergonomic 4000 Keyboard Corsair AX850 Silverstone FT03B 
MouseMouse Pad
Logitech G500 Black Normal 
  hide details  
Reply
post #9 of 9
Thread Starter 
What I'd really like to know is whether I could do a 2->3wire thing with a San Ace fan. I can get a 9G1212F102 (like the 9G1212H1011, but not as fast) with two wires, the three wire version is not stocked. They cost nearly $19 each, so I'd want to know I could convert one if I ordered it.
alpha updated
(19 items)
 
secundus
(14 items)
 
 
CPUMotherboardGraphicsRAM
i7 4790k Gigabyte GA-Z97X Gaming-7 Intel HD4600 Crucial Ballistix Sport Very Low Profile 8GB Ki... 
Hard DriveCoolingOSMonitor
Samsung 840 EVO 500GB Prolimatech Megahalems Rev. C Windows 8.1 Home Premium 64-bit Acer K242HL 
KeyboardPowerCaseMouse
Dell SK-8110 (PS/2) Seasonic X460 Fanless motherboard tray from CM ATCS 840 Logitech MX 1100 
Mouse PadAudio
Dell Creative SoundBlaster X-Fi MB3 
CPUMotherboardGraphicsRAM
i7 860 Gigabyte GA P55M UD2 ZOTAC/NVidia GTX 650 Ti 2GB 4x4GB G.Skill Ripjaws DDR3-1333 CAS9 
Hard DriveOptical DriveCoolingOS
Samsung 1TB Spinpoint F3 7200.12 Plextor 24x DVD burner Cooler Master Hyper Z600R Win7 64-bit 
MonitorKeyboardPowerCase
Dell E207WFP 20-inch flat panel Logitech Wireless 510 Seasonic X-650 fully modular 80+ Gold Lian Li PC-7FN 
MouseMouse PadAudio
Wireless Mouse WACOM Intuos 3 generic 
  hide details  
Reply
alpha updated
(19 items)
 
secundus
(14 items)
 
 
CPUMotherboardGraphicsRAM
i7 4790k Gigabyte GA-Z97X Gaming-7 Intel HD4600 Crucial Ballistix Sport Very Low Profile 8GB Ki... 
Hard DriveCoolingOSMonitor
Samsung 840 EVO 500GB Prolimatech Megahalems Rev. C Windows 8.1 Home Premium 64-bit Acer K242HL 
KeyboardPowerCaseMouse
Dell SK-8110 (PS/2) Seasonic X460 Fanless motherboard tray from CM ATCS 840 Logitech MX 1100 
Mouse PadAudio
Dell Creative SoundBlaster X-Fi MB3 
CPUMotherboardGraphicsRAM
i7 860 Gigabyte GA P55M UD2 ZOTAC/NVidia GTX 650 Ti 2GB 4x4GB G.Skill Ripjaws DDR3-1333 CAS9 
Hard DriveOptical DriveCoolingOS
Samsung 1TB Spinpoint F3 7200.12 Plextor 24x DVD burner Cooler Master Hyper Z600R Win7 64-bit 
MonitorKeyboardPowerCase
Dell E207WFP 20-inch flat panel Logitech Wireless 510 Seasonic X-650 fully modular 80+ Gold Lian Li PC-7FN 
MouseMouse PadAudio
Wireless Mouse WACOM Intuos 3 generic 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Air Cooling
Overclock.net › Forums › Cooling › Air Cooling › 2-wire to 3-wire conversion mod (56k warning)