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Completed lowfat's Big Lian Li.

chrisk

Folding Captain
Joined
Jul 12, 2008
Messages
7,542
Location
GTA, Ontario
I saw a Lowfat build thread and I automatically assumed I would see some awesome sleeving that would drive normal folks insane trying to do.

Great work again as always!
 

lowfat

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Feb 12, 2007
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Grande Prairie, AB
Nibbled the rest of the edges off the motherboard tray so fit cables back there more easily.




Tapped some holes for the pump wire cable management.


Then cut and crimped them down to length.




Made an extension for one of the pump pwm/rpm cables. I wasn't able to find actual 4-pin female connectors but this works well enough.


Crimped and sleeved one of the 8-pin EPS cables.




Weekend is over so won't likely get much done for a few days.
:sad:
 

lowfat

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Was sleeving the pumps when I realized the wires were to small to do properly. Soldered on some 20 awg wire instead of the 22. First pump went well enough.


Second pump unfortunately did not go well at all. Upon pulling it out I noticed the soldermask was missing in parts and the trace was lifting up and broken. Not sure how it was still working (maybe it wasn't?).



Cleaned up up and tried to repair the PCB but it would just short out. :(


Now I don't really need two pumps, so I could drop down to a single pump w/ no affect on performance. I'd just lose the redundancy. I also have replacement PCBs I could install, but I'd lose PWM which is important to me as I like my quiet I can make the pumps run.

And I'll throw in a few pics of my crimper and stripper.

 

Shadowmeph

Well-known member
Joined
Oct 3, 2007
Messages
4,118
when ever I see Mods and read through it makes me feel a little bit embarrassed at the quality of my own work lol.
 

Dzzope

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Oct 15, 2010
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Irishman in Kiev, wOOoo, I'm an alien...
Whenever i see mods like this it makes me want to jump in and do them too... But then i look at the work-log and remember I'm too lazy for all that.. :p



Suppose if I was rich and had it as a spare machine and had the free time from work to spend on it then I would.. But a hobby like this and work... nah..
 

lowfat

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Feb 12, 2007
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Grande Prairie, AB
PCB from a Koolance PMP-400. Was surprised it was the same PCB as the MCP35X.


Pulled the pump apart to make it easier to solder the PCB.


Success!




Pump actually worked afterwards....... Until this morning when I killed it again. The 12V solder pad on the PCB pulled off. So unfortunately I am back down to one working pump.

A pic of my DDC graveyard / parts. I can get most of them working again if I put the time in to fix them. But I'll have to use the DIYINHK PCBs which are loud as eff since they run 60% faster plus they don't have PWM.
 

zoob

Well-known member
Joined
Aug 21, 2007
Messages
1,663
Location
Toronto, ON
Do you use a special controller for PWM, or just the motherboard fan headers? How low can the 35X run?
I was a DDC3.2 @ 5V diehard but they got harder and harder to start, and when not properly suspended/isolated they transmitted a weird tone throughout the entire case.
 

lowfat

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Feb 12, 2007
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Grande Prairie, AB
With PWM an MCP35X can go down to about 1800rpm before it started to make a weird vibrating noise. I use Speedfan off a motherboard header and run it @ 20% according to it.
 

drkCrix

Well-known member
Joined
Nov 13, 2011
Messages
56
Location
Sioux Lookout, ON
Did the PWM function actually work as well? I have 2 3.25 DDC pumps and they both list the PCB as 3.1 PWM and have the 4 solder pads
 
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