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Unread 09-05-2004, 08:30 PM   #1
ZaVkE
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Join Date: Jun 2002
Location: Belgium
Posts: 83
Default SFF WC-project: remarks & opinions

The subject:
a shuttle SN45G
2500+ Barton @ 2750MHz & beyond
ATI 9500 @ 9700pro & beyond

The torture:
Fitting all of this inside the case so on the outside (execpt from some missing grills it looks basic):
  • #rotor design cpu-block 3/8-intake-fitting
  • vga custommade block 3/8 fittings
  • chipset custommade block 3/8 fittings
  • Black Ice Micro 1/2 fittings
  • 2 Hydor S20II pumps (480l/h or 2gpm & rotatable outlets)
  • TT UFO fan (+80cfm)

The plan:
Making 2 seperate circuits which share the same rad.

How & Why?
The rad will have 2 1/2 fittings to make it a less flow restrictive as possible. Otherwise the small fittings could put a huge strain on the flow.
Using 2 Y-connectors both circuits (on 3/8-tubing) will enter & exit the rad, making them completely seperated from eachother (execpt for the rad offcourse).

Circuit1:
From the rad the a pump seated (looking @ the front of the shuttle) left of the drive-carriage (perfect fit btw, 1 mm space left ) to the cpu-block (going to use shorter fittings to make more space for larger tube-corner). 2 outlets come together in a Y-piece which goes to the Y-piece connected to the rad. Nothing unusual here so far

Circuit2:
From the rad to the pump on the right side over to the chipset-block, to the vga-block and back to the rad. But because most chipset- & vgablocks are either with fittings on top or with fittings that make a 90°corner, i would be forced to make extremely sharp bends and lose a lot of flow.
To counter this i'm planning on making my own blocks for vga & chipset (both on the same principle) with in & outlets on the side (maybe a bit elevated so that the tubing doesn't hit something). That way i will have almost no bends between pump & chipset and chipset & vga, together with a much less restrictive design of the blocks should result in a better flow in circuit 2.
You can best compare the idea to the zalman vga-block.


The idea for my blocks is to have a lot of small fins placed along with the flow over the length of the block with a entry & exit @ the beginning & end. Kinda like a cascade design without the center inlet.

I'm planning to start with either of these 2 blocks:



Still in doubt, but tending towards the copper one.
Then i'll orient them in the way i need them, drill the holes to mount them & remove all the metal that i don't need (excess fins & base). Afterwards i'm planning on putting a plexi top over it all. For the shap of the fins i'm opting for a V-shaped entrance so that there is a more even distribution along the fins.

I think that this design should work nicely for what is is supposed to do and that the overal performance of the system will be nice (altough it's looking into a crystal sphere for the moment).
My biggest doubts are the fan, but i can't seems to find a decent 80mm (or even 92mm) with a lot of cfm and a reasonable dba-level.

Any remarks, questions or opinions are welcome and appreciated
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