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Thread: Alphacool Laing DDC Acrylic Top Mod...

  1. 07-17-2006, 07:11 PM #1
    sdkevin
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    Alphacool Laing DDC Acrylic Top Mod...

    I'm just finished modding it to the same size of G1/4" barb, and before I'm going to enlarge some more I really want to know any performance gain if I did it to the size of G3/8? here are some pictures of what I did







    any suggestions or opinioins are welcome!
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  2. 07-17-2006, 07:20 PM #2
    Shpoon
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    Very clean looking, how'd you do it?

    I belive it was said that the G1/4" was the best for hte inlet only...
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  3. 07-17-2006, 07:42 PM #3
    septim
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    less flow restriction if with g38 hi-flo barbs...

    i do wish for the inlet to be modified to g38 hi-flo also...
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  4. 07-18-2006, 03:29 AM #4
    nealh
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    very clean work..what did you use to do it?
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  5. 07-18-2006, 03:36 AM #5
    Shpoon
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    Quote Originally Posted by septim
    less flow restriction if with g38 hi-flo barbs...

    i do wish for the inlet to be modified to g38 hi-flo also...
    You arleady modded the top inlet, and search the threads. Anderson made one about flow rates, I'm pretty sure they found if you opened them all up, you lost too much pressure head.
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  6. 07-18-2006, 08:06 AM #6
    sdkevin
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    pictures with barbs installed and next to it is dremel with sanding band, what I did was drill larger the hole and sand it to the size of G1/4. DO NOT use the size of G1/4 drill bit to drill or else you will damage the threaded part very easy so use the smaller size of drill bit so the drill bit does not touch the threaded part and drill out larger hole then using sanding band to sand it to the same size of G1/4 or larger if you want, this is my way of doing it without worried about damage the threaded part so maybe you guys can come up with better way so please share with us

    NOTE: Always drill slowly when working with acrylic, as for sanding part you can sand it @ 1000 ~ 2500 RPM (cordless dremel)



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  7. 07-18-2006, 09:36 AM #7
    Radical_53
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    I don't think that any bigger inlet would do any good. The inlet on the rotor itself is roughly 1/2" in diameter, so with the ~10mm you can get from one of Eddy's barbs, all the water going in should perfectly hit the inlet on the rotor. If it was bigger, I guess that there would be more turbulence which would result rather in more restriction than in higher flow...
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  8. 07-18-2006, 11:13 AM #8
    Shpoon
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    Quote Originally Posted by Radical_53
    I don't think that any bigger inlet would do any good. The inlet on the rotor itself is roughly 1/2" in diameter, so with the ~10mm you can get from one of Eddy's barbs, all the water going in should perfectly hit the inlet on the rotor. If it was bigger, I guess that there would be more turbulence which would result rather in more restriction than in higher flow...
    The top (inlet) does make a difference, as seen here:

    http://www.xtremesystems.org/forums/...d.php?t=104519

    As seen, 11% higher flow, 11% lower max head. For that reason, the best is to keep the inlet bigger, I belive the outlet the same.
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  9. 07-18-2006, 11:19 AM #9
    nikhsub1
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    Quote Originally Posted by Shpoon
    The top (inlet) does make a difference, as seen here:

    http://www.xtremesystems.org/forums/...d.php?t=104519

    As seen, 11% higher flow, 11% lower max head. For that reason, the best is to keep the inlet bigger, I belive the outlet the same.
    He means BIGGER than the mod seen above, ie going to 3/8" BSPP hole size from 1/4" BSPP which is shown.

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  10. 07-18-2006, 01:56 PM #10
    Radical_53
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    Right. Going from tiny standard diameter to the ID of the barb does make sense. Maybe even close to below the inner diameter of the rotor (not too sure about that, still it's only like 1-1.5mm we're talking about). But even bigger than that doesn't make any sense to me, or at least I don't see the technical theory behind it.
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  11. 07-18-2006, 01:57 PM #11
    Shpoon
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    I'm sorry, I'm dislexic (see: retarded)

    Carry on
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  12. 07-18-2006, 03:29 PM #12
    sdkevin
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    anyone has the results of Radiical vs. Alphacool Modded Top comparison? I can mod the outlet bigger but it will take some time to do it, I want to know the performance loss or gain if outlet is bigger before I'm modding it, slight performance gain doesn't worth my time of modding so please link the results or personal testing results would be fine, thanks!
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  13. 07-18-2006, 06:48 PM #13
    septim
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    http://www.systemcooling.com/mcp350_mod-01.html
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  14. 07-20-2006, 06:00 PM #14
    sdkevin
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    link above is 10w version with modded top, just got another Laing DDC from Danger Den today and installed my plexi top with enlarger inlet too, here are some pictures!





    I'm measured the hole in the middle of impeller and mod it to same size of it (11.5mm size) Eddy's barbs ID are about 10mm so my mod is slight larger 1mm at the bottom
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  15. 07-20-2006, 06:08 PM #15
    Pete
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    Very nice and very clean dude!
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  16. 07-20-2006, 10:05 PM #16
    septim
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    does anybody use the DDC++ with 1/2 Top inlet and 3/8 OutPut...
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