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EK-DDC and MCP35x - Page 2

post #11 of 46
I'll just leave this here:

2011-02-07181249.jpg
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post #12 of 46
Quote:
Originally Posted by Martinm210;12301387 
FYI, there is more to the difference in the 3.25 vs 35X than PWM control as well.
Quote:
Originally Posted by Chunky_Chimp;12301419 
Such as? thinking.gif
Quote:
Originally Posted by Skinnee 
Moving to the MCP35X and DDC3.25 comparison, we really start to see some differences. The MCP35X has a nice round curve in the higher flow ranges and starts to flatten out around 1.75GPM, where the DDC3.25 (also known as the Koolance PMP-400) has a much steeper curve. You will see exactly what this means to your loop flow rates in the next section, but what this means in Lehman’s terms is that the MCP35X has a PQ range that excels from high to low restriction and the DDC3.25 does better in high restriction loops. Subtle differences, but the differences are definitely there.

http://skinneelabs.com/swiftech-mcp35x/3/
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post #13 of 46
Quote:
Originally Posted by Chunky_Chimp;12301419 
Such as? thinking.gif

Yeah, it has a different speed control curve of sorts. The pumps have circuitry that reduces RPM as restriction reduces and flow rate increases. Each pump does it a little different

Nothing that's going to make any noteworthy temperature difference, but there is some difference.
Edited by Martinm210 - 2/7/11 at 9:54pm
    
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post #14 of 46
Quote:
Originally Posted by Martinm210;12303558 
Yeah, it has a different speed control curve of sorts. The fans have circuitry that reduces RPM as restriction reduces and flow rate increases. Each pump does it a little different

That actually sounds like what goes on with Aquacomputer-branded Eheim 1046s (not sure if the normal 1046 does it); I quite like it.
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post #15 of 46
Thread Starter 
Thanks a lot all! Always very helpful biggrin.gif

Love you all!

Daetlus your post makes me wonder why EK support outright just said "No it does not fit."

After 2 days of me waiting for them to respond and they still don't even know about their own products. Fascinating.
post #16 of 46
Quote:
Originally Posted by Daetlus;12301816 
I'll just leave this here:

2011-02-07181249.jpg

Could you orient the two labels facing one another so that they don't show?
    
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post #17 of 46
Quote:
Originally Posted by Phos;12304867 
Could you orient the two labels facing one another so that they don't show?

I can't tell if that was a neatness joke, or if you were serious, though I'm assuming the first.

If so, biggrin.gif Yeah, they'll be oriented so that the labels are facing when I get to that part of the build. I just threw them on to snap the picture. Just waiting on delivery of my LittleDevil V8 to begin. Worklog for it should be fun.

If you weren't joking, then I'll have to answer your question tomorrow. The screw in locations for the pumps form the vertices of a square. I also believe that the screw locations are all an equal distance from the outside edge of the pump. This would mean that you could indeed rotate them to face any direction you would like.

If anyone wants to see more pictures on the fitting, I could snap some more.
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post #18 of 46
Quote:
Originally Posted by Daetlus;12301816 
I'll just leave this here:

2011-02-07181249.jpg

A picture is worth a 1000 words in this case. Will have to bookmark that post as no doubt the question will be asked a few times +Rep
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post #19 of 46
The DDC3.25 is a MCP355 with a different top and a small upgrade to the PCB.
The 35X is a completely new PCB, and the rotar head is a bit different over the other DDC pumps, and the base top is better.

Also all the 35* pumps are compatible to the same tops. They all have the same body and the same head room.

I'm using a couple of 35X with the EK dual top. Works perfectly.
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post #20 of 46
Thread Starter 
Quote:
Originally Posted by Starbuck5000;12306364 
A picture is worth a 1000 words in this case. Will have to bookmark that post as no doubt the question will be asked a few times +Rep

Yep, bookmarked smile.gif
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