Laing DDC (Swiftech MCP350/355) Names & Info

[barzi]

Yes I'd choose a DDC with top mounted inlet if I were you.
The purpose of modifying a DDC top is to move the inlet from the front to the top to increase flow. You don't need to modify the top since your pump has an aftermarket top which already has a top mounted inlet.

So my pump is the same as the modified mcp350 in your post(#48)?

And my pump has a inlet in the top. But i have 2 "holes" on the side. Are these outputs?(both) or one input and one output? And how do i use them?( i want to use the top inlet if it is has more flow then, but what do i do with the other 2 holes)

So if i can get a mcp655 and a Laing DCC with that top for the same price, you would go for the Laing?

[andersson.j]

So my pump is the same as the modified mcp350 in your post(#48)?
It's the same pump but with different tops. They should perform pretty much the same though.

And my pump has a inlet in the top. But i have 2 "holes" on the side. Are these outputs?(both) or one input and one output? And how do i use them?( i want to use the top inlet if it is has more flow then, but what do i do with the other 2 holes)
The left hole on the side is the outlet and the right is another inlet. Just plug the side inlet and use the one on top instead for increased flow.

So if i can get a mcp655 and a Laing DCC with that top for the same price, you would go for the Laing?
Yes.

[barzi]

Thank you very much .
I know it's the same pump, but i mean in performance, they are the same too?(because you said i have a inlet in the top, and the modified version is only that you mod a inlet in the top).

If these 2 are the same, i will get the laing
Thanks again!

[FourDoors]

hi guys, have you ever heard about problems with the 10w DDC? the start failure is a problem of DDC ultra only or of the DDC too?
Is it not possible that these problems derives from the mounting of modified tops?
thanks

[Chas_The_Man]

Is there a supply shortage of these? A lot of shops seem to be out of them at the moment.

http://www.petrastechshop.com/pumps.html

Yet Sidewinder seems to have them but they are blowing the DDC1's out at 65 bucks.

http://www.sidewindercomputers.com/swmcpu.html

I need a couple of pumps and I know whats going to happen. I'll order two with Petra's tops and by the time I get them installed there will be a new quieter and more dependable version for 1/2 the price staring me in the face lol.

[Signal64]

I have a Corsair Nautilus 500 which uses a Laing DDC-1TP.

A couple of questions:

1. Is the noise level pretty much the same (running at the same volts) with all of the DDC pumps?

I'd like to replace it with a quieter version if possible.

2. It's mounted upside down in the external case. Is the noise level or wear and tear affected more when it's mounted that way?

Here's some pics of the external unit from a review:
http://www.madshrimps.be/?action=get...19&articID=457

The author speculates on question #2 but didn't confirm what Laing might have said.

Unfortunatly it doesn't look like I could add any of the tank mods as it's pretty tightly installed there.

[Chas_The_Man]

The 10 w is quieter than the 18 and changing the top on either will alter the resonant charachteristics of the pump slightly so the noise difference between modded and unmodded tops will be somewhat subjective and dependant on a particular mounting methodology. There is also the variance between units that makes the discussion of noise all the more difficult. My pump may be noisier than yours even if it is the same pump. I dont think you can make it quieter given the restrictions of the case you have with the Nautilus beyond playing with the original mounting and foam tape material.

[Yozzman]

Here is a nice and simple mod to get to mod the 10w to a 18w version
Verry simple

http://forum.effizienzgurus.de/f23/h...id=29#overview

[Hard H20]

All,

I'm starting to get a bit concerned with the DDC+ failures that I'm seeing at different forums, as I understand it the % of failures is very low but it still concerns me when I think about it. I work away from the house quite a bit and I would hate to come home to a fried system due to pump failure.

I'm getting ready to build a dual loop with 2 MCP355's w/ Petra's Tops. Would the increased heatdump be of any concern if I ran 2 additional pumps on each loop in series for safety? I think it very unlikely that both DDC's would crap out at one time.

What is you're opinion XS, 2 pumps on each loop in series or stay with 1 pump per loop?

[Pete]

The failure is due to the modded tops and the ID for the impler being too small so it seams

[IanY]

All,

I'm starting to get a bit concerned with the DDC+ failures that I'm seeing at different forums, as I understand it the % of failures is very low but it still concerns me when I think about it. I work away from the house quite a bit and I would hate to come home to a fried system due to pump failure.

I'm getting ready to build a dual loop with 2 MCP355's w/ Petra's Tops. Would the increased heatdump be of any concern if I ran 2 additional pumps on each loop in series for safety? I think it very unlikely that both DDC's would crap out at one time.

What is you're opinion XS, 2 pumps on each loop in series or stay with 1 pump per loop?

I have redundant pumps in all my loops. All my loops have at least two pumps. That's the best way to ensure you don't have expensive dead hardware. I encourage you to do so. If you run out of space, there's an Alphacool dual pump adapter that I use.

[Hard H20]

Ian

I was thinking the same thing, redundant pumps for safety sake. Running the setup like that hurting your temps any?

[IanY]

Ian

I was thinking the same thing, redundant pumps for safety sake. Running the setup like that hurting your temps any?

Quite to the contrary... the heat dump isn't as bad as you think as long as you have massive radiator power. The extra head pressure serves as a benefit.. Few people are as crazy to dedicate triple radiators to small blocks, but where a radiator can easily cool a 200 thermal watt cpu, then an extra little 18 watt pump is inconsequential.

[Petra]

The failure is due to the modded tops and the ID for the impler being too small so it seams

Unlikely... most of the DDC's that I've had come back were malfunctioning due to improperly manufactured/attached impellers that were making contact with the impeller housing ceiling (of the stock top) at certain angles of impeller deflection (basically, the impeller's surface was uneven due to high spots). I've had maybe three come back that 'burnt up' and those failures occurred within the first week of operation (or less).

Granted, this is still something that Laing is looking into, as they also offer a 1/2" straight inlet part for the DDC pumps.

[Hard H20]

Ian

Thanks for the info. I'm going to order 2 more pumps and run them in series. The PA120.3's should be more than up to the job.

[Pete]

Confused..good so am i and Laining.de!!!

If anyone has PCB info on older 10w and 18w let me know via PM asap please

[Graystar]

Unlikely... most of the DDC's that I've had come back were malfunctioning due to improperly manufactured/attached impellers that were making contact with the impeller housing ceiling (of the stock top) at certain angles of impeller deflection (basically, the impeller's surface was uneven due to high spots).

That's very interesting. I haven't heard that before. Is there a way to tell if your pump has a bad impeller?

[Pete]

Guess we could lap them like we lap cpu and hsf....

[Petra]

Guess we could lap them like we lap cpu and hsf....

You'd probably put a hole in the impeller face and/or throw it out of balance by doing that. It's an attachment issue, or so it seems--I'll post a photo of what I'm talking about when I get a chance.

[Pete]

I have looked at mine and they look very unfinshed as if they have been randomly made.

They click on and off, i found that much out

[Yozzman]

Does anyone have a good howto mod from 10w to 18w?
Mine has a different pcb than the howto i found...

[Pete]

Differt PCB between both on the ones you have if your states side...

[fgw]

I have a Corsair Nautilus 500 which uses a Laing DDC-1TP.

A couple of questions:

1. Is the noise level pretty much the same (running at the same volts) with all of the DDC pumps?

I'd like to replace it with a quieter version if possible.

2. It's mounted upside down in the external case. Is the noise level or wear and tear affected more when it's mounted that way?

Here's some pics of the external unit from a review:
http://www.madshrimps.be/?action=get...19&articID=457

The author speculates on question #2 but didn't confirm what Laing might have said.

Unfortunatly it doesn't look like I could add any of the tank mods as it's pretty tightly installed there.

1. from looking at the pics, you can see the label on the pump which reads: DDC-1TP this is the 10W version of the pump. i use the same one, but with a different top. i have also modded my pump to switch it to the 18W version. from hearing at this two configurations i would say the 18W is noticeable loader, but its not that bad. as you already have the 10W version installed, the only way to reduce noise would be a different top. but as you said, you are already out of space ...

2. this is a excerpt from the operations manual, downloaded from laing
http://www.laing.de/file/113
the mounting position in the nautilus looks not recommended by laing, see the red rectangle:

[serialk11r]

I'd really like to see 2 DDC+ getting worse results than a single one. Really, how much heat will make it into the loop?

[perfection]

hey does anyone have a direct comparison between the Laing DDC2 and DDC1?? How loud are they??