PDA

View Full Version : MCP 350 with XSPC Restop same as mcp355????



scgt1
01-12-2010, 06:39 PM
Since the mcp350 is restricted because of its stock port size. If the top is changed to a XSPC Restop will it perform the same as a MCP355 since its said if the inlet port is cut off and a 1/2 barb is put in the top it will perform as a MCP355.

Just curious because I have access to MCP350's for $25 brand new. :up:

faster3200
01-12-2010, 06:49 PM
Better yet, mod the 350 to a 355 and not have to wonder.

scgt1
01-12-2010, 06:55 PM
Better yet, mod the 350 to a 355 and not have to wonder.Via:
THIS???? (http://coolercasesuk.co.uk/showthread.php?t=10)

Which is the same thing as replacing the top with one that has 1/2 input correct? In turn changing the top to the XSPC Restop would do the same thing correct?

I want to use those tops in my build, but if using that top wont act the same as the mod then I would rather get the 355 pumps.

Metric
01-12-2010, 07:15 PM
@scgt1: No, as in the solder mod to convert the 9w into an 18w :) http://forum.effizienzgurus.de/f23/howto-laing-pro-zur-ultra-umloeten-t1106.html?referrerid=29#overview

scgt1
01-12-2010, 07:28 PM
@scgt1: No, as in the solder mod to convert the 9w into an 18w :) http://forum.effizienzgurus.de/f23/howto-laing-pro-zur-ultra-umloeten-t1106.html?referrerid=29#overview

AWSOME!!! Thanks Sure will be ordering those then. :up:

Waterlogged
01-12-2010, 08:41 PM
Caution: There are newer versions of the DDC 3.1 available that we have not bben able to confirm if that mod is possible on them.

I need to really get in touch with P-PC's and see if they can sort through their stock and get me one of the newer ones so I can do some testing with it. :rolleyes:

scgt1
01-12-2010, 08:47 PM
Caution: There are newer versions of the DDC 3.1 available that we have not bben able to confirm if that mod is possible on them.

I need to really get in touch with P-PC's and see if they can sort through their stock and get me one of the newer ones so I can do some testing with it. :rolleyes:

The person I can get some from has quite a few of them. How do you identify which are which?

The mod states using the blue impellar versions. The ones he has are black. So.......

Waterlogged
01-12-2010, 09:02 PM
The person I can get some from has quite a few of them. How do you identify which are which?

The only way right now is to take them apart and visually inspect them, they should look exactly like they do in the mod article. The newer ones don't have the extra little bare wire on them.

Here is what a new (do not want) one looks like.
http://www.xtremesystems.org/forums/showpost.php?p=4108625&postcount=9

Burninator
01-12-2010, 09:39 PM
ya... just go with a ddc3.2 from the get go... i was going to try the mod and save $15, but as waterlogged said there are newer versions of the ddc3.1 that prevented me from doing so... luckily someone traded me for a ddc3.2 :D

viper2004
01-12-2010, 10:42 PM
I bought two of the pumps that Scgt1 is refering to. They're non-branded MCP350/DDC1 pumps with black impellers.

I've never owned any other DDC pumps so I can't compare their performance/noise but these work well.

Here's a picture of the inside:

http://img691.imageshack.us/img691/2101/dsc00458l.jpg

scgt1
01-12-2010, 10:48 PM
The only way right now is to take them apart and visually inspect them, they should look exactly like they do in the mod article. The newer ones don't have the extra little bare wire on them.

Here is what a new (do not want) one looks like.
http://www.xtremesystems.org/forums/showpost.php?p=4108625&postcount=9

Why do you say do not want?

I really don't want the so called mcp355 I have that was manfactured in 06 not knowing whats been done to it there is no knowledge of its life expectancy. :down:

So I was looking at getting two brand new mcp355's until I ran across these mcp350s for 25 each. But his have the black impellar..................

scgt1
01-12-2010, 10:51 PM
I bought two of the pumps that Scgt1 is refering to. They're non-branded MCP350/DDC1 pumps with black impellers.

I've never owned any other DDC pumps so I can't compare their performance/noise but these work well.

Here's a picture of the inside:

http://img691.imageshack.us/img691/2101/dsc00458l.jpg

Two wires? These from [H]Forum from the youngster?

Waterlogged
01-12-2010, 10:53 PM
Why do you say do not want?

I really don't want the so called mcp355 I have that was manfactured in 06 not knowing whats been done to it there is no knowledge of its life expectancy. :down:

So I was looking at getting two brand new mcp355's until I ran across these mcp350s for 25 each. But his have the black impellar..................

That is for the model that it is unknown if you can solder mod it.

Avoid black impellers, there old as dirt and likely nearing E.O.L.. You want blue impeller that looks like the one in the solder mod article.

viper2004
01-12-2010, 11:05 PM
Two wires? These from [H]Forum from the youngster?

Yep and yep


That is for the model that it is unknown if you can solder mod it.

Avoid black impellers, there old as dirt and likely nearing E.O.L.. You want blue impeller that looks like the one in the solder mod article.

These particular pumps are brand new so should last a while. I can't speak for their performance or longevity since I haven't used them in a loop yet (only used them for leak testing so far).

scgt1
01-12-2010, 11:07 PM
That is for the model that it is unknown if you can solder mod it.

Avoid black impellers, there old as dirt and likely nearing E.O.L.. You want blue impeller that looks like the one in the solder mod article.

Well hell if thats the case. Then might as well order mcp 355 pumps since that thread you posted is just a cluster F on what part numbers/version numbers the 350's arrive as.

Not to mention everyone talked about posting info and nothing has been posted since late Nov.:ROTF:
I mean come on. I'm just at a loss here. 55-60 for mcp355's or $60 for two new mcp350s
Sigh
regardless I'll be putting XSPC Restops on them. If that really matters in what they will flow.

Waterlogged
01-12-2010, 11:24 PM
These particular pumps are brand new so should last a while. I can't speak for their performance or longevity since I haven't used them in a loop yet (only used them for leak testing so far).

Well, the original DDC1's (black impellers) are also the weakest of all the DDC's. They do have a bit of a history for being quiet and I have heard a few ppl rave about life span. Still, I have to come back to actual performance, if it were me. . .I'd pass.


Well hell if thats the case. Then might as well order mcp 355 pumps since that thread you posted is just a cluster F on what part numbers/version numbers the 350's arrive as.

Not to mention everyone talked about posting info and nothing has been posted since late Nov.:ROTF:
I mean come on. I'm just at a loss here. 55-60 for mcp355's or $60 for two new mcp350s
Sigh
regardless I'll be putting XSPC Restops on them. If that really matters in what they will flow.

I'm trying, the 350 I ordered at the end of that topic was the older style (like the one you need) and I just haven't found the time to actually contact P-PC's to see if they'd go through their stock of 350's just to find one particular pump for me. I may have a road trip to FrozenCPU on tap for this weekend if they still have a certain something in stock that I've been looking to get my hands on. I may just ask them while I'm there. :D It costs a lot more than I want to pay but, it'd probably be worth it if I can get the pump I need for the test.

scgt1
01-12-2010, 11:35 PM
Must be nice to live close to a place like that. LOL
Whats the deal with Petras Tech Shop??? Nothing is ever in stock. :-(

Waterlogged
01-12-2010, 11:41 PM
Must be nice to live close to a place like that. LOL
Whats the deal with Petras Tech Shop??? Nothing is ever in stock. :-(

It's ~1½hr drive each way, so it's not that close.

Petra's, I believe is in the process of moving, hopefully to a bigger place so they can have more of the important inventory.

scgt1
01-12-2010, 11:44 PM
It's ~1½hr drive each way, so it's not that close.

Petra's, I believe is in the process of moving, hopefully to a bigger place so they can have more of the important inventory.

Yea well I live in North Texas. They only place I know of that carries any watercooling goods is Micro:banana::banana::banana::banana:. Thats not saying much. The store is a mess and its organized like a 5 yearolds bed room. :down:

Along with that Important inventory comes the IMPORTANT CHEAPER PRICES THEN ANYONE ELSE.

Waterlogged
01-13-2010, 10:58 AM
OK, so I finally got the time to fire off an inquiry to P-PC's about getting my hands on the right 350 and they responded that both they and Swiftech are out of them, replenishment's expected in possibly 1-2 weeks. :(

scgt1
01-13-2010, 11:04 AM
OK, so I finally got the time to fire off an inquiry to P-PC's about getting my hands on the right 350 and they responded that both they and Swiftech are out of them, replenishment's expected in possibly 1-2 weeks. :(
Now that would be Performance PCS correct?

scgt1
01-13-2010, 11:12 AM
Just took apart my supposid MCP355 pump
The sticker on the housing is as follows:
Laing DDC Series
Model DDC-2TPMP
part no 71710
Serial 6068133
Volts 12
Amps 1.5
mfr 07/06

The date is what scares me being almost 4 years old. There can't be much life left in her.
Now taking the housing off and pulling out the internals There isn't a version stamped in the board, but there is a small sticker in red font that says S.2

Also there are 4 wire contacts as follows:
1.Blank
2.Blue wire
3.Yellow Wire
4.Black wire
Nothing else.


Oh wait there is a version
Laing v6.0

The Impellar is also Brown.
So wtf is this thing?
LOL

Not like it matters its so old I don't want to run it in my new/first wc build.


UPDATE Upon inspecting the sticker on the mount base there is another sticker below:
Type DDC-2 TPMP
DC 12V 18W TF60
IP32 Made in EU

So it obviously is a MCP355 being a 18w model.

Waterlogged
01-13-2010, 11:22 AM
Now that would be Performance PCS correct?

Yep, but looking at their product listing, iut doesn't show it as OOS. :confused:


Just took apart my supposid MCP355 pump
The sticker on the housing is as follows:
Laing DDC Series
Model DDC-2TPMP
part no 71710
Serial 6068133
Volts 12
Amps 1.5
mfr 07/06

The date is what scares me being almost 4 years old. There can't be much life left in her.
Now taking the housing off and pulling out the internals There isn't a version stamped in the board, but there is a small sticker in red font that says S.2

Also there are 4 wire contacts as follows:
1.Blank
2.Blue wire
3.Yellow Wire
4.Black wire
Nothing else.


Oh wait there is a version
Laing v6.0

The Impellar is also Brown.
So wtf is this thing?
LOL

Not like it matters its so old I don't want to run it in my new/first wc build.


UPDATE Upon inspecting the sticker on the mount base there is another sticker below:
Type DDC-2 TPMP
DC 12V 18W TF60
IP32 Made in EU

So it obviously is a MCP355 being a 18w model.

That's all I need to tell me that pump is a keeper until it dies. Those are the strongest pumps made by Laing and are highly coveted by those that know how to take care of them. :yepp:

scgt1
01-13-2010, 11:30 AM
Yep, but looking at their product listing, iut doesn't show it as OOS. :confused:



That's all I need to tell me that pump is a keeper until it dies. Those are the strongest pumps made by Laing and are highly coveted by those that know how to take care of them. :yepp:
Don't they have a rated 5 year term though? Based on how well the products I got from Turk-FX on [H]Forum were taken care of I don't know if I would trust this pump. Not to mention the Ceramic area doesn't look healthy. Will shoot a photo and update this post.

http://i75.photobucket.com/albums/i320/scgt1/Slumber%20Parties%20Case/Light%20Box%20Test/IMG_2453.jpg
http://i75.photobucket.com/albums/i320/scgt1/Slumber%20Parties%20Case/Light%20Box%20Test/IMG_2454-1.jpg
http://i75.photobucket.com/albums/i320/scgt1/Slumber%20Parties%20Case/Light%20Box%20Test/IMG_2455.jpg
http://i75.photobucket.com/albums/i320/scgt1/Slumber%20Parties%20Case/Light%20Box%20Test/IMG_2456-1.jpg

Hondacity
01-13-2010, 11:31 AM
scgt1

i'd like to bury that pump :D

scgt1
01-13-2010, 11:43 AM
scgt1

i'd like to bury that pump :D

I'm sure you would. Burry it right in your loop.

Hondacity
01-13-2010, 11:49 AM
loop testing that is...

i have more than 6 ddc pumps for my daily loop...

scgt1
01-13-2010, 11:49 AM
http://www.xtremesystems.org/forums/showpost.php?p=4197452&postcount=24
Updated the thread with photos of my pump. Doesn't look like it was kept well care of to me.
Maybe its just me.

It did have uv green die in it and he said it was antifreeze mixture. There was sh%t floating in it as can be seen in the work log in my sig.

scgt1
01-13-2010, 11:50 AM
loop testing that is...

i have more than 6 ddc pumps for my daily loop...

wtf
6 pumps in one loop? :shocked:

Hondacity
01-13-2010, 11:54 AM
wtf
6 pumps in one loop? :shocked:

i use two...i have a bunch for back up....2+ pumps just vibrate too much

Waterlogged
01-13-2010, 11:57 AM
Ouch! That DDC2 has seen better days. :shakes: That actually looks like it might be algae on the impeller, how easily can you scrape it off?

Shot a response off to P-PC's and got back a very cryptic message about "product replacement" from James. :shrug: He wants me to call, unfortunately, I need to split for work now. I see if I can get some time tomorrow to follow up on this. . .I'll try to keep y'all updated.

scgt1
01-13-2010, 01:25 PM
It scrapes off ok. I'm sure soaking in vinegar would clear it up.

NaeKuh
01-13-2010, 01:27 PM
http://i75.photobucket.com/albums/i320/scgt1/Slumber%20Parties%20Case/Light%20Box%20Test/IMG_2456-1.jpg

That my friend looks like the impeller from DDC-2

The DDC-1 has a black or brown impeller, that looks red like mine which are in pairs.

http://i125.photobucket.com/albums/p73/aigomorla/IMG_0082.jpg

scgt1
01-13-2010, 02:08 PM
That my friend looks like the impeller from DDC-2

The DDC-1 has a black or brown impeller, that looks red like mine which are in pairs.

http://i125.photobucket.com/albums/p73/aigomorla/IMG_0082.jpg

Well as stated back on This post (http://www.xtremesystems.org/forums/showpost.php?p=4197431&postcount=22)the part numbers state it as a DDC2 which means nothing to me being the last month or so is all I've ever read up on watercooling. I honestly don't feel trustworthy enough in using this pump because of its age. The condition the fluid was in (as seen in my Worklog link below) along with the condition of the rest of the parts from the deal with Turk-FX on [H]Forum.

I basically got raped in the arse without knowing it at time of agreeing on the deal. Since all I was shown were 4 pics of everything it all appeared fine and I wasn't told about any damage to anything. Well when I received it all that was a different story. As the worklog shows. :mad:

So back to the topic at hand:

Since the MCP350's I have access to are the unmodable black impellar versions. I should just bite the bullet and order two MCP355's from some online etailer then? So I'm not playing some cat and mouse crap trying to find a matching pair somewhere.

Burninator
01-13-2010, 03:26 PM
loop testing that is...

i have more than 6 ddc pumps for my daily loop...

jeez, want to throw me another one? :D

NaeKuh
01-13-2010, 04:03 PM
Well as stated back on This post (http://www.xtremesystems.org/forums/showpost.php?p=4197431&postcount=22)the part numbers state it as a DDC2 which means nothing to me being the last month or so is all I've ever read up on watercooling. I honestly don't feel trustworthy enough in using this pump because of its age. The condition the fluid was in (as seen in my Worklog link below) along with the condition of the rest of the parts from the deal with Turk-FX on [H]Forum.


There isnt a better pump then the DDC-2

Only problem is that its prone with hardware problems.

They work great when they work, but they die out of no where.

Ive been playing with mine to increase its life, adding sinks to the rear i think helps it from over heating and dying.

But a DDC-2 vs a DDC-1 is a big difference.

As i said they dont make them as good as they used to.

Waterlogged
01-13-2010, 08:48 PM
http://i125.photobucket.com/albums/p73/aigomorla/IMG_0082.jpg

ZOMGWTFBBQ!!!

You have one of those tops too??:rofl::rofl::ROTF::ROTF::p:

http://img32.imageshack.us/img32/2750/hardwareluxx.jpg


BTW, I think the e-mail that James sent me was probably by mistake. I got another one from P-PC's about 3 min. after his which was an actual response to my question. They've since updated the site to show the 350 OOS. Look like I take that road trip this weekend.

skinnee
01-14-2010, 11:06 AM
Its not the same WL, you didn't use the flash. :D

Waterlogged
01-14-2010, 11:11 AM
Its not the same WL, you didn't use the flash. :D

:rofl: I can correct that slight oversight real easily.:D

irenedakota
01-14-2010, 12:04 PM
I just got my stuff from P-PCs, MCP350 is the mod able one.

Now, the question is, should I mod it or not... How much noisier is the 355 then the 350?

Petra
01-14-2010, 12:19 PM
I just got my stuff from P-PCs, MCP350 is the mod able one.

Now, the question is, should I mod it or not... How much noisier is the 355 then the 350?

You know, you don't have to bridge the pads and lock the pump at DDC-3.2 spec... you could solder in a switch so that the pump could be toggled between 3.1/3.2 spec (though, you have to power down the pump for the toggling to take effect, as I recall).

irenedakota
01-14-2010, 12:46 PM
You know, you don't have to bridge the pads and lock the pump at DDC-3.2 spec... you could solder in a switch so that the pump could be toggled between 3.1/3.2 spec (though, you have to power down the pump for the toggling to take effect, as I recall).

Haven't thought of that, good idea. Thanks!

NaeKuh
01-14-2010, 12:49 PM
ZOMGWTFBBQ!!!

You have one of those tops too??:rofl::rofl::ROTF::ROTF::p:


i was like one of the first with it.

And when i tried to put them on 3.2's they wouldnt fit.

So i had martin mod it for me so it would fit.

:P

So technically im the only one with that top which can take both the 3.2 and 2.

Waterlogged
01-14-2010, 11:28 PM
i was like one of the first with it.

And when i tried to put them on 3.2's they wouldnt fit.

So i had martin mod it for me so it would fit.

:P

So technically im the only one with that top which can take both the 3.2 and 2.


Say hello to my little friend. :rofl:

Pardon the mess, I haven't used it in a few weeks and haven't had the time to cleaned it up since
http://img19.imageshack.us/img19/5253/smithyr.jpg

Even though a simple drill press (I have a 13" 16 speed floor type:D) with the proper drill and setup can also do the mod required. ;)

Petra
01-15-2010, 07:53 AM
The only way right now is to take them apart and visually inspect them, they should look exactly like they do in the mod article. The newer ones don't have the extra little bare wire on them.

Here is what a new (do not want) one looks like.
http://www.xtremesystems.org/forums/showpost.php?p=4108625&postcount=9

Hmm, I'm thinking that they just relocated the solder pad for the 3.1/3.2 toggle to the other side of the PCB and/or slightly changed the method for the toggle--it's still cheaper for Laing to manufacture one part and sell it as two products.

Waterlogged
01-15-2010, 08:17 AM
Hmm, I'm thinking that they just relocated the solder pad for the 3.1/3.2 toggle to the other side of the PCB and/or slightly changed the method for the toggle--it's still cheaper for Laing to manufacture one part and sell it as two products.

I was wondering when you would show up and chime in Alex.

It's apparently the same PCB as the 3.25 but from everything we have been able to figure out, everything on both pumps is soldered the same. :shrug:

Here's the full topic were much of this "discovery" took place.

http://www.xtremesystems.org/forums/showthread.php?t=238316

I'm heading to FrozenCPU a little bit later today to see if I can get my hands on one of those pumps to play with.

Petra
01-15-2010, 08:49 AM
I was wondering when you would show up and chime in Alex.

It's apparently the same PCB as the 3.25 but from everything we have been able to figure out, everything on both pumps is soldered the same. :shrug:

Here's the full topic were much of this "discovery" took place.

http://www.xtremesystems.org/forums/showthread.php?t=238316
Not seeing much in the way of useful information in those 4 pages... aside from a PCB revision making more sense now due to the introduction of the PWM controlled DDC's. All this should really take is a complete tear-down of a couple different pumps--we got lucky with the first DDC-3.x PCB design. Unfortunately, I don't have any of the new ones, nor do I have the spare cash to buy several of them to figure this out.

Waterlogged
01-15-2010, 08:55 AM
Not seeing much in the way of useful information in those 4 pages... aside from a PCB revision making more sense now due to the introduction of the PWM controlled DDC's. All this should really take is a complete tear-down of a couple different pumps--we got lucky with the first DDC-3.x PCB design.

Which is what I'm trying to do. Got a 3.25 right here beside me for comparison. ;)

I got a feeling these new pumps aren't going to be easily mod-able. Ever since I heard about Gabe having that PWM DDC at CES, my gut tells me that is what the 4th pad is for.

Waterlogged
01-15-2010, 03:53 PM
OK, so I'm obviously back from my road trip to FCPU. Things did not go well. It seems it's going to be luck of the draw as to how I'm gonna get one of those pumps, something for which I don't have the spare cash to do. I thought if I looked for a serial number higher than the one on Burninator's (now Hondacity's) pump, it'd almost be guaranteed to be the same, :nono:. . .the first pump that we tried had a SN that was quite a bit higher and it still turned out to be the old 3.1 PCB. They had 11 more but didn't fell like putting Chris through the headache if it wasn't going to pan out. Back to the drawing board. http://deephousepage.com/smilies/conf40.gif

Petra
01-15-2010, 10:26 PM
If you do feel like reverse engineering one of the pumps yourself, this may be of some use: http://www.st.com/stonline/products/literature/ds/8348.pdf (it's a link to the datasheet for the microcontroller that Laing used in the standard DDC-3.1/3.2 pumps). ST Microelectronics model 7FLITE35F2M6

I do have a bit of concern over whether or not Laing would have moved the RPM ceiling value into the microcontroller's programming for the PWM version (e.g. a different programmed ceiling for each model, rather than a switch/solder pad to toggle between operating modes). I'd have to do some experimenting with one, I suppose.

scgt1
01-15-2010, 10:41 PM
Ok I've gotta ask. Is this Petra from Petras tech?

Hondacity
01-16-2010, 01:14 AM
jeez, want to throw me another one? :D

i thinks about it


OK, so I'm obviously back from my road trip to FCPU. Things did not go well. It seems it's going to be luck of the draw as to how I'm gonna get one of those pumps, something for which I don't have the spare cash to do. I thought if I looked for a serial number higher than the one on Burninator's (now Hondacity's) pump, it'd almost be guaranteed to be the same, :nono:. . .the first pump that we tried had a SN that was quite a bit higher and it still turned out to be the old 3.1 PCB. They had 11 more but didn't fell like putting Chris through the headache if it wasn't going to pan out. Back to the drawing board. http://deephousepage.com/smilies/conf40.gif

man, this got me a lil worried...i don't think i'll tinker much with this pump until we see more of these pumps(350 rev2?). it'll be interesting to see this pwm pumps from our fave retailers though. more pumps more inventory


If you do feel like reverse engineering one of the pumps yourself, this may be of some use: http://www.st.com/stonline/products/literature/ds/8348.pdf (it's a link to the datasheet for the microcontroller that Laing used in the standard DDC-3.1/3.2 pumps). ST Microelectronics model 7FLITE35F2M6

I do have a bit of concern over whether or not Laing would have moved the RPM ceiling value into the microcontroller's programming for the PWM version (e.g. a different programmed ceiling for each model, rather than a switch/solder pad to toggle between operating modes). I'd have to do some experimenting with one, I suppose.

thanks for the link..bookmarked :)


Ok I've gotta ask. Is this Petra from Petras tech?

yep

voigts
01-16-2010, 03:36 AM
I ran an original black impeller DDC-1 for over 2 years with no hiccups whatsoever. I just recently switched to an Aquastream XT just to get an even quieter pump. I personally would take one of the original black impeller versions over the blue 3.1, as the black impeller versions have a higher head pressure than the 3.1 blue impeller versions. I saw that thread on HF and if I was in the market for this pump, I would jump on it.

Petra
01-16-2010, 01:52 PM
If you do feel like reverse engineering one of the pumps yourself, this may be of some use: http://www.st.com/stonline/products/literature/ds/8348.pdf (it's a link to the datasheet for the microcontroller that Laing used in the standard DDC-3.1/3.2 pumps). ST Microelectronics model 7FLITE35F2M6

I do have a bit of concern over whether or not Laing would have moved the RPM ceiling value into the microcontroller's programming for the PWM version (e.g. a different programmed ceiling for each model, rather than a switch/solder pad to toggle between operating modes). I'd have to do some experimenting with one, I suppose.

For anyone who's interested, here's a picture:
http://www.petrastech.com/other/ddc31-pcbtop.jpg

...and the datasheet for those Fairchild FET's can be found here: http://www.fairchildsemi.com/ds/SI%2FSI4532DY.pdf (pretty sure it's right, closest match I could find)


Ok I've gotta ask. Is this Petra from Petras tech?
Yeah, I'm the guy who started Petra'sTech and Petra's Tech Shop.


I ran an original black impeller DDC-1 for over 2 years with no hiccups whatsoever. I just recently switched to an Aquastream XT just to get an even quieter pump. I personally would take one of the original black impeller versions over the blue 3.1, as the black impeller versions have a higher head pressure than the 3.1 blue impeller versions. I saw that thread on HF and if I was in the market for this pump, I would jump on it.
The performance difference between the two pumps is negligible for for the majority of users--the improved reliability and ability to toggle the pump back and forth between 3.1 and 3.2 spec more than make up for the slight difference at the top end of the performance curve.

http://www.petrastech.com/other/mcp350-31.PNG

For reference, the point where performance is dead even comes at about 2.5mH2O (which I'm not going to bother converting to a more useful unit) and 200L/hour is about 0.87 US gallons/minute. In other words, if a DDC-1 could move more than about 0.87GPM through your loop, then you'd see a slight performance improvement with the DDC-3.1 and the DDC-1 would have a slight advantage in loops incurring a pressure drop high enough to drop below that. Either way, the difference in fowrate would be miniscule.

Waterlogged
01-16-2010, 02:04 PM
Alex, I wasn't really planning on going that far but if all it takes to expose the entire PCB is desoldering the 12 wires from the coil unit, I think I can handle that pretty easily. :up:

Petra
01-16-2010, 02:24 PM
Alex, I wasn't really planning on going that far but if all it takes to expose the entire PCB is desoldering the 12 wires from the coil unit, I think I can handle that pretty easily. :up:

Just don't forget to chip away the conformal coating from the grooves that the wires sit in.... it makes removing them a lot easier.

scgt1
01-16-2010, 03:21 PM
Yeah, I'm the guy who started Petra'sTech and Petra's Tech Shop.


Wheres all the goods at man? LOL All the good stuff is OOS I got parts to order soon. :up:

Petra
01-16-2010, 04:17 PM
Alex, I wasn't really planning on going that far but if all it takes to expose the entire PCB is desoldering the 12 wires from the coil unit, I think I can handle that pretty easily. :up:
Forgot to mention... We can make guesses and experiment by feeding the microcontroller different inputs, but it will always be a "black box" of sorts without the code they programmed it with. So, really, there's only so much reverse engineering that we can do (not to say that a toggle for the newer pumps couldn't be found).

Burninator
01-16-2010, 07:13 PM
i thinks about it

:D.

Waterlogged
01-23-2010, 08:10 PM
Sorry for the resurrection guys but I have a bit of an update.

OK, so P-PC's got more MCP350's in stock and I got back in touch with them to see if they could visually check the PCB before shipment. Sadly I got "Unfortunately we just don't have the time to do this. Sorry." for a reply. :( So, I'm going to order 2 more (along with a load of other things I need) and hope for the best. . .if I'm lucky, all the older PCB's will have been cleared out by now and both will be what I'm looking for.:up:

Waterlogged
01-28-2010, 10:24 PM
UPDATE!

:woot:

Got my package from P-PC's today and both the 3.1's I ordered are the new PCB, so testing will begin as soon as this frelling nasty weather system moves out and temps get back to slightly above 0°C, which doesn't look like it will happen until at least Feb 7 at the earliest. Closest I see between now and then is -1°C on the 3rd according to weather.com. :(:mad:

:idea:

If I get really lucky, I can bypass the weather all together and take this stuff to work and get it done quicker without freezing my arse off. :rocker:

Either way, I'll start a new topic for the results. ;)

M@ssaiko
02-07-2010, 05:35 AM
any news on the mod?

NaeKuh
02-07-2010, 03:10 PM
ive been very lucky with the koolance branded pumps.. :T

I think im gonna stay in koolance's territory again for a while..

The recent deaths of all the DDC's i see is scaring me.. however none of them was one branded by koolance.

Waterlogged
02-07-2010, 10:40 PM
any news on the mod?

I have a break coming up Feb 15-19 at work where I can do my testing there, after that, I can take the 2 pumps I need to apart and then the real fun starts with the PCB's. I'll post my findings in a new topic but, I'll say this right now, the odds are very high that the 4th pad on the PCB is for PWM control.

M@ssaiko
02-08-2010, 12:20 AM
I have a break coming up Feb 15-19 at work where I can do my testing there, after that, I can take the 2 pumps I need to apart and then the real fun starts with the PCB's. I'll post my findings in a new topic but, I'll say this right now, the odds are very high that the 4th pad on the PCB is for PWM control.
thanks waterlogged!!
I'll be waiting then ...
despite: 2 of 5 pumps I have are 3:15....