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Petra's Tech Shop - out of stock

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Old 01-24-07, 06:11 PM Thread Starter   #1
kenny_k
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Petra's Tech Shop - out of stock


In case anyone's been looking, I just saw Petra Tech Shop was 'out of stock' on the DDC-2 w/Petra top but I did see them at Sidewinder.
http://www.sidewindercomputers.com/swmcwdeddcpu.html

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Old 01-24-07, 08:20 PM   #2
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Petra's is out of stock on the pump, but not the tops.
http://www.petrastechshop.com/peddcudeddcp.html

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Old 01-25-07, 03:19 AM   #3
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I dunno...seems like a lot of money to spend for no measurable improvement to the system. But hey...it’s your money!
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Old 01-25-07, 05:56 AM   #4
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Quote:
Originally Posted by Graystar
I dunno...seems like a lot of money to spend for no measurable improvement to the system. But hey...it’s your money!


I'll find out in a couple of weeks. As soon as Sidewinder gets those Deltas in I'll be experimenting. How about an FX-55 and a 4400+ - both OC'ed and under Storms? You think that will be enough load for a test loop ...? :evil grin:
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Old 01-25-07, 11:57 AM   #5
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Quote:
Originally Posted by QuietIce
Nowhere in the landscape of watercooling forums will you find a post that says:

“I just switched to a DDC with an aftermarket top and my temperatures dropped!”

And there is a very good reason for this...because it doesn’t. Most people will only see a 0.1 GPM improvement in flow rate by using a Petra top. Some will get no improvement. A few will get a loss of flow. In any case, a DDC+ already provides enough flow such that any increase of any size (or slight decrease) will likely go unnoticed.
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Old 01-25-07, 12:04 PM   #6
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Quote:
Originally Posted by Graystar
“I just switched to a DDC with an aftermarket top and my temperatures dropped!”

And there is a very good reason for this...because it doesn’t.
The circumstances would entirely depend on what equipment the DDC-2 is pumping water through.
And I'm under the impression that another highly attractive reason to use an alternative top with the pump is so you can use 1/2" ID barbs rather than adapting the 3/8" barbs on the stock top.

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Old 01-25-07, 12:17 PM   #7
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Quote:
Originally Posted by Captain Slug
The circumstances would entirely depend on what equipment the DDC-2 is pumping water through.
And I'm under the impression that another highly attractive reason to use an alternative top with the pump is so you can use 1/2" ID barbs rather than adapting the 3/8" barbs on the stock top.
That may be the general belief, but it's not reality. It doesn't matter what equipment is being used.

Using 1/2" barbs, however, is a good reason if it's really a pain to use 3/8" (or if you just want to use 1/2".) Again, the chances of seeing an improvement between 3/8" and 1/2" is pretty slim but if it makes building the system easy then it might have value.

Personally, I use 3/8", but otherwise I would just use a couple of 3/8"-1/2" converters on my DDC if I had to use 1/2" tubing.
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Old 01-25-07, 01:39 PM   #8
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besides the petra and alpha tops look cool ... 8)
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Old 01-25-07, 02:05 PM   #9
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Quote:
Originally Posted by Graystar
That may be the general belief, but it's not reality. It doesn't matter what equipment is being used.

Using 1/2" barbs, however, is a good reason if it's really a pain to use 3/8" (or if you just want to use 1/2".) Again, the chances of seeing an improvement between 3/8" and 1/2" is pretty slim but if it makes building the system easy then it might have value.

Personally, I use 3/8", but otherwise I would just use a couple of 3/8"-1/2" converters on my DDC if I had to use 1/2" tubing.
I'm from Missouri and our motto is "Show Me" (no joke - ever heard of a "Missouri Mule"?), so I'll test that for myself. I'll post results just because but I'm not really doing it for anybody else, just me. Two Delta EFB1212SHE on a heater core and a pair of Storms will make up the loop. I have both an MCP350 and an MCP355 plus a Petra's top and I'll also be switching the tubing sizes from 3/8" to 1/2" - a total of eight configurations. Just for grins I might add another heater core on two or four of the configs but it won't have the Delta's on it, just a couple of Scythes for a pre-cooler.

Sidewinder is now saying end of next week before they get the fans originally it was 20 Jan ...
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Old 01-25-07, 02:22 PM   #10
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Quote:
Originally Posted by QuietIce
I'm from Missouri and our motto is "Show Me" (no joke - ever heard of a "Missouri Mule"?), so I'll test that for myself. I'll post results just because but I'm not really doing it for anybody else, just me. Two Delta EFB1212SHE on a heater core and a pair of Storms will make up the loop. I have both an MCP350 and an MCP355 plus a Petra's top and I'll also be switching the tubing sizes from 3/8" to 1/2" - a total of eight configurations. Just for grins I might add another heater core on two or four of the configs but it won't have the Delta's on it, just a couple of Scythes for a pre-cooler.
Wow! That's a lot of testing! I'm certainly interested in the results. Hope it all goes well!
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