2-in-1 would be parallel, not seriell.
@neal: Well, I don't remember an exact thread, but what people wrote who bought the top so far.
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2-in-1 would be parallel, not seriell.
@neal: Well, I don't remember an exact thread, but what people wrote who bought the top so far.
Have to be careful about that i think, suspect there might be a lot of placebo effect going on.
referring to Radiical top??Quote:
Originally Posted by creidiki
Radical 53..thanks
Unfortunately Radiical website never said what they were "revising"..I would have preferred a smaller outlet
Alphacool top...only place I saw it sold alone was performance-pcs(which was wrong in the end) but since I lived in FL..shipping and tax it would close to same price as Radiical top and I like the black delrin appearence
So I hope head press is still good
Nice thread! :)
Very useful info and opinions. Let's hope we soon have some "conclusive" data.
For the time being looks like the safe route is Alphacool's top.
The one good thing is that this pump is so versatile... :up:
the pics of the raadical top really puzzle me. I made my own acrylic top modeled as closely as possible to the original top except with a 1/2" inlet. In the first revision I drilled out a hole just like the raadical top outlet, but I found that the impellor would slant sharply toward the outlet and actually hang. In the following revisions I made my outlet almost identical to the original top with only a slightly larger id (original outlet id is 1/4"). It works flawlessly and according to my amateur testing, I am getting almost the same flow as the original raadical top.
Apart from going through the trouble of making one, drilling out the ID of the channels slightly on the Alphacool makes a lot of sense, particularly on the inlet, as the increase in inlet size is what seems to make this pump shine far more than the outlet ID. An inlet only modified regular top gets almost the same flow as a raadical top does.
Nice info, thanks all.
Think I'll wait 'til H20Koeling review is done before drilling my Alpha top.
finally my radiical package arrives...
had to order the DDC-ultra with it. as we can see its with the red impeller, and has a label of 12V 18W...
the Radiical Turbohead enlarge inlet as we can see has no "Lip" to impede water flow, it all thread...
we can also see the enlarge outlet, the way water flow from the impeller facing some obstruction goin to the outlet barb...
I'm no expert into the dynamics of pumps, I only got the equipment to test them, but the knowledge I do got anyhow, tells me, that the extremely large outlet, about twice as large as the impeller holes, will cost a hole lot of pressure, or am I totally wrong?
The tests I did my self, was far from as “high” as on the Radiical turbo top, it was much more wide, but not wider than the outlet on the Radiical turbo top… And my results was abysmal, loosing a lot of pressure AND flow…
Comments please :)
MaGiX
Quote:
Originally Posted by MaGiX
:stick:Quote:
Originally Posted by nikhsub1
IF the pumps are made to deal with backpressure, which I am assuming these DDCs are, then you can squeeze them down into quite a small nozzle and they will still retain quite a bit of flow. There are many pumps out there which are not rated for high pressure. So while they can have say, 3000GPH, it can have abyssmal head.
EDIT: I should add a little more. Your flow may decrease, or seem to, because the "velocity" may be less once you have enlarged that inlet and there is less pressure like nikhsub described above.
I figure I'll mention it here, but in the aquarium and chemical mixing industries, they use a device called an "eductor" which shoots a high pressure jet of liquid through a large cone. Right where the water exits the nozzle, there is a gap in the cone to allow surrounding water to get pulled in from the low pressure created from the fast moving jet of water. A little hard to explain, so here is a link for more clarity:
Laguna Koi
I have 2 of these running in my aquarium and it REALLY increases the flow in my tank. They are huge, but I imagine they can be reduced significantly in size. Additionally, it would HAVE to be run in a reservoir like environment as it relies on surrounding water to be sucked in through the gaps.
seemes like that nozzle translates preassure into flow...?
Ahh, there the answer was, right beside my missing glasses :p:Quote:
Originally Posted by nikhsub1
:slapass:
MaGiX
eXa,
It does. However, you need surrounding fluid to create that extra flow. It works on the same concept that if you hold 2 pieces of paper next to each other and blow between the sheets, the 2 sheets will move toward each other.
If you scaled one of those eductors down, and then had it sitting in a reservoir, when the liquid comes shooting out of that little nozzle, it would pull surrounding liquid into the cone. The cone would have to essentially connect to your tubing that runs through the rest of your system, and then back into the res. It's a far fetched idea, but I could see it working in a system given the correct pump and correct miniaturization.
yeah, but i think most pump have enough flow, its preassure wich is important. so the nozzle wouldnt be needed.