Sicce pumps

<a href=showthread.php?s=&postid=10478658#post10478658 target=_blank>Originally posted</a> by JCTewks
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Is this venturi better than the simple 45 degrees barb put in the intake of the pump?

Thanks,

Loc
 
Id say so because it allows air to enter the water stream from 360 degrees. the best results I have gotten are from it.
 
I messed with my broken impeller, have another on the way but with three layers of mesh on a diy paddlewheel its pullin 40scfh without any sort of venturi, thats just holding up a 1/4" tube to it. Once i get the correct impeller i'll start to mod the intake. These are great little pumps though. I'm guessing it'll do around 60scfh or so.
 
<a href=showthread.php?s=&postid=10480725#post10480725 target=_blank>Originally posted</a> by hahnmeister
Id say so because it allows air to enter the water stream from 360 degrees. the best results I have gotten are from it.

Thanks, I will give it a try on my Genx 4100.

Loc
 
PS7 Suprema

PS7 Suprema

<a href=showthread.php?s=&postid=10478148#post10478148 target=_blank>Originally posted</a> by koraltek
luke...use the force....

i know, not even funny....

but, where may i ask, did you purchase a sicce suprema?
i can buy wholesale...
or should i just do a qo4000, and make the in/out 3/4?
did i see in a pump pic that the 4000 has metal screws like a mag?
does the suprema as well?

The suprema and 4000 don't look anything alike on the outside, tehre are no screws and this pump is almost like a transformer in the way the suction cups are actually inside the pump and you fold them out or keep them covered. It is plastic and there is no metal i can find that is exposed. The pump is smaller than a genx2400 and much lighter. The output stream is very powerful and surprisingly wide. I'm very impressed with this pump. You could use this thing as a powerhead if you wanted, its very small. It would be perfect for a recirc as its super light. My only prob i have with it(besides the broken impeller) is that the volute cover didn't come with any threads, its a very small cover, like the extra cover you get when you buy a pump. So taht kind of sucks. My supplier i know only has a couple left I get them for 65 shipped. PM me if you would like one and i'll see if i can get another.
 
<a href=showthread.php?s=&postid=10480680#post10480680 target=_blank>Originally posted</a> by loc01
Is this venturi better than the simple 45 degrees barb put in the intake of the pump?

Thanks,

Loc

On the QO3000, I tried it both ways, and got better #'s with this venturi.
 
<a href=showthread.php?s=&postid=10483862#post10483862 target=_blank>Originally posted</a> by JCTewks
On the QO3000, I tried it both ways, and got better #'s with this venturi.

Thanks, I still have to jump start to get it running with QO 3000(3 layers), could that be the venturi problem?

Loc
 
I had to trim the mesh WAY back to get it to start on it's own...but a bad venturi doesn't help the problem any either :)
 
All I got was about 35SCFH at 31 watts...but I was helping a friend and did not work on it as long as I would have liked too. I'm guessing it will be 40 or so once it breaks in. I'm waiting for some pics of the skimmer in action from Him. I'm going to try and make it back over to Tony's in the next couple of weeks for a follow-up air and watt reading (He lives about 60 miles from me).

O believe that dudedudedude got 55SCFH at 27 watts.
 
I know folks are starting to favor the QO 4000 pumps but, I got a pair of Sicci 250 pumps a while back and finally modded one. I still have some starting issues with the mesh mod but if my test is a glimps of what these pumps have to offer, I am very happy.

Here's the modded imperler and volute

siccimodimpelervolute.jpg


The meshed impeler

siccimodmeshedimpeler.jpg


the venturi

siccimodventuri.jpg


I got 22 cfm with the pump set 12" into a bucket of salt water.

Sweet! :)
 
Yieks! Exactly SCFH. This is my first time using the Dwyer to measure air flow on a skimmer ... sorry.

Anyway, I've been trimming the mesh and can get it to start with a puff of air in the tube. If I hold the pump in the bucket so there's no restriction on the 3/4 PVC in take and put a slight restriction on the discharge I can get it to meter to hold at 26 SCFH.
 
<a href=showthread.php?s=&postid=10549483#post10549483 target=_blank>Originally posted</a> by RichConley
Replace the zip ties with fishing line.

I am a pretty good knot tier (X-Boy Scout), but I've seen many people complain about the mesh coming off too easily with fishing line. I'll try it, any recommendations on technique?
 
The only way the stuff will come off with fishing line is if its not properly tied on, or if the line breaks. I used 50lb (8lb diameter) PowerPro when I did mine, and that stuff isnt going to break. I get the feeling that a lot of people are using 5-6lb mono, and the stuff is just getting chewed through.


The thing about the fishing line, it weighs significantly less than zip ties, makes the impellar much more balanced and creates less drag. Its also quieter.
 
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