my diy needle wheel dart pump

[elfa]

Impressive number of holes, Bill. Hopefully, it will work like magic, but I'm a little skeptical about the thickness of the acryl. My experience with the cones is that they should go through the entire plate and not end in a hole. Perhaps you would need to make an other cone on the other side as well.

Vidar

 

[spazz]

ok bill that thing is awesome looking. i like it and think it will work great because it has so many holes in it. there close together so it will prevent the bubbles from combining. i guess that butt head spazz should get off his lazy butt and get your twist lock done so you can finnish your skimmer. :mixed:

 

[Roland Jacques]

Bill that defuser looks great. i guess you made that on the CNC. how long did it take you to program that and your needle wheel?
i never new you could do that many things with that CNC.

Vidar, that's a good point, makes sence to me. BK does it the same way as bill did.

 

[gobygoby]

:eek2:


where do you find 18" acrylic tube?? largest I have found so far is 12"

 

[ChemE]

<a href=showthread.php?s=&postid=7107691#post7107691 target=_blank>Originally posted</a> by gobygoby
:eek2:


where do you find 18" acrylic tube?? largest I have found so far is 12"

I actually started that thread...
Large Diameter Acrylic Tubes

 

[Roland Jacques]

Spazz,

On overcoming head pressure for the Dart NW air intake. If you put a adjustable venture (or valve on the intake before the venture) as you restrict water flow it should help you overcome the back pressure. I no you will loose some air intake volume but do you loose that much air volume? It seems that if you loose 50% of your air volume that your pump is still pumping a lot of air. (A lot more than other methods) and may be good enough for smaller skimmers and be usable as is.

I guess im asking if you had 2 Spazz Master 2000 NW pumps going on one 7' skimmer (each pump working at 50%) and on the other 7' skimmer have 1 Spazz Master 2000 NW pump and 1 air pump (working at 100%). Witch would be more, reliable, consistent, cheaper, easy to adjust, power efficient....

i could not find the info on how much head does your dart NW pump work at before you want an air pump on it?

 

[gobygoby]

Hey Bill,
How tall are you designing your skimmer?



PS, spazz and bill, you guys are doing an amazing job! so when are you going to make my skimmer.:lol: J/K I know you both busy...unless your not busy then I am not kidding

Take care,
Goby

 

[smjtkj]

Pump and tank

Pump and tank

Hey Spazz,
I was thinking of trying to use this pump to make a needlewheel
for. You mentioned some time back in the thread that a pump with 1 inh inlet and outlet with a large housing for smaller systems. This has the large housing, the 1 inch in and out. and is rated for 1190 gph at 4 foot of head. It is rated at 90 watts.
I was thinking about putting it on a verticle storage tank since it already has a cone top
and I could just fit a riser neck and cup on the 5 inch cover. It is 18 inch diameter and 42 inches tall. What do you think? It won't be as pretty as the acrylic, but how about performance?
Mike

 

[Roland Jacques]

you got any specs on that pump? or a link?

 

[spazz]

<a href=showthread.php?s=&postid=7107817#post7107817 target=_blank>Originally posted</a> by yourfishman
Spazz,

On overcoming head pressure for the Dart NW air intake. If you put a adjustable venture (or valve on the intake before the venture) as you restrict water flow it should help you overcome the back pressure. I no you will loose some air intake volume but do you loose that much air volume? It seems that if you loose 50% of your air volume that your pump is still pumping a lot of air. (A lot more than other methods) and may be good enough for smaller skimmers and be usable as is.

I guess im asking if you had 2 Spazz Master 2000 NW pumps going on one 7' skimmer (each pump working at 50%) and on the other 7' skimmer have 1 Spazz Master 2000 NW pump and 1 air pump (working at 100%). Witch would be more, reliable, consistent, cheaper, easy to adjust, power efficient....

i could not find the info on how much head does your dart NW pump work at before you want an air pump on it?

 

[smjtkj]

No comments Spazz?
Mike

 

[Siklid]

any news on your nw spazz ?

 

[smjtkj]

Here is a likn to the pump.
http://www.pondshop.com/catalog/pumps.htm#TM1200LH Tiny Might

 

[spazz]

Re: Pump and tank

Re: Pump and tank

<a href=showthread.php?s=&postid=7108475#post7108475 target=_blank>Originally posted</a> by smjtkj
Hey Spazz,
I was thinking of trying to use this pump to make a needlewheel
for. You mentioned some time back in the thread that a pump with 1 inh inlet and outlet with a large housing for smaller systems. This has the large housing, the 1 inch in and out. and is rated for 1190 gph at 4 foot of head. It is rated at 90 watts.
I was thinking about putting it on a verticle storage tank since it already has a cone top
and I could just fit a riser neck and cup on the 5 inch cover. It is 18 inch diameter and 42 inches tall. What do you think? It won't be as pretty as the acrylic, but how about performance?
Mike

sorry about the messed up post earler. r/c was messed up and didnt post my answer.

i have looked at trying to modify a mag drive pump. but there is 2 problems i allways run into with these. 1st the inlet and outlet pipes are way too small to get the flow through them. when you convert a pump to a needle wheel you loose all its pressure rated performance of the pump. so the pump cant force all that water and air through that small of a hole.
2nd the impellor would be very difficult to get ballacnce on the shaft. it would be very important to get it perfectly ballanced because its turrning almost twice as fast as a dart pump. the dart runs at 1725 and the mag drive pumps run at 3650 so to get ti to hold together you would need a factory made impellor to replace the original one in the pump. these pumps wont make a very good neelde wheel pump for these reasons.
this is just my opinion and if you really wanted to convert one i feel if there is a will there is a way. it could end up being a costly way but its still a way. lol

 

[smjtkj]

Scott,
This is a direct drive pump not a mag drive!
Mike

 

[spazz]

<a href=showthread.php?s=&postid=7107817#post7107817 target=_blank>Originally posted</a> by yourfishman
Spazz,

On overcoming head pressure for the Dart NW air intake. If you put a adjustable venture (or valve on the intake before the venture) as you restrict water flow it should help you overcome the back pressure. I no you will loose some air intake volume but do you loose that much air volume? It seems that if you loose 50% of your air volume that your pump is still pumping a lot of air. (A lot more than other methods) and may be good enough for smaller skimmers and be usable as is.

I guess im asking if you had 2 Spazz Master 2000 NW pumps going on one 7' skimmer (each pump working at 50%) and on the other 7' skimmer have 1 Spazz Master 2000 NW pump and 1 air pump (working at 100%). Witch would be more, reliable, consistent, cheaper, easy to adjust, power efficient....

i could not find the info on how much head does your dart NW pump work at before you want an air pump on it?

ok what is up with r/c right now. it posted the quote but it didnt post my answer to the quote.
o will here is my answer to the question.


the darts would make a great pump for any skimmer from 2 ft all the way up to 6 ft tall. on skimmers over 3 ft you would get the most air intake if an air pump was used to supercharge the dart to over come the head pressure difference. the valve on the big ugly intake it used to adjust the air intake. its basicaly an adjustable venturie. i love this design because it allows you to adjust you air intake. i would never build a skimmer with a non adjustable venturie on it. there is too many things that can affect venturie performance. so an adjustable one it the only way to be able to fine tune skimmer performance. when the master bill wann gets his master piece finnished you will see one of the best performance skimmers in the world. the difference would be like comparing a ford focus to a ferarri spider. o thats right bill can do that comparrison at home in his back yard. lol the real test will be when we can do a side by side comparison of the big ugly design vs the bubble king design. it would be a close battle and im not sure which one would win. but im confident bills would take the bubble king by a nose.

 

[spazz]

<a href=showthread.php?s=&postid=7110608#post7110608 target=_blank>Originally posted</a> by smjtkj
Scott,
This is a direct drive pump not a mag drive!
Mike

ok now you have my curousity up!!! can you open that bad boy up and take a pic of the impellor for me? if its direct drive then it might have a good chance for a conversion. where did you get that pump? what did they cost? can you stick a measuring tape next to it for size comparison? diameter of impellor? how many rpm's does it run? and any other things you can tell me about that pump. o and is there alot of meat in the housings that could be realived to make it flow better?

 

[smjtkj]

Well I haven't bought the pump yet. i got the info from the tech support guy at the pond shop. The pumps can be bought for about 150.00 if you shop around, even on ebay. The rpm is 3200. And like i said before it has the 1 inch inlet and outlets. I posted a link above to the site where it can be bought. It is expensive there, but has decent info. There is also a pump called the iron mite that is almost identical to the dart. It is 1/8 hp and is 1.3 amps 160 watts.

 

[smjtkj]

I just got off the phone with tech support again on the little pump and it is defenitely direct drive impeller. He explained that the impeller was a layered type centrifigual similar to pool pumps. I think this could work!
Mike

 

[spazz]

<a href=showthread.php?s=&postid=7110939#post7110939 target=_blank>Originally posted</a> by smjtkj
I just got off the phone with tech support again on the little pump and it is defenitely direct drive impeller. He explained that the impeller was a layered type centrifigual similar to pool pumps. I think this could work!
Mike

hold the phone for a second. dont get all excited and start ordering pumps yet. you need to find out what kind of seal is in there. if its not a silicone carbide seal it wont work. the seal would leak after a few weeks of operation.
maybe you can find some one who has one of these and let you take it apart to see how its built inside. if we could get a seal to work for this pump it cold be made into a needle wheel for skimmers. it might take the place of 2-3 sedra's or 2-3 ocean runners.