DIY Red Dragon Pumps, gathering ideas.

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Hey jc I was wondering what the rpms were on the lagunas.You think thats why the wattage is higher on those pumps?I should have them sometime next week as long as the seller doesnt drag on shipping them.
 
that could account for SOME of the higher wattage...but most of the extra wattage is prob just from being a cheap chinese pump :D
 
<a href=showthread.php?s=&postid=13609436#post13609436 target=_blank>Originally posted</a> by alpine
Chinese pump or not,I hope it has some potential for a skimmer pump.
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Maybe you save on the pump but in the other way you will pay a lot more in your electric bill.... we pay for watt use and if you can decrease the total watt use you pay less .
 
Dang mavgi you sounded like you were talking to a 2 year old :).The whole watt issue is a big debate I rather not start on Hahns thread.It was until Hahn started this thread that the whole low wattage skimmer pump craze got big.I used beckett skimmers for the better part of 6 yrs.Do you really think I care about how much electricity I waste?I want it to work effeciently,and if I can save a little wattage in the process then great.If not I can care less.

I got the pumps cheap,$10 for one and $12 for the other.If it doesnt pan out,I lose a little money and they will make great saltwater mixing pumps.
 
<a href=showthread.php?s=&postid=13613484#post13613484 target=_blank>Originally posted</a> by alpine
Dang mavgi you sounded like you were talking to a 2 year old :).The whole watt issue is a big debate I rather not start on Hahns thread.It was until Hahn started this thread that the whole low wattage skimmer pump craze got big.I used beckett skimmers for the better part of 6 yrs.Do you really think I care about how much electricity I waste?I want it to work effeciently,and if I can save a little wattage in the process then great.If not I can care less.

I got the pumps cheap,$10 for one and $12 for the other.If it doesnt pan out,I lose a little money and they will make great saltwater mixing pumps.
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Go for it alpine .....let the simple minded suffer :D
 
<a href=showthread.php?s=&postid=13609586#post13609586 target=_blank>Originally posted</a> by mavgi
Maybe you save on the pump but in the other way you will pay a lot more in your electric bill.... we pay for watt use and if you can decrease the total watt use you pay less .
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This is alpines response in my thread if you want to laugh :D

alpine:
So you didnt measure the air draw on the previous pinwheel.I'm not trying to dog you or anything,but your thread title is "The Little Giant that had Red Dragons for lunch".

I cant see how you can make a statement like that without knowing any numbers.The sedra 9000 pump on my ASM G4X pulls 16 scfh and it looks like a lot,but in reality it isnt.

Air draw & wattage is everything when your stateing that your lg is eating red dragons for breakfast.
 
<a href=showthread.php?s=&postid=13613484#post13613484 target=_blank>Originally posted</a> by alpine
Dang mavgi you sounded like you were talking to a 2 year old :).The whole watt issue is a big debate I rather not start on Hahns thread.It was until Hahn started this thread that the whole low wattage skimmer pump craze got big.I used beckett skimmers for the better part of 6 yrs.Do you really think I care about how much electricity I waste?I want it to work effeciently,and if I can save a little wattage in the process then great.If not I can care less.

I got the pumps cheap,$10 for one and $12 for the other.If it doesnt pan out,I lose a little money and they will make great saltwater mixing pumps.
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Air draw & wattage is everything heheeheheheeh :rollface: :beer: :dance:
 
<a href=showthread.php?s=&postid=13613784#post13613784 target=_blank>Originally posted</a> by Young Frankenstein
Well ......... I dont mean to hijack this thread..........but if you want pure engineering and scientific info for venturis and needle wheels, this is the thread to go to.....find the answers you were looking for
http://www.reefcentral.com/forums/showthread.php?s=&postid=13613333#post13613333
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LOL you have to be kidding?that isnt PURE ENGINEERING and SCIENTIFIC INFO,it is a guy who refuses to go with the norm.your pump doesnt produce the numbers you stated EVER and NEVER will the way it is made period.
 
<a href=showthread.php?s=&postid=13614235#post13614235 target=_blank>Originally posted</a> by CMcNeil
LOL you have to be kidding?that isnt PURE ENGINEERING and SCIENTIFIC INFO,it is a guy who refuses to go with the norm.your pump doesnt produce the numbers you stated EVER and NEVER will the way it is made period.
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:sad2:
 
Dang Steve you really cant read can you :)?

I dont take any of my words back.You stated that your pump was going to eat a red dragon for lunch.Air draw & wattage is everything when your trying to beat a red dragon.

So get off this great thread trying to rile people up with nonsense :).
 
<a href=showthread.php?s=&postid=13615089#post13615089 target=_blank>Originally posted</a> by alpine
Dang Steve you really cant read can you :)?

I dont take any of my words back.You stated that your pump was going to eat a red dragon for lunch.Air draw & wattage is everything when your trying to beat a red dragon.

So get off this great thread trying to rile people up with nonsense :).
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Ok ok I had enough of abuse for one day in this forum.................wild turkey time :D
 
Methinks that the 'Red Dragon Eater' was not 'engineered' to actually outperform a Red Dragon, but literally eat it... like a wood chipper. At that, it is a huge success. Look at the teeth on that needlewheel, and the saliva like epoxy dripping off everything like an alien's mouth from the Alien franchise. I wouldn't be shocked if the pump runs on 'acid blood' and a tiny needlewheel jumps out from the center of the larger needlewheel for 'scare factor'. It might even make a shrill scream like one of those beasties in the movies (think Aliens when one of them gets shot with the chainguns) when it runs.
 
<a href=showthread.php?s=&postid=13616300#post13616300 target=_blank>Originally posted</a> by hahnmeister
Methinks that the 'Red Dragon Eater' was not 'engineered' to actually outperform a Red Dragon, but literally eat it... like a wood chipper. At that, it is a huge success. Look at the teeth on that needlewheel, and the saliva like epoxy dripping off everything like an alien's mouth from the Alien franchise. I wouldn't be shocked if the pump runs on 'acid blood' and a tiny needlewheel jumps out from the center of the larger needlewheel for 'scare factor'. It might even make a shrill scream like one of those beasties in the movies (think Aliens when one of them gets shot with the chainguns) when it runs.
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Well it was a scary needle wheel :) I did find and learned from the mistaeks hahn.....its working ok now, I would like it to pull more air so I am keeping a close :hmm6: on the venturis :) ..............well I think I am holding the record for the scariest needle wheel anyway :D
 
sicce-eheimventuripeg.jpg

Hah feeding the air in the center of the pump like this you think may be the best way .........correct?
 
<a href=showthread.php?s=&postid=13545124#post13545124 target=_blank>Originally posted</a> by hahnmeister
Its the impeller diameter/thickness, the volute diameter/thickness, the venturi diameter, and the outlet diameter... all factors here. If you go shrinking a few things w/o changing the others, you can end up with a very hot pump.

For instance, changing the output diameter and venturi alone means that the impeller will be spinning alot of water that doesnt move in/out of the pump... so it is wasting energy on itself. If you start making the impeller smaller, and maybe the volute only as deep as the outlet diameter (outlet diameter and volute depth should match), you are adjusting other parts of the pump so it wastes less energy on itself.

It always makes me think of modern autos...3200-5000lbs of auto to move 200lbs of human... the engine has to waste more power on moving itself than its cargo.
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Hahn, sorry to quote your post from such a long time ago, but i+m really interested in the bold text. Do you think it should work for all types of pumps? I am a little confused here, because my testing of air flow showed me, that increase of up to 50% can be achieved by only changing the volute thickness (leaving the volutes ID the same and also leaving the outlets ID same for all tests).
It was 1mm that made the difference for me, that's why I'm asking if maybe i should increase the outlet's ID??? With 13mm thickness i got T=2min05sec, with 14 mm i got T=1min15sec and at 15mm, T=2min00s. The tests were made on MJ 1000 with a bag of air connected on the air hose and my Beta volute. I tested it twice on two different occasions, second time having a friend over to actually hold the stopwatch and be a judge of my test method.

Regards,

Tarzan
 
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