DIY Red Dragon Pumps, gathering ideas.

[Klaus Jansen]

@Konadog...
the attachment of the metal wheels with a hole plate is tested. The perforated plate has thin needles, where the metal wheel is clean-pressed and tightened with a screw.

@Konadog...
first, i help myself.. the metall meshwheels are many steps better, more stability and stronger as the plastic-mesh wheels.
Hahnmeister is right : we unite the new wheels with speedadjustable Red DragonII DC pumps and Standart Red Dragon Pumps...
the airintake i testing the new Metall wheels this weekend. We want look, what wheels are better. We have wheels with 15 - 20 and 25 gramms wight...

regards...

 

[hahnmeister]

Id love to know the comparative difference that the 'loopwheel' impellers have compared to the regular needlewheels.

 

[mavgi]

<a href=showthread.php?s=&postid=9818477#post9818477 target=_blank>Originally posted</a> by Klaus Jansen
@Hahn...
the metallic-meshweel is the better as the plastic-meshweels. We testing the performance of this new wheels at the moment... so we can look, the meshwheels are better as needlewheels, or not. The Material on the picture is stainless Steel, we say V4A in Europe. In the future it is possible for make the meshwheels in HastelloyC or Titan wires. The wire from the metal wheel, was twisted 6 meters long and from a piece And... the BK-Skimmers are not more expensive... the same price.

Regards.. Klaus

Prove that , show to us in picture test result the different between metallic & plastic it will be very interesting to see it .

IMO flex mesh (there is also stiff stuff and good enough ) will preform better and the way it look i don't think it's give the best performance different layer will perform better .

when you able to play with the mesh and to create others shape the performance can changed and always there is option to get a better result.

it's also more easy to change it if it's damage and to keep skimmer working without any problem .


the mesh is better then needle wheel and of course when you able to control and change the speed of the pump RPM the bubble will be more fine and the pump will pull more air and it easy to tune it .

i also know that from a lot of test that i make on metal material to and i will be happy to see a better result.

 

[JCTewks]

Klaus, it's good to have you on this thread...it's nice to hear how the bigger companies like BK are playing around with stuff just the same as us in our kitchens

 

[dudedudedude]

Got my Laguna 5000

Got my Laguna 5000

Well, I took the plunge and got a few Laguna 5000 pumps discounted. PM, if your intersted in having the discount passed onto you. As you can see from the pictures these pumps are the same thing as the Red Dragons except for the custom volute and the other features mentioned by Klaus. From playing around with them so for they are exrtemely powerful yet quite. If mesh moded with a large volute the L/H will be insane at what i guess will be around 45 watts. Plus a shaft like the ones in the red dragon wont be hard to get made and the silicone carbide bearings can be purchased from aquaconnect.de. The first two images are of the actual Red Dragon, the rest the the laguna.

The Laguna 5000

 

[dudedudedude]

Sorry guys, meant to show the pictures in the post rather than just links. What did I do wrong?

 

[RandyStacyE]

Just forgot to use the image tags.

 

[JCTewks]

didn't work...

 

[JCTewks]

 

[dudedudedude]

Test

 

[RandyStacyE]

Just hit 'post reply' then click 'IMG' and paste the URL to the pic. Then the pic will be shown in your post.

 

[dudedudedude]

 

[rishma]

Klaus -

hastelloy seems a bit excessive for salt water service, but the ductility of titanium may be problem when trying to form loops with small radii.

You may find that a duplex 2205 or 2507 has the right mix of properties and is readily available in Europe. Certainly less money than hastelloy C.

The NiTiNOL family of alloys would be very interesting. It readily available in wire and can be heat treated to achieve a huge range of desired properties. Also has a great visual appearance.

Regards

 

[dudedudedude]

Guys, I give up, if anyone wants to fix my original post to have the pictures shown please do so.

 

[JCTewks]

Here you Go Dude

 

[JCTewks]

I'm wondering if the 5000 and 7000 have the same pump bodies with different impellers. just by looking at pictures they seem to be the same. If so, you can just buy the cheaper 5000 pump and go from there.

 

[hahnmeister]

Whaddya know... same impeller...

 

[dudedudedude]

Yup, the 5000 and 7000 are the same bodies, different impeller. The higher rated pumps have a larger body. Simular to the RD 4500 and RD 6000 having a smaller body then the higher rated RD pumps.

 

[JCTewks]

i bet the initialBK pumps that gained them all of their popularity were exactly what we are trying...just a modified volute and impeller on a standard laguna body. i don't really know if any perfmance would be gained in a different set of windings...maybe less watts, but i doubt that actual bubble production would be affected much.

 

[dudedudedude]

Although the windings may be different, I believe that with a thread wheel there will be less resistance compared to the stock impeller. Thus to achieve the low watt performance of a BK in a four pole pump, these pumps may also be run through a voltage regualtor to dial down the voltage to the point in which the potential is more enough to drive the impeller. It may just be possible to get an even greater LPH air to watt ratio than the current BK series by doing so. However, I am not an electrical engineer so I may be woring about this.