DIY Red Dragon Pumps, gathering ideas.

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Re: ...and more...

Re: ...and more...

<a href=showthread.php?s=&postid=13391177#post13391177 target=_blank>Originally posted</a> by mgranato
104411IMG_0391.jpg

104411IMG_0402.jpg
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Im jealous... that was the design I wanted to do in the first place... single blocks of clear acrylic... sweet.
 
Jon, do you know if the 2000 and 4200 are the same motorblock? I just got a 4200 in and it looks to be the same size as the old style 7000 that I have ( I think the 2400 replaced the 7000).
 
Thanks for all the king words. This "block design" was actually an accident. The original one I made was the standard round shape milled from some laminated scraps that I had laying around, but when it was done I foolishly had the outlet pipe covering up one of the screws that connect the thing to the pump, DOH! I had enough 3/4" scraps left to laminate another block - then it dawned on me. Instead of wasting all that material, spend the time to cut and mate the pipe at the angle, glue it on - it would be SOOO much easier to do it out of a solid block. All the holes were milled tight enough so that no glue is used to connect any piping which gives me plenty of options for tweaking.

I do think I need to put it back on the CNC to open up the outlet. Right now it holds a 3/4" pipe, I'm thinking it needs to hold a 1" outlet. What do you guys with the experience think, should the outlet be 1" or maybe bigger?

Hahn, I'd be happy to help with one for a different pump.
 
<a href=showthread.php?s=&postid=13393586#post13393586 target=_blank>Originally posted</a> by mgranato
Thanks for all the king words. This "block design" was actually an accident. The original one I made was the standard round shape milled from some laminated scraps that I had laying around, but when it was done I foolishly had the outlet pipe covering up one of the screws that connect the thing to the pump, DOH! I had enough 3/4" scraps left to laminate another block - then it dawned on me. Instead of wasting all that material, spend the time to cut and mate the pipe at the angle, glue it on - it would be SOOO much easier to do it out of a solid block. All the holes were milled tight enough so that no glue is used to connect any piping which gives me plenty of options for tweaking.

I do think I need to put it back on the CNC to open up the outlet. Right now it holds a 3/4" pipe, I'm thinking it needs to hold a 1" outlet. What do you guys with the experience think, should the outlet be 1" or maybe bigger?

Hahn, I'd be happy to help with one for a different pump.
Click to expand...

yes 1" outlet will be the optimum for this pump.
 
Re: 1500 volute

Re: 1500 volute

Now to the US Patent office !!


<a href=showthread.php?s=&postid=13391126#post13391126 target=_blank>Originally posted</a> by mgranato
Here's the volute I came up with for 1500. After it was done, I couldn't resist giving it a name, LOL. My Dwyer should be here on Tuesday, so I won't have any numbers until then.
104411IMG_0371.jpg

104411IMG_0384.jpg

104411IMG_0387.jpg
Click to expand...
 
Thanks for the kind offer and I very well may take you up on it, but I'm currently working on a couple ideas for a more permanent piece than what I've got now for the intake/venturi. I'll post some picks when I get'r done.
 
<a href=showthread.php?s=&postid=13461710#post13461710 target=_blank>Originally posted</a> by nyvp
That's no DIY project that's high end Prof work.
Click to expand...

Jealousy knows no bounds, and I am JEALOUS of that workmanship!
 
So lets just say one was meshing their impeller and messing with new volutes and dropped said impeller on the ground breaking the ceramic shaft....
I screwed up and broke the shaft on my 4200, any way that you guys know to replace it without buying a new $50 impeller that I will instantly hack up, the ceramic shaft broke inside the magnet, and it doesn't appear from what I've looked at that there is an easy way to remove the shaft, it seems to be press fit/glued into the magnet and impeller.....
Since it all rotates on the alignment disk, any certain epoxy the strongest to glue the shaft back into the magnet?
thanks,
Kyle
 
<a href=showthread.php?s=&postid=13501724#post13501724 target=_blank>Originally posted</a> by dew2loud1
So lets just say one was meshing their impeller and messing with new volutes and dropped said impeller on the ground breaking the ceramic shaft....
I screwed up and broke the shaft on my 4200, any way that you guys know to replace it without buying a new $50 impeller that I will instantly hack up, the ceramic shaft broke inside the magnet, and it doesn't appear from what I've looked at that there is an easy way to remove the shaft, it seems to be press fit/glued into the magnet and impeller.....
Since it all rotates on the alignment disk, any certain epoxy the strongest to glue the shaft back into the magnet?
thanks,
Kyle
Click to expand...

I have a friend that received a Koralia (? spelling?) with a broken shaft(ceramic) and used superglue to put it back together and it is still working after 5 months. I know it is not a pump but I thought I would give an idea. (well i guess it is a pump) Do you know the diameter of the shaft if so then maybe you can get some titanium fill rod for TIG welding and make one. It comes in different sizes maybe I could send you a piece if you get me the diameter. If we have that size at work.
 
The only ones I could find online were $50 plus $10 shipping for the 4200, pretty pricey IMO

How much bigger are the magnets in the 4200 vs the 2900?
 
I have both a 4200 and an old style 7000 (same as the 2000/2400/2900 motorblock) and the impellers are identical other than the size of the finned part. I've also found that I can gently "pull" the impeller disc off of the shaft without breaking it...It's kind of scary everytime though :D
 
would a newer style impeller fit on a old style 2000 that has the center suport. i would likt to take the center suport out oif i could some how still.
 
Well mine is "ungently" pulled off, so the magnet is the same size just a different impeller disk on top?
JCTewks, weren't you saying the 2900 and 4200 motor blocks are the same size?
So the 4200 uses the same volute/magnet larger disk and probably more windings in the motor?
 
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