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  1. #1
    Masterz's Avatar
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    Impellar wear ring....Making my own,

    I was thinking of making my own wear ring, does anyone happen to have the specs on it?

    Also I spoke with a pump specialist today at work and he said if I could cut some labrinths in the wear ring it would help reduce pressure loss internally and possibly gain some performance. Has anyone ever played with different wear ring designs for a some performance gains?

    I also have access to alot of exotic materials, bronze, brass, many grades of stainless, vestbell ( spell) and many more... anyone ever experiment with them as well???

    Just some ideas to throw out there to brain storm..


  2. #2
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    Quote Originally Posted by Masterz View Post
    I was thinking of making my own wear ring, does anyone happen to have the specs on it?

    Also I spoke with a pump specialist today at work and he said if I could cut some labrinths in the wear ring it would help reduce pressure loss internally and possibly gain some performance. Has anyone ever played with different wear ring designs for a some performance gains?

    I also have access to alot of exotic materials, bronze, brass, many grades of stainless, vestbell ( spell) and many more... anyone ever experiment with them as well???

    Just some ideas to throw out there to brain storm..
    Great idea just alittle late..Riva produces a SS wear ring and sell them pretty cheap, I don't know how you could tool up and compete for the price they sell them with their 60% mark-up. On the OEM wear rings it's kind of the same thing, you can buy one from your dealer for 100+ dollars.
    As per changing the design, If you have the capibilties to make these parts, your effort would be better rewarded if you designed/build high speed products. Ride plate, SC's, headers, improved OEM parts, fix to the RXP-X overstuff, Ect............................................. And if it's a great product, Jerry might even sell it right here on his store..18,845 speed freaks strong!!

  3. #3

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    [hijack] Jason, you need to check out the Louisiana Connection thread in the Southeast Rides forum. Lots of exciting stuff going on there! [/hijack]

    About the wear rings... you bring up some interesting points.

    Laby's - It actually wouldnt help any to put labys in the wear ring. They would not be oriented correctly to the impeller tips and the relative motion is in the wrong direction. However, laby's cut into the tips of the impeller may do something for us. You'd basically have to cut a narrow groove all the way down the edge of the blade.

    Materials - I, too, have thought about Vespel as a wear ring material. However, the one place where Vespel doesn't work well is in abrasive service. Abrasion is exactly what causes our wear rings to go away. Little bits of dirt and sand are the problem. Now... I personally don't like the idea of running a stainless steel wear ring on a stainless steel prop. As you know, stainless has a tendancy to gall when run in close proximity to stainless. There are cases where it will work, but they require a minimum difference in hardness. I would be interested in trying a yellow metal (brass, bronze, etc) because of the corrosion and erosion resistance as well as compatibility with the stainless prop. It could possibly have the advantages of stainless and plastic.

    Mike

  4. #4
    Masterz's Avatar
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    Quote Originally Posted by engineermike View Post
    [hijack] Jason, you need to check out the Louisiana Connection thread in the Southeast Rides forum. Lots of exciting stuff going on there! [/hijack]

    About the wear rings... you bring up some interesting points.

    Laby's - It actually wouldnt help any to put labys in the wear ring. They would not be oriented correctly to the impeller tips and the relative motion is in the wrong direction. However, laby's cut into the tips of the impeller may do something for is. You'd basically have to cut a narrow groove all the way down the edge of the blade.

    Materials - I, too, have thought about Vespel as a wear ring material. However, the one place where Vespel doesn't work well is in abrasive service. Abrasion is exactly what causes our wear rings to go away. Little bits of dirt and sand are the problem. Now... I personally don't like the idea of running a stainless steel wear ring on a stainless steel prop. As you know, stainless has a tendancy to gall when run in close proximity to stainless. There are cases where it will work, but they require a minimum difference in hardness. I would be interested in trying a yellow metal (brass, bronze, etc) because of the corrosion and erosion resistance as well as compatibility with the stainless prop. It could possibly have the advantages of stainless and plastic.

    Mike
    Matt S. was the guy telling me about putting Labys in the wear ring...It made since what he was saying... but I do see your point..

    But according to what they said, vespel was real good for abrasive applications... That is why they used it alot for the bushings in the vertical pumps. IDK thought cause I am just an apprentice...lol

    Yeah, I don't like the idea of a SS wear ring with the SS impellar... I am considering doing the bronze impellar as an experiment, if I can find the dimensions it shouldnt take me long to make one.


    If ya ever get a chance, I am on days workin in the CMB if ya wanna throw around a few ideas.

  5. #5

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    Vespel is good for a lot of things, but abrasion isn't one of them. BTW, vertical pump bushings are the ideal location for that stuff.

    I'm working nights right now on the EPLA-W turnaround, MLG-01 turbine deck. Unfortunately, when I get off nights, I'm going back to BRPP.

  6. #6

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    Just to check, I found this straight from Dupont, "DuPont™ Vespel® CR-6100 is used for I.D.-mounted (in compression) wear components in nearly all centrifugal pump types in non-abrasive process services up to 500°F (260°C)."

  7. #7
    Masterz's Avatar
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    I didnt doubt ya...lol

    I was just going off what I heard from someone else..I am still learning all the different types of material we are dealing with..


    I would still like to experiment with some bronze or brass and see what we can do just for fun..

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