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  1. #1
    rxpredviper's Avatar
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    Lucky 13 Adjustable Pump Cone

    Any one know how Lucky 13 Adjustable Pump Cone work on a pump ?? and why work that way???


  2. #2
    rxpredviper's Avatar
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    really no one lol..so some of you guy just buy them and dont event know how a work??

  3. #3
    Hamad's Avatar
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    It's only for decoration
    to put all those colored rings

  4. #4
    rxpredviper's Avatar
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    I know lol..probably we cant put some light On .lmaoo

  5. #5
    ptscon's Avatar
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    I think the way it controls the RPM is when you add/remove rings the cone moves towards/away from the nozzle, in effect reducing/increasing the path through which water can exit.

    More rings, you reduce the path of the water creating more resistance thus reducing RPMs. Less rings, you increase the path so RPMs go up since there's less resistance.

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  7. #6
    Vern's Avatar
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    It changes the efficiency of waterflow through the pump. It reduces the low pressure area in the pump (center behind the bearings), increasing pressure and thrust. But since it increases pressure, it also makes it harder for the impeller to force water through, reducing rpms. The high flow area on these pumps is on the outside; the inside is more turbulent lower flow. The larger cone reduces the less productive inner area, making the pump more efficient. Obviously there is a diminishing return if the cone is increased too much, hence the adjusting rings to get the best tradeoff of pressure and rpms for your setup.


  8. #7
    Site Admin Green Hulk's Avatar
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    Well said Vern!

  9. #8
    rxpredviper's Avatar
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    so Lucky 13 , Nozzel Ring , do same work ???

  10. #9
    surferd15's Avatar
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    With the L13 pump cone you have to increase your pump nozzle (bore it out) then play with the rings and prop pitch a little to dial it in. It also reduces cavitation out of the whole. But too many rings will bog the motor sligthly.

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  12. #10
    surferd15's Avatar
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    Nozzle rings if you have them for IBR will make life way easier when trying to dial it in.

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