duel impeller
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duel impeller

  1. #1
    Retired Air Force Master Sergeant's Avatar
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    Default duel impeller

    Dual jets are awsome out of the hole but suffer top end. What if you had one jet pump with two inline impellers? The first could move a lot of water a slower speed (shallow blades) and the secondary could move a smaller amount of water a greater speed. You would have to fabricate a bowl sized pipe to extend one impeller from the other. May need a boost relief valve? Should help more on the holeshot than at top speed as there is already suction pressure at greater speeds.
    Last edited by Master Sergeant; 01-17-2009 at 08:09 AM.

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    Choking my ....... beerjet's Avatar
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    Wouldnt they have to counter rotate ? Just wondering .
    Love aint nothing but a four letter word, just like f*ck and sh!t .

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    Sounds like the principal as the inducer that Don's pump service has.

    Tim

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    The Aussie's been running 3 stages for years, cant remember the pump name .
    No more Mr. Nice Guy !

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    Quote Originally Posted by beerjet View Post
    Wouldnt they have to counter rotate ? Just wondering .
    That would be my thought as well.

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    Senior Member GT Jets's Avatar
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    Three stage Hamilton/Kodiaks are awsome...

    Uses up to three Jacuzzi style impellers...


    http://www.kemequipment.com/jetparts(pump).html

    GT
    GT


    Quote Originally Posted by Quickjet View Post
    Put a 300 on the back of it, Flywheel it and a nosecone. $15,000 later you'll have a 65 mph pile of shit......

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    Quote Originally Posted by River Rat 005 View Post
    Sounds like the principal as the inducer that Don's pump service has.

    Tim
    Yes, I agree.

  10. #8
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    Quote Originally Posted by beerjet View Post
    Wouldnt they have to counter rotate ? Just wondering .
    Why would they have to counter rotate?

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    Choking my ....... beerjet's Avatar
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    Quote Originally Posted by Master Sergeant View Post
    Why would they have to counter rotate?
    First things first , how are you gonna get impellor (A) to load the face of impellor (B) . The first impellor is exiting water out the sides , not straight back .
    Second , as the impellor turns , it is swirling the water back clockwise . unless the second impellor is counter rotating , your not forcing water into it , they are just following each other around.

    I guess you could run water through the first impellor , through the bowl, stator (or most of a bowls stator, like the last half of a bowl milled off), and then into another impellor to effectivly load the entire impellor face and then you might have some magic happening .

    I probably confused you more so , I'll just say that I dont see a second , inline impellor rotating the same way as the water is doing anything other than taking up space .

    A jet turbine uses a huge fan to compress air down to a smaller fan that counter rotates , that compresses air down further to another fan that counter rotates that one . Not making any sense is it
    Love aint nothing but a four letter word, just like f*ck and sh!t .

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    Quote Originally Posted by GT Jets View Post
    Three stage Hamilton/Kodiaks are awsome...

    Uses up to three Jacuzzi style impellers...


    http://www.kemequipment.com/jetparts(pump).html

    GT
    Just "priced a Hamilton 10" repower jet " for a Cummins deisel 27 ft boat
    today , only 17K

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    Quote Originally Posted by GT Jets View Post
    Three stage Hamilton/Kodiaks are awsome...

    Uses up to three Jacuzzi style impellers...


    http://www.kemequipment.com/jetparts(pump).html

    GT



    It's interesting that they only rate the 3 impeller at 400hp.




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  14. #12
    Senior Member GT Jets's Avatar
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    How about if you made the stator counter rotate? Be a bitch, but also badass....

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    Quote Originally Posted by Quickjet View Post
    Put a 300 on the back of it, Flywheel it and a nosecone. $15,000 later you'll have a 65 mph pile of shit......

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    Quote Originally Posted by jetboatperformance View Post
    Just "priced a Hamilton 10" repower jet " for a Cummins deisel 27 ft boat
    today , only 17K
    Thats it... Chump change my freind chump change... :-)
    Quote Originally Posted by jetboatperformance View Post
    the ensueing fire would likely be extinguished by the sinking however

  16. #14
    Living in a cage of fear thatguy's Avatar
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    3 Stage Hamiltons' are the norm in all the river boats I was around in Alaska for years. I think it is because the clearances are so much greater due to silt and sand in the shallow rivers?
    Some guys went to "Doen" jets that were pretty trick, they were from Europe somewhere, or some shit like that.
    Staged impellers are nothing new in the river boat crowd, to my knowledge.
    Tommy
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