How many GPM does an "A" impeller pump at 7,000 rpm ?
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How many GPM does an "A" impeller pump at 7,000 rpm ?

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    Resident Ford Nut Sleeper CP's Avatar
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    Default How many GPM does an "A" impeller pump at 7,000 rpm ?

    More than likely somewhere in a thread I can find the answer, but this is easier. Does anyone have an idea of what it might be ?

    If not at 7,000 how about 6,000 with a 3.25" outlet ?

    S CP

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    21 Daytona Outlaw's Avatar
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    WHAT???? you don't have a chart for this??
    #55

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    Wet
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    3300-3800 gpm

    Huge variance, but if I remember correctly, an A at 6000 is 3300gpm. So on guesstimation, 7000 would be in the neighborhood of 3800gpm.

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    ^^^


    Thanks.......

    Where did you get that info ?

    I'll do a little research.


    S CP

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    Quote Originally Posted by Outlaw View Post
    WHAT???? you don't have a chart for this??

    Can you believe it........

    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

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    Don't know how to post it but I have a chart here on some testing AT did with their AA impeller. It goes by hp rather than rpm and shows the AA pumping 4,262gpm at 450hp which is as high as the chart goes. Going to their impeller chart 450hp is 5000rpm for the AA. I would think flow would be proportional to hp absorbed and an A absorbs 1200hp at 7000rpm according to the same AT chart so I think that would put your scenario well above 5000gpm.

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    21 Daytona Outlaw's Avatar
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    Quote Originally Posted by Sleeper CP View Post
    Can you believe it........

    S CP
    LOL
    Looking forward to seeing this info,
    #55

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    Senior Member WMorton's Avatar
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    What? Do you have to empty a pond or something? Trying to figure out how fast you could get it done by using your boat instead of a pump?

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    Senior Member wolfie's Avatar
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    Must be planning on draining his pool.

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    Funny this post should come up. I've been thinking about how hook up a magnetic flow meter to a pump lately. I know it's been talked about before. It would be cool to see performance spec's between mfg, and detail work on parts. It would be easy to get flow readings, it would be harder to simulate the intake charge pressure on a test stand.
    Just a thought. Be safe, schick
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    Quote Originally Posted by schick View Post
    Funny this post should come up. I've been thinking about how hook up a magnetic flow meter to a pump lately. I know it's been talked about before. It would be cool to see performance spec's between mfg, and detail work on parts. It would be easy to get flow readings, it would be harder to simulate the intake charge pressure on a test stand.
    Just a thought. Be safe, schick
    A simple pitot pressure tube at the nozzle exit would easily allow you to gage changes, which is really what I think you're after. Higher pressure = higher mass flow & velocity for a fixed exit diameter. But it's not linear. You could generate a mathematical equation if you want to equate pitot pressure to velocity (and thus mass flow). Pitot tube speedo's do this mechanically. Which is an easy way to get this data.....

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    Quote Originally Posted by mpkardell View Post
    A simple pitot pressure tube at the nozzle exit would easily allow you to gage changes, which is really what I think you're after. Higher pressure = higher mass flow & velocity for a fixed exit diameter. But it's not linear. You could generate a mathematical equation if you want to equate pitot pressure to velocity (and thus mass flow). Pitot tube speedo's do this mechanically. Which is an easy way to get this data.....
    Thanks for the info, but I'm talking a test stand, not attached to a boat, the water would be coming from a tank.
    Don't mean to jack the thread, be safe. schick
    Half the people in the world are below average.

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    Senior Member GRoper's Avatar
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    Quote Originally Posted by WMorton View Post
    What? Do you have to empty a pond or something? Trying to figure out how fast you could get it done by using your boat instead of a pump?
    I've always wanted to try that.

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    Senior Member bp298's Avatar
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    Quote Originally Posted by mpkardell View Post
    A simple pitot pressure tube at the nozzle exit would easily allow you to gage changes, which is really what I think you're after. Higher pressure = higher mass flow & velocity for a fixed exit diameter. But it's not linear. You could generate a mathematical equation if you want to equate pitot pressure to velocity (and thus mass flow). Pitot tube speedo's do this mechanically. Which is an easy way to get this data.....
    true. if you know the pressure in a pipe, and the pipe's diameter, you can calculate mass flowrate. but to accurately calculate it, pressure at the smallest diameter (nozzle exit) must be used. since most pumps taper down from the bowl exit to the nozzle, pressure would change slightly as diameter decreases. pressure could be obtained with a pito, or just via a wall tap at the smallest diameter. i'd dig out the calc if i cared about flowrate, but i don't...

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