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Old 06-20-2013
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Re: Pumps do not do what you think

Quote:
Originally Posted by vtsailguy View Post
So I did some real world tests and calculations on my pumps.

Four pumps will net me about 160GPH

A one inch hole lets in 2,400GPH

Nowhere near enough for even a relatively small hole. Basically all pumps are useful for is open windows and children's dribble?

I made a video, the math is at the end, can this be right?

That Sinking Feeling | Sailing With Kids
Out of curiosity, how long are your hose runs? Are there any back flow prevention valves on these hoses? Is the hose diameter sufficient throughout the run of the hose? How old are your pumps? How high do your pumps have to pump? Have you verified that the vanes of the pumps are clean?
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