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Old 18-07-2010, 09:07   #16
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Those flow rates are going to change as the boat fills up with water. Once it is full the flow rate will be zero. If you have a foot of water in the boat you now have to use the two foot equation and so on and so on.

Dan
I don't know.
If you have a foot of water in the boat then the boat is a foot deeper in the water and the hole is deeper also.
Too much math for me though.
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Old 18-07-2010, 10:10   #17
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I don't know.
If you have a foot of water in the boat then the boat is a foot deeper in the water and the hole is deeper also.
Too much math for me though.
I do not think that one foot of water is going to weight enough to lower the boat one more foot. If you had your boat in the water and added 1' of water to it would it go down 1'? Hole in a bucket in the pool, You still have to push down on the bucket to keep it under water at quarter full.

Dan
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Old 18-07-2010, 10:21   #18
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I do not think that one foot of water is going to weight enough to lower the boat one more foot. If you had your boat in the water and added 1' of water to it would it go down 1'? Hole in a bucket in the pool, You still have to push down on the bucket to keep it under water at quarter full.

Dan

Like I said, I don't know.

I can come over with a 2" drill and a tape measure and use your boat.

Mine won't work as it is a cat with flotation chambers and all.
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Old 18-07-2010, 10:29   #19
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Like I said, I don't know.

I can come over with a 2" drill and a tape measure and use your boat.

Mine won't work as it is a cat with flotation chambers and all.
Sure but bring some duct tape for when we get done.

Dan
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Old 18-07-2010, 10:36   #20
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Thread hijack Alert!

Dan, whats that airplane in your avatar? Looks Piper-ish, but awfully low to the ground...
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Old 18-07-2010, 11:41   #21
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I have a 1 1/2 in jabsco impeller pump driven by the crankshaft pulley on my 120 lehman. It has it's own mechanical clutch that you engage by hand. The pump is primed by the fresh water system, I have never had to rebuild this pump in 6000hrs of cruising (except for new impellers every 2 yrs). Pump was installed when the boat was commissioned in 1978. Takes up very little room and since the hoses are hooked up all the time it is immeaditly available if the main eng is running. If time is of the essence this in my opinion is the way to go.
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Old 18-07-2010, 16:48   #22
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Fire pumps

How about a diesel "Fire Pump" like this?

SPITFIRE 1.5" DIESEL FIRE FIGHTING WATER TRANSFER PUMP - eBay, Pumps, Tools, Home. (end time 08-Aug-10 09:03:41 AEST)

24000L/hour.. and about USD400...
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Old 18-07-2010, 17:49   #23
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Dan, whats that airplane in your avatar? Looks Piper-ish, but awfully low to the ground...
That's a Bellanca Viking. 180 kts retractable. Scoots right along. I am going from one of the fastest forms of transportation to one of the slowest.

Dan
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Old 18-07-2010, 18:38   #24
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That's a Bellanca Viking. 180 kts retractable. Scoots right along. I am going from one of the fastest forms of transportation to one of the slowest.

Dan

D'Oh! Of course. Wood wing, fast airplane. I used to wash a TV star's when I was a kid....
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