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#11
09-05-2012, 06:34 PM
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My 3/4 " thru hull is 90 degree also but I will take a good look & see if a 1 1/8" straight fitting will clear the protruding threaded tip of the stern lift eye inside the transom compartment & the legs/bolts of the new GEM lift-up cleats I just installed .
Having said that there is a pretty good strong flow out of the existing set up with the 3/4" 90 degree but I would imagine it will be a lot better with straight 1 1/8" fittings. 
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#12
09-09-2012, 06:25 PM
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I run 2 pumps both with float switches. One is an 800 ghp (hot to float, manual on-off connected to my starting batt. The other is a 1200gph with the float switch mounted half way up the stringer connected hot to my house battery.
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#13
09-09-2012, 07:56 PM
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Would two 2000 gph pumps be overkill for an 18Sf ? I'm thinking that smaller boats go down faster than bigger boats because of water volume to size ratio & thought the quicker the water is pumped out , the better. Someone also stated that the general rule is for every foot of boat lenght you should be able to pump 100gph.
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#14
09-09-2012, 08:38 PM
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guarantee you you'll have more gph per foot than anybody. but run'em regularly just to know they work.
do a search to check out mitchman's viddy to see how fast they can go down.
__________________
there's no such thing as normal anymore...
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#15
09-09-2012, 09:47 PM
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Does anyone have any experience with Ultra pump switches from USS (Ultra Safety Systems) ? The owner/developer of the switches is very helpful with info/advice , seems very confident in his product & offers a lifetime warranty. Not cheap but money well spent if they are as reliable & dependable as he claims they are.
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