View Full Version : BALLAST SETUPS, tsunami, rule pump test

12-24-2009, 09:12 PM
ANOTHER GREAT BALLAST THREAD IS TAZZ'S https://forum.moomba.com/showthread.php?t=8985

Started with a little bench testing the factory system

this system put out about 6.6 gpm or would take about 7.5 minutes to fill a 400lb bag up, or about 15 minutes to fill a 750lb bag.

then there is another 400 lb bag waiting to be filled so what is that like a half hour to fill everything up.

I just dont have the patience for this

12-24-2009, 09:21 PM
next up using the factory pump with 1" hose and no valves
my garden hose could not keep up with it so i had to fill up a big bag and use that as my lake. this was running at about 19.3 gpm or would take just under 3 minutes to fill a 400lb bag up. and figure it would take just under 5 minutes to fill a 750lb bag.

next up -using 2 800 gph tsunami pups tee'ing off a single intake--this is using all 3/4" hose.
Edit: this is putting out about 15gpm for both filling into the same bag--figure each pump at about 7.5gpm

final test

this is 2 800gph tsunamis fill into one 1" hose, this was running about 12.5 gpm or would take about 3.3 minutes to fill the 400lb bag.

12-24-2009, 09:26 PM
now some trial fitting
factory pump inplace and seeing how a new intake with 2 pumps fit on the drivers side of the vdrive

seeing how the other pumps will fit on the other side of the v drive

12-24-2009, 09:29 PM
hole for new intake on the drivers side

hole for new intake on the passenger side

sticking the thru hull in to see how it fits
much easier to stick in from inside the boat for this trial fit--this is what the under side of the thru hull looks like

12-24-2009, 09:33 PM
drivers side thru hull coming up and in
just have to put the nut on and let it sit for a couple weeks and let the sealant dry

passenger side thru hull coming up and in

more pictures to come....

12-24-2009, 09:41 PM
how this is all working,

The original factory rule pump is filling my surf bag 750 lb.

2 of the tsunami pumps will be filling the front locker bag and the bag under the passenger seat where the cooler used to be.

the other 2 tsunami pumps that are going into a single hose will also be used for filling the surf bag thru the vent port-these are on a seperate switch and the hose will have a quick disconnect if the bag needs burbing.

hope it all works.

12-25-2009, 10:08 AM
I am surprised to see that the two pumps going into 1" hose went faster than the two 3/4" hoses. I would have assumed that putting two outputs into one would have created some backpressure or turbulence to make it sub-optimal. Say, did you think to do the 2nd-last experiment with two 1" hoses instead of 3/4"?

Ian you were correct about the flow-I made a edit to it. I was just using all the hose that I had-didnt want to go out and buy more.

I may do away with the 2 pumps into the one hose, but since i had them figured i would give it a try-once i can do a actuall lake test i may give a try with just one pump and one hose-it will be very easy to try

12-25-2009, 10:12 AM
What intakes are you using thru the hull and are they 3/4" or 1" inside diameter? Is the factory intake 1" inside diameter? Reason I ask is that you mentioned factory pump with 1" diameter hose...wasn't sure if you were referring to inside or outside diameter.

Using all 3/4 " inside diameter thru hulls-much easier for the pumps to screw into it that way. Using 1" would require adapters for all the pump intakes.

The factory pump uses a 3/4" inside thru hull and then the output hose is 1" inside diameter. -strange, but again i am just reusing as much as possible and try and shorten the fill time.