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  1. #1
    Join Date
    Feb 2006
    Location
    Birmingham
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    1,166

    Default Ballast Timings and comparisons

    Thanks to Moombadaze for helping me out with a little flow test timing compilation. I was curious as to how all of our modifications stack up with our different methods of upgrading the stock ballast or building new systems. Surprisingly the results are not that drastic between the different methods. Some of the results were a lot lower than what I would have expected. You can use the chart to divide your total weight by 8.35 (Weight of a gallon of water) and then divide that by the GPM of each setup. If you are going to use a three Tsunami pumps to fill 3 450 pound bags, your fill time would be around 7.19 minutes, since the pumps can pump at 7.5 gpm to each bag the fill time will match the chart. These timings get a little more complex with the multi valve setup. From the chart you can see my newest setup can do 11.54 gpm through 1 valve filling a 450 in 4.67 minutes three minutes faster than a single Tsunami, but filling 3 450s through three valves will take 9.33 minutes which is 2 minutes slower than three single Tsunamis. With all that said, either method is better than the stock 20 plus minutes and the end result is less than two minutes of fill time.

    If you can do a test that is not listed above (Hint hint Ed with those Jabscos), please email me the test you performed, boat model and timings. These tests must be done through the full setup like Moombadaze has done not from just a pump dumping water. The GPM of a Tsunami 800 is 13.33 GPM at the head, but is 7.5 gpm through all of the hoses and fittings as in Stacy’s case. If you are already on the water, pull one of your bags fitting and time how long it takes to fill a 5 gallon bucket, you can use a 1 gallon bucket, but a 5 gallon one will give you a better average.

    My tests were done very similar to his, 5 gallon bucket pumped dry and timed. Time was divided by 5 to get the Gallon Per Minute (GPM) and the chart filled in appropriately.

    Also If I have made any mistakes with my Shade Tree calculations, please correct me where I have given invalid data. The data will be different for some models hose length and pump location are a HUGE factor. I still need to fill in a few boxes this weekend from the new valves with the old pump.

    So if you ask me which setup should you go with, my answer would be "It depends". In some cases each method is faster.

    Stock setups are highlighted in Yellow.


  2. #2
    Join Date
    Jul 2008
    Location
    Des Moines, IA
    Posts
    2,597

    Default

    Great idea! I'm working on my Tsunami 1200s w/ 1" lines install now and should have some data for you next week.

  3. #3
    Join Date
    Nov 2003
    Location
    Land O Lakes, Florida
    Posts
    5,867

    Default

    Nice work putting this together, Gotta say thanks to you Jesse as I never would have done bench timing test if you had not done it first.
    Hey, Its Moomba time

    13 Mobius LSV
    08 Mobius LSV-sold
    03 Mobius LSV-sold
    life is about finding the balance between being a responsible adult and staying young at heart

  4. #4
    Join Date
    Sep 2009
    Location
    Copperas Cove, TX
    Posts
    1,761

    Default

    Would like to see 3 800 pumps, 3 intake results with vented loop results; 3 800 pumps, 1 intake with vented loops. Also, are the stock sprinkler valves in the 08 GGIII system the 3/4" valves? Judging by the numbers looks like it would take well over 20 min to fill a center sac with two 750 rear sacs.

  5. #5
    Join Date
    Jul 2002
    Location
    London Ontario Canada
    Posts
    1,846

    Default

    Outstanding work. I hope to have some 09 numbers with an upgrade for ya in about 5 weeks....blah if the ice is gone
    09 21v LAUNCH

    run your engine after you change your oil
    68 th Member. WS420,HSE Revolution, OJ 466, Acme1157,1100 sacs,Kicker HLCD's n IX500.4, Supra Coolies
    Doug

  6. #6
    Join Date
    Jan 2010
    Location
    Portland, Oregon
    Posts
    273

    Default

    Thats really helpfull. I have the 2000 pump and the 3/4" orbit valves. So just by upgrading to the Irritrol 700 valves at 3/4" I can cut my fill time in half. Thats awsome! Thats like a $50.00 or $60.00 upgrade!
    2005 Moomba XLV, Polk db651 cabin speakers, 12" Kicker Comp, Bullet 6.5" hollow points in Arial Double cans, fosgate amps.

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  7. #7
    Join Date
    Feb 2006
    Location
    Birmingham
    Posts
    1,166

    Default

    Quote Originally Posted by stretch55 View Post
    Thats really helpfull. I have the 2000 pump and the 3/4" orbit valves. So just by upgrading to the Irritrol 700 valves at 3/4" I can cut my fill time in half. Thats awsome! Thats like a $50.00 or $60.00 upgrade!
    I am not sure if it would double. Your setup should be the same as moombadaze's old one. A 750 bag would go from a fill time just shy of 14 minutes to a fill time of just over 10 minutes. What all bags do you have?

  8. #8
    Join Date
    Jul 2009
    Location
    Northern California
    Posts
    129

    Default

    First off, nice chart.... well done.

    I am surprised the Tsunami 800 is only putting out 7.5 GPM, they are rated by Atwood for around 14 GPM. I know I am getting better then 7.5 GPM out of my 800's in my setup. With all three 800's running, drafting out of one 3/4" intake, I am getting about 9.5-10GPM per pump, close to 30GPM when running all of them. It takes me about 8-8.5 minutes to fill 1900 lbs of ballast which is about 228 gallons.

    Could you possibly get a little more flow from the water pressure coming in from the bottom of the boat when they are mounted well below the draft line??????
    2008 SUPRA Launch 22 SSV
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  9. #9
    Join Date
    Nov 2003
    Location
    Land O Lakes, Florida
    Posts
    5,867

    Default

    Fman, the gpm where takin at the end of the hose, not the outlet on the pump as it will make a big difference. I was suprised also but when I read the package it gave to different pgm for pump outlet and after only 3' of hose. The hose i was using is about 7' long--it was the factory length. Hope this helps
    Hey, Its Moomba time

    13 Mobius LSV
    08 Mobius LSV-sold
    03 Mobius LSV-sold
    life is about finding the balance between being a responsible adult and staying young at heart

  10. #10
    Join Date
    Feb 2006
    Location
    Birmingham
    Posts
    1,166

    Default

    Quote Originally Posted by Fman View Post
    First off, nice chart.... well done.

    I am surprised the Tsunami 800 is only putting out 7.5 GPM, they are rated by Atwood for around 14 GPM. I know I am getting better then 7.5 GPM out of my 800's in my setup. With all three 800's running, drafting out of one 3/4" intake, I am getting about 9.5-10GPM per pump, close to 30GPM when running all of them. It takes me about 8-8.5 minutes to fill 1900 lbs of ballast which is about 228 gallons.

    Could you possibly get a little more flow from the water pressure coming in from the bottom of the boat when they are mounted well below the draft line??????


    Unless my calculations are wrong if you divide yout total weight by 8.35 you get 227.54 gallons then divide that by the three pumps (assuming all bags are equal weight) you get 75.84 gallons for each pump then divide that by your faster fill time of 8 minutes and you get 9.48 GPM per pump if you use the slower time you get 8.92 GPM. It is a true statement that if you spread the GPM across all three pumps your setup can do 28.44 GPM or 26.76GPM. So in your setup you are seeing slightly better results if the timing you have posted is accurate. Could you verify your timings with a stopwatch or use the 5 gallon bucket method. I want to make sure that all timings were gatherd in a similar method.

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