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Thread: Air in Ballast Bags - 22 Mojo
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06-22-2022, 09:30 AM #11
I'm having my starboard side filling with id say 40% air every time, the port side has hardly no air in it at all.
Mentioned it being a problem when boat was in for service and basically got told to just open the valve as it filled...
So now every time I fill its wait for them to say full, then open the hatch and valve and put your feet on it to push air for 30 seconds then wait another 5 mins to fill it to actually full.
I have no idea if the front bag is getting air or not just hoping it isn't..
Also the water sensors are crap imo, I have to manually cycle the pumps over and over again until it finally puts water out the side on each bag. Water sensors always throw with plenty of room for more water I would much rather them just fill till the spray out the side. same with draining, have to sit in dead silence and try to listen to the change of sound when they are pumping water or not. If they simply sprayed out the side as well like older boats you can simply see when you are doneJosh
2021 Mojo, Sold 7/15/22
2023 Supreme S240, on order
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06-22-2022, 10:00 AM #12
Ya you can even build your own kit for a little cheaper on the wakemakers site. As far as why SC went to these fittings, if I had to guess it is to be able to have "subfloor" ballast. If they had vent hoses on the top of all of their bags then you would have trouble with clearances when using the rear tubs and maybe even problems with the hose getting stuck or pinched as the bag fills.
2019 Makai
Raptor 450 w/ 1.76 Trans
WakeMakers 1350s in the rear & 1K in Lead
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06-22-2022, 10:07 AM #13
Your comment about the front ballast bag having air in it has also been a concern that I have had. For that matter the subfloor midship bags as well. I am sure they have to be getting air. Why would they be any different from the rear? I periodically hit my fill switch for the front after running for a while until I see water come out the overflows. This is after I have filled it until water comes out from the first time. I figure those stock little vent caps just take a little while to work the air out.
Sent from my SM-G781V using Tapatalk2021 Moomba Makai
Black Cherry Metal Flake & Fire Red
Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
Wet Sounds bow speakers & 10's on the Tower & ported sub
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06-22-2022, 10:40 AM #14
I have had the same concern as you two. I have been brainstorming a solution for venting the midships like I have done my rears but it will involve putting a hole in the removable floor. The bow I haven't even looked at yet lol Like HFarr I am always topping my bags off throughout the day and making sure they overflow out the side. Then I just turn Autowake back on and let it do it's thing.
2019 Makai
Raptor 450 w/ 1.76 Trans
WakeMakers 1350s in the rear & 1K in Lead
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06-22-2022, 02:31 PM #15
Front def gets air in our Supra.
I’ve always vented ballast bags, even in the good old days so it doesn’t bother me to do it today.
I did install air vents on our rears but they didn’t work so I resorted back to manual venting.
As Josh said, it’s normal for me to fill with vents open (front and rear) and then fill for a few more mins after I vent.
I even randomly hit the switches while riding because as the water shifts, air pockets move as well.
Definitely a PIA but I’m used to it
Sent from my iPhone using Tapatalk
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06-22-2022, 04:44 PM #162021 Mojo, 6.2L Raptor 400/1.76, Acme 3407 15.5x13, G6, Flow3, +6500 lbs ballast
2005 Mobius LSV (sold)
Windermere Lake, B.C., 2800' Elevation
2021 Mojo Mods
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06-25-2022, 02:54 AM #17
My 20 Mojo doesn’t have any significant air in the front when filled. If there is any air in the mid ship tank it vents into the bow sack. The bow sack’s stock vent is in the perfect location up high at the nose of the boat. When I see water coming out the port I know the air has vented and the bag is full. It works really well, I would be surprised to find out this setup isn’t used on other models. FWIW I don’t have Autowake, if that has any influence on what set up SC uses for the bow ballast.
2020 Moomba Mojo
2008 Mastercraft Prostar 197 40th Anniversary
Owner Ness Lake Watersports
Wakemakers “Exact Fit” Bags + Lead = 4,700 ballast
Audio by Wetsounds, MTX, JL Audio, Clarion
15 X 13.00 ACME prop
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06-27-2022, 12:53 PM #18
Just to update the group, I went the same route as Schlanseay posted about above. This is what WakeMakers recommended as well. Stinks you've got to spend ~$100 extra to get something that should be there already or function as intended, but such is life.
Rear Ballast Vent Kit.jpg2022 Moomba Mojo
2013 Moomba Mojo 2.5 (sold)
Tow - 2019 Ford F150 Ecoboost
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06-28-2022, 10:14 AM #19
I have that setup on my bags and not only does it help keep air out on fill but it also drains better. I don't know the science behind why but my bags have never drained as completely as they do now after that upgrade.
2021 Moomba Makai
Minnesota
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06-28-2022, 11:38 AM #20