Sub floor ballast bags on Supras or Moombas

[larry_arizona]

Do your hulls end up stinking? When I used to pull ballast bags on my 18SA, the floor under the bags always had a wet slimy feel to them.

I would clean it up when I pulled the bags out.

Assuming the subfloor bags are not easily accessible to remove and clean??

Thinking it may just take some bilge cleaners and water swishing around while trailering then drain it.


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[sandm]

this is the whole reason I wish the trend was moving toward tanks, not bags.

my old supra 20ssv had a bag in the center ski locker that was part of the bottom hull. that thing was disgustingly gross at the end of every season. last 2 boats had hard tanks in the rear under the floor and never once had a smell nor had to clean them out.

[larry_arizona]

Always tried to figure out why the bags were wet and slimy? Assuming condensation?

As long as the subfloor bags sit on the hull, bilge cleaner and and water sloshing around whole trailering will do the trick.
I assume you can fit bags to hold more water than hard tanks.


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[Shoebox]

There is moderately easy access to the bag fittings, but removing and replacing them would be extremely difficult. That said, I've not noticed any real moisture under them. They're in a spot where water from people entering the boat won't really go near the bag compartments. I have life vests over the starboard bag compartment, and ropes, tools, rags, etc over the port bag compartment. That stuff is never wet. So unless the bag or fitting is leaking, there shouldn't be any water there.

[MJHSupra]

Assuming the subfloor bags are not easily accessible to remove and clean??

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Correct - they are not easy to pull out. I was playing around last fall on my SL and thought the locker floors might come off like the transmission hatch - 4 screws in the floor and a couple on the back seat - something easy. Nope. I was going to ask my dealer, but would always forget when I was there.

But when I was climbing around a 2021 SL, I think they mounted all six of the ballast pumps all in the center. Needed a flashlight that day.

[larry_arizona]

That would be sweet if the ballast pumps were even easier to service


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[jnr4817]

We have an 18 Mojo and love it. The bags are fine for above floor ballast. I would pay a bit more to have subfloor tanks, instead of bags. Then, if I felt like it, I could always add additional floor bags above the sub floor tanks. Especially if they were already plumbed for this purpose. It would be amazing.

[dakota4ce]

Tanks can crack. Bad bad bad situation. Bags are pulled and replaced using ropes.... and hold more because they conform to the compartment. Bags are better for a few reasons.

To clean under the belly bag, open front hatch, run some cleaner and hot water down there for a while....on a slope and out the back. Could likely do the same under side bags.


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[2in2out]

I assume you can fit bags to hold more water than hard tanks.

I think that hard tanks, even with baffles, would be difficult to contain shifting mass, or measure capacity with accuracy for Autowake. Plus I think cost factor is an additional reason. Bags allow for things like tubing, wiring, structural members, to be in place. In the perfect bag set-up, vacuum is necessary to remove all of the water from the bags, whereas a hard tank cannot collapse to evacuate the contents, and there would be likelihood for residual. Capacity would be lost engineering low points, baffles, through channels, etc. Plus cost!! And then, there is cost.

[larry_arizona]

To clean under the belly bag, open front hatch, run some cleaner and hot water down there for a while....on a slope and out the back. Could likely do the same under side bags.


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Thanks, this is exactly what I was hoping was accessible to thrown cleaner in there and drain


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[Shoebox]

Thanks, this is exactly what I was hoping was accessible to thrown cleaner in there and drain


Sent from my iPhone using TapatalkThen it's still wet, with the same issue. If you're going to the trouble to clean them, you may as well pull them so it can dry.

[larry_arizona]

Then it's still wet, with the same issue. If you're going to the trouble to clean them, you may as well pull them so it can dry.

lol, not if I have to pull the bags with ropes and reinstall them.


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[2in2out]

Run a ducted fan into the front hatch, open up the engine hatch. Open up all the seats, T-plug access, and trany cover. Let run for several days for your humidity. In my humidity, it only takes an afternoon.

[sandm]

Tanks can crack. Bad bad bad situation. Bags are pulled and replaced using ropes.... and hold more because they conform to the compartment. Bags are better for a few reasons.


both have pros and cons.
tanks can crack and iirc MC had a batch that did several years ago. same thing I have read about bag fittings not glued in properly or coming off. both are prone to issues. MB have used hard tanks since 2008 with no widespread cracking issues.

having had both and back to OP's original problem, bags have issues with gunk under them. tanks that I have had experience with do not.

best of both worlds- tanks subfloor and P&P on top.

[larry_arizona]

best of both worlds- tanks subfloor and P&P on top.

Damn it , Can I get my 2018 SA back??


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[Shoebox]

lol, not if I have to pull the bags with ropes and reinstall them.


Sent from my iPhone using TapatalkYou won't need ropes to pull them, but definitely some kind of snake to reinstall.

Run a ducted fan into the front hatch, open up the engine hatch. Open up all the seats, T-plug access, and trany cover. Let run for several days for your humidity. In my humidity, it only takes an afternoon.That still won't dry under the bags where they sit on the floor.

[dakota4ce]

both have pros and cons.
tanks can crack and iirc MC had a batch that did several years ago. same thing I have read about bag fittings not glued in properly or coming off. both are prone to issues. MB have used hard tanks since 2008 with no widespread cracking issues.

having had both and back to OP's original problem, bags have issues with gunk under them. tanks that I have had experience with do not.

best of both worlds- tanks subfloor and P&P on top.

MB uses cavities that are literally molded into the hull, then sealed. And they have had leaks, which have been a big problem when they happen. Rare, albeit.


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[larry_arizona]

You won't need ropes to pull them, but definitely some kind of snake to reinstall.
That still won't dry under the bags where they sit on the floor.

So what you are saying...... the subfloor bags are nothing to worry about.


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[Shoebox]

So what you are saying...... the subfloor bags are nothing to worry about.


Sent from my iPhone using TapatalkNot yet for me. [emoji2369]

[MJHSupra]

Thinking it may just take some bilge cleaners and water swishing around while trailering then drain it.


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I've had good luck using Dawn about 2-3x each summer. I keep a small bottle onboard b/c the kids like to slide on the inflatable mat.

Plus you will need Dawn for that new ChilTec vinyl.

I put some in the center access when heading back to the dock. Once on the trailer, I manually drain any access water in the ballast bags, pull t-drain, then head home.

Some company makes an orange smelling bilge cleaner. It works well, used it on my last Supra.

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[2in2out]

Some company makes an orange smelling bilge cleaner. It works well, used it on my last Supra.

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New product line for Hula? RC are you listening!

[sandm]

MB uses cavities that are literally molded into the hull, then sealed. And they have had leaks, which have been a big problem when they happen. Rare, albeit.


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same dif. I'd rather have them molded into the hull than hard tanks actually. more strength to stiffen the hull up. they are a unique ride on the water tho. if you haven't and get a chance, ride in one. VERY "tippy" boat and weight sensitive side to side if not ballasted up.

the final price for all that subfloor ballast tho is no nmma cert. no biggie for me but some care..

[dakota4ce]

same dif. I'd rather have them molded into the hull than hard tanks actually. more strength to stiffen the hull up. they are a unique ride on the water tho. if you haven't and get a chance, ride in one. VERY "tippy" boat and weight sensitive side to side if not ballasted up.

the final price for all that subfloor ballast tho is no nmma cert. no biggie for me but some care..

Owned a 2013 F24 for 2 years. Loved the ballast system. Mine did not leak thankfully.

Same diff as hard tanks in that leaks occur, and when they do they’re a huge PITA. That’s part of why everybody else is doing subfloor bags and hard tanks have kinda disappeared.


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[sandm]

bags are nice until you have to clean them. I'll take tanks at that point.. :)

the gate valves and that most are also running pnp are the only real downsides. kinda negates the 60second fill if you're waiting for pnp.

[Shoebox]

bags are nice until you have to clean them. I'll take tanks at that point.. :)

the gate valves and that most are also running pnp are the only real downsides. kinda negates the 60second fill if you're waiting for pnp.Yeah that's what's funny about Centurion's Ramfill. You have to be doing like 15mph to fill and empty them, and it's still only half the ballast. Takes just as long to fill the rest as it takes our g6 to fill everything.

[dakota4ce]

Yeah that's what's funny about Centurion's Ramfill. You have to be doing like 15mph to fill and empty them, and it's still only half the ballast. Takes just as long to fill the rest as it takes our g6 to fill everything.

That and even though there’s 5500# ballast, they don’t run all of it. Bow is rarely full, and offside is often less than full.


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[dakota4ce]

bags are nice until you have to clean them. I'll take tanks at that point.. :)

the gate valves and that most are also running pnp are the only real downsides. kinda negates the 60second fill if you're waiting for pnp.

Tanks are your jam!


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[sandm]

Yeah that's what's funny about Centurion's Ramfill. You have to be doing like 15mph to fill and empty them, and it's still only half the ballast. Takes just as long to fill the rest as it takes our g6 to fill everything.

but it has ramfill.... just sounds impressive......

[RC_Hinojosa]

New product line for Hula? RC are you listening![emoji1787]

<read as Ron Burgundy>



Does your boat smell like fish and algae covered vagina on a hot day?

Try our new Sac Wash[emoji3481]!!

....when was the last time you washed your Sac?

[emoji23]

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[jnr4817]

[emoji1787]

<read as Ron Burgundy>



Does your boat smell like fish and algae covered vagina on a hot day?

Try our new Sac Wash[emoji3481]!!

....when was the last time you washed your Sac?

[emoji23]

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You have won the Internet for today.

Thank you sir.

[2in2out]

[emoji1787]

<read as Ron Burgundy>



Does your boat smell like fish and algae covered vagina on a hot day?

Try our new Sac Wash[emoji3481]!!

....when was the last time you washed your Sac?

[emoji23]

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Nailed it!!

[larry_arizona]

[emoji1787]

<read as Ron Burgundy>



Does your boat smell like fish and algae covered vagina on a hot day?

Try our new Sac Wash[emoji3481]!!

....when was the last time you washed your Sac?

[emoji23]

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You need to propose that to Hula.

Hula sac wash.

Or better yet, RC’s sac wash


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[RC_Hinojosa]

You need to propose that to Hula.

Hula sac wash.

Or better yet, RC’s sac wash


Sent from my iPhone using TapatalkLegit gonna propose this, I'll talk to John L.

I'mma die if this greenlights [emoji1787]

I'll be Oprah. Everyone on the forum gets a bottle!



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[larry_arizona]

https://uploads.tapatalk-cdn.com/20201006/4decb1dea3c5e51ca6b01b4ee7da3c39.jpg


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[sandm]

sorry to burst your bubble but it's already been invented....

https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcTCtPT-1rwPySDDyw4MHpvpkE1PjMszjKC-Bek2SfwRgf0Xv0cmgHFTD2dYXAfshuI2Uw22TW8&usqp=CAc

[dakota4ce]

For those who wish hard tanks were still a thing...

https://uploads.tapatalk-cdn.com/20201007/ce373946fd89ab0868d733d6b4ce9ec0.jpg


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[larry_arizona]

That sucks!!!!

Bags it is, at least they are easier to replace.

Do any SC boats still have hard tanks?


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[sandm]

For those who wish hard tanks were still a thing...


they are still "a thing" with some companies using them for years with good results.

guessing example above is isolated as it would be all over this forum if it was more common. sucks for them that skiers is denying labor coverage. know they are not going to cover everything forever but this is an odd part to fail and skiers should step up from what I see initially. as they say tho there's always 3 sides to the story and not going to speculate on what the "real" story is between them and skiers.

[dakota4ce]

That sucks!!!!

Bags it is, at least they are easier to replace.

Do any SC boats still have hard tanks?


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Not that I am aware of. All the redesigns are bags.


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[Isaguel]

Isn't the center tank a hard tank? It was in my Mojo.

[MJHSupra]

Not that I am aware of. All the redesigns are bags.


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That’s what I thought too.

I recall talking with someone at SC and recall the topic of warranty or potential issues coming up. Thus no more hard tanks.


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[larry_arizona]

Isn't the center tank a hard tank? It was in my Mojo.

I am thinking the new mojo will have bags only.


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