Foam vs. No foam |
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Jwbolton
Newbie Joined: September-15-2011 Location: Mid TN Status: Offline Points: 15 |
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Posted: September-15-2011 at 2:16pm |
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I was wondering what are the disadvantages of taking the foam out of the hull. And do you put anything in the cavities in place of the foam?
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'72 Mustang
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13514 |
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There have been a handful of discussions on this already. Have you tried using the search function?
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Jwbolton
Newbie Joined: September-15-2011 Location: Mid TN Status: Offline Points: 15 |
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Searched some more and found what i was looking for.
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'72 Mustang
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13514 |
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Cool. A domain restricted Google search can sometimes be handy.
Foam won right? |
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KRoundy
Platinum Member Joined: August-23-2010 Location: Lake Stevens Status: Offline Points: 1702 |
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What weight foam are you going to use? 2 lbs? 4 lbs?
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Previous: 1993 Electric Blue/Charcoal Ski Nautique
Current: 2016 Ski Nautique 200 Open Bow |
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Jwbolton
Newbie Joined: September-15-2011 Location: Mid TN Status: Offline Points: 15 |
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I definately like the idea of refoaming from the stand point of it came that way from the factory. And I also like the idea of pool noodles. Have not made a decision yet on what i'm going to use.
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'72 Mustang
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charger496
Senior Member Joined: August-06-2010 Location: atlanta, ga Status: Offline Points: 157 |
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+1 for pool noodles! They don't hold water, they each will float a 200lb person while he drinks his beer in comfort, and in the hull of a boat, they last a REALLY long time with no signs of breakdown. Mine have been fine under the floor of my boat for almost SIX whole months! And counting!
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21182 |
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I think its a given that if you choose not to refoam, then the structural rigidity that the foam provides (hull-foam-floor sandwich) should be replaced with something else. Most choose to glass in horizontal ribs.
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JoeinNY
Grand Poobah Joined: October-19-2005 Location: United States Status: Offline Points: 5698 |
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I would say it is a given in a 82+ SN, it is my choice but debateable in 70s hulls of all type.. but you get into the first gen fiberglass hulls where some where not foamed to begin with and well.. given would be a strong word. |
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DrCC
Grand Poobah Joined: April-12-2004 Location: at home Status: Offline Points: 2867 |
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I just think it would be funny to see the look on a prospective buyers face when you guys tell them:
"Oh yea, the hull is chuck full of pool noodles." |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21182 |
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Fair enough... at least the 1st gen (60's) hulls have been proven to be fine without the foam (and no additional support). Not sure we can say the same about the 70's hulls, as foam was standard by then. I guess I would strip the boat in question down to the bare hull and see how much it flexes under load before deciding that supports were unnecessary. |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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I agree and have a tendency to say the 70's hulls can take it without exra support. Regarding the pool noodles, I'll use one of Tims favorite terms: they are just too "fugly"!! |
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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It's not 'fugly'?
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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You are correct! I wish I had some typing skills!! I did edit the post!! |
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Jwbolton
Newbie Joined: September-15-2011 Location: Mid TN Status: Offline Points: 15 |
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If i end up using pool noodles, I will be putting in some ribs just for a little extra support for the floor.
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'72 Mustang
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KRoundy
Platinum Member Joined: August-23-2010 Location: Lake Stevens Status: Offline Points: 1702 |
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Hahahah.... |
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Previous: 1993 Electric Blue/Charcoal Ski Nautique
Current: 2016 Ski Nautique 200 Open Bow |
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charger496
Senior Member Joined: August-06-2010 Location: atlanta, ga Status: Offline Points: 157 |
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As much time and money as I have in this boat, selling it will NEEEEVER be an option!
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Nevergrew
Groupie Joined: March-22-2010 Location: Australia, NSW Status: Offline Points: 74 |
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From what I've read here since owning a SN, I reckon the foam causes more issues than what it's worth. I totally understand why it's there - positive flotation, structural integrity, sound absorption etc etc, but you only need a light nick in the floor skin and the thing starts filling up with water, with no where to escape.
I don't think there's ever been a 70's 80's or 90's hull manufactured in Oz that had foam under the floor - Lewy may correct me on that one though. Most hulls have 3 bungs on the transom, a centre for the bilge and two outers to drain the underfloors, if any water was to enter. Some wake boarding guys with older boats have rebuilt the floors to hold ballast water using a gel coating inside. I reckon if I ever need to redo the floors on mine I'd go no foam. That's my 2 cents anyway |
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peter1234
Grand Poobah Joined: February-03-2008 Location: United States Status: Offline Points: 2756 |
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i used pool noodles . i see particles once in a while so i assume either they break down in time or mice get in during the winter .
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former skylark owner now a formula but I cant let this place go
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Dried coyote urine in old nylons works wonders. Available at Ace. Some also use drier anti static sheets too. |
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GottaSki
Grand Poobah Joined: April-21-2005 Location: NE CT Status: Offline Points: 3362 |
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Clinch the sale, imo |
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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peter1234
Grand Poobah Joined: February-03-2008 Location: United States Status: Offline Points: 2756 |
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thanks pete yes i use drier sheets now in all the cars and the boat seems to work well . i have had a hard time getting the coyotes to go on my wifes nylons they seem to want to do something else to her leg.... yes she has nice legs
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former skylark owner now a formula but I cant let this place go
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MIskier
Senior Member Joined: July-29-2011 Location: Gulfcoast Status: Offline Points: 144 |
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There are some definite trade offs to be considered when re foaming a boat.
1) It does serve as to add some structural integrity to the boat, but these boats are overbuilt for the types of hull loads that they encounter. 2) Does help quiet the boat down while underway. 3) Most importantly is the added buoyancy that it gives the hull. When originally designed these boats had to be able to pass a level flotation test. Without the foam in the hull if there is a catastrophic breach of the hull your boat will not be able to survive fully swamped. |
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2006 MasterCraft PS 190
1986 CC Ski Nautique 2001 |
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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Lemme just say Is there a year range or cut-off point for the second part of # 1? |
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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FWIW-That topic has been beaten long past when the horse looked like a horse around here.
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MIskier
Senior Member Joined: July-29-2011 Location: Gulfcoast Status: Offline Points: 144 |
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Not really the boats have been built lighter over the years, but never to the point that hull loads would become an issue unless you enjoy regularly parking your boat on rock piles.
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2006 MasterCraft PS 190
1986 CC Ski Nautique 2001 |
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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You're talking CC's or boats in general?
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MIskier
Senior Member Joined: July-29-2011 Location: Gulfcoast Status: Offline Points: 144 |
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Correct Crafts, there are plenty of production boats out there that have had little structural calcs done on them. MC and CC though are way over built if you ever look at a lam schedule for one of them.
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2006 MasterCraft PS 190
1986 CC Ski Nautique 2001 |
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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I'd luv to see the lam schedule for an 88 BFN. How does one get that info? And don't say 'Ancient Chinese secret'.
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MIskier
Senior Member Joined: July-29-2011 Location: Gulfcoast Status: Offline Points: 144 |
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That is not something that you will be able to get a hold of, but if you pull out a thru-hull fitting you can see your hull thickness.
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2006 MasterCraft PS 190
1986 CC Ski Nautique 2001 |
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