Expanding foam??????
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That's a good way to look at it Dave!Grand River Marine Modellers
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Arthur Taddei
If Foam is the worst thing for real boats, why is it then that almost every boat manufacture use foam core hulls above the water line.
Now since about the year 2000 some of the most popular boats in the world are made with totally Foam core Hulls(even below the water line)??? Searay for one.
LarryPast NAMBA- P Mono -1 Mile Race Record holder
Past NAMBA- P Sport -1 Mile Race Record holder
Bump & Grind Racing Props -We Like Em Smooth & WetComment
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Interesting point Larry.Grand River Marine Modellers
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Arthur Taddei
If Foam is the worst thing for real boats, why is it then that almost every boat manufacture use foam core hulls above the water line.
Now since about the year 2000 some of the most popular boats in the world are made with totally Foam core Hulls(even below the water line)??? Searay for one.
LarryNZMPBA 2013, 2016 Open Electric Champion. NZMPBA 2016 P Offshore Champion.
2016 SUHA Q Sport Hydro Hi Points Champion.
BOPMPBC Open Mono, Open Electric Champion.Comment
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Evidently this guy knows nothing about the foam that is suitable for floatation in boats. Obviously he's referring to spray stuff in a can. Great stuff, not a good idea to use that stuff but the two part foam works well. It cures due to a chemical reaction vs great stiff cures when it hits air and in a large amount the center doesn't cure as fast as the outer does. That's what causes problems. If you know how to use foam, and use the correct foam for the application, it works well. But I think this new guy, boatsrus must know everything and he's here to tell everyone else that they don't have a clue what they are doing, so we should just listen to him. He has a very compelling argument. I'm going to Walmart right now to get a few beach balls and put them in my boats as floatation. What a great idea!
Lol32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) wasComment
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Boston Whaler used two part polyurethane foam for decades. It's why their boat don't sink even if they break in half. They used to advertise their boats floating chopped in half. Polyurethane foam is closed cell and doesn't retain water. That's why it's sold as flotation. The Greatstuff doesn't cure properly more often than not and will retain water.
I've used it the 2 part poly and usually don't now. I've had the expansion contraction thing destroy 3 boats. This isn't a rumor. I still own two boats with the bag of nickles deck. I don't hate it or anything. I just am not filling any cavities with it.
John (Doby) has won at least one national championship if I remember correctly so yeah that kinda does give him the right to have an opinion.
Why has this come up again? Weird.Noisy personComment
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Please keep it on the surface fellas.MODEL BOAT RACER
IMPBA President
District 13 Director 2011- present
IMPBA National Records Director 2009-2019
IMPBA 19887L CD
NAMBA 1169Comment
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Are we learning anything more on this thread? I cannot believe that the mods are not cleaning some of these posts up (Short Bus...) and is especially sad that if I post a positive comment to the point on a For Sale thread it gets deleted right away...even if I know the person that posted the For Sale thread in the first place!! REALLY??!!!
This thread is doing nothing more than creating conflict.
Maybe an All Topic argument Section should be started...Comment
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Doug...looks like you just beat me to my post...Comment
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MODEL BOAT RACER
IMPBA President
District 13 Director 2011- present
IMPBA National Records Director 2009-2019
IMPBA 19887L CD
NAMBA 1169Comment
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Years ago we put 2 part foam above the water line to meet USCG level flotation hull requirements. Cheapest way I guess versus building in air chambers. Over the years I have repaired numerous hulls (full size) that used "closed cell" foams under the floors. With vibration and shock from hitting waves that foam became like a sponge gathering water in now open cells and was impossible to dry out. I used to foam the bow portions of my model boats and the result was the same. I pulled foam out of a 43" cat and weighed it at almost two pounds. Pool noodles work well and you can glue in ping pong balls to save weight and allow airflow to dry out your hull. Closed cells don't stay closed with vibration and shock waves from hitting waves, bouys and even rough water. I don't use pour foam anymore.
Mic
Mic Halbrehder
IMPBA 8656
NAMBA 1414Comment
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