Allsawedup. Nice video very common problem. Choosing not to replace the pour in foam with pour in foam was perfect. It would just end up soaking up water again. All two part foams will soak up water. They are listed as closed cell but they break down. Freeze thaw is really hard on it. They are coast guard approved but coast guard does not test for long term exposure to water. The stuff should be banned. If you look at the data sheets for pour in form they will tell you it will absorb water over time. Your choice of pool noodles is sound as far as material goes. They are polyethylene and are chemically resistant and basically waterproof long term . Polyethylene is coast guard approved. check out "Life Proof " boats in Bellingham. They use polyethylene. The noodles should last a VERY long time. Coast guard only requires flotation in boats 20 feet and under. the flotation is only required to keep the hull at the surface, not sink. the requirement includes motors, people, etc.... The coast guard provides factors to calculate the correct amount of flotation needed. Say your hull weighs 1500 lbs. You dont need 1500 pounds of flotation. The aluminum displaces water and the factor is .63. So .63 times 1500 is 945 lbs. Thats how much flotation you need to keep just the hull from sinking. The only problem with noodles is volume of material. Rough calculations will show that a solid core 2.5 inch diameter noodle will only displace .68 cubic feet of water per cubic foot. the pour in would do 100% assuming all voids filled. A hollow core noodle will only do about .57 cubic feet and in both cases figures can change based on shape of the void. Exception. They do make solid octagonal noodles, you would be able to get far closer to filling a void completely with them. I dont know the density of the noodle material but given your weight of 8 pounds, if it is 1 pound per cubic foot that thats 8 cubic feet of displacement or 496 pounds. Clearly not enough to float your boat. But lets double the amount of noodles to approximate what you took out. that about 1000 lbs. But still far below whats required to keep everything at the surface. Dont know how big your boat is but its likely it never had enough foam to float it. My 87 Duckworth, though required to, did not have enough. I took at at least 300 lbs of wet foam though I didnt weigh it. I calculated replacement volume and pretty sure there wasn't enough foam.
That’s crazy. I bet there was another extra 100lbs of water that come out of the foam as you were ripping it apart as well. I’m about to do this to my 1650 Lund renegade. Currently I got a 60/40 merc jet on it and it has a hole shot of 15second lol. so I figure it’s for sure waterlogged.
Thanks for taking the time to do this. I ended up walking away from an aluminum Blue Watee because if foam uncertainty. Glad I did now.
Allsawedup. Nice video very common problem. Choosing not to replace the pour in foam with pour in foam was perfect. It would just end up soaking up water again. All two part foams will soak up water. They are listed as closed cell but they break down. Freeze thaw is really hard on it. They are coast guard approved but coast guard does not test for long term exposure to water. The stuff should be banned. If you look at the data sheets for pour in form they will tell you it will absorb water over time.
Your choice of pool noodles is sound as far as material goes. They are polyethylene and are chemically resistant and basically waterproof long term . Polyethylene is coast guard approved. check out "Life Proof " boats in Bellingham. They use polyethylene. The noodles should last a VERY long time.
Coast guard only requires flotation in boats 20 feet and under. the flotation is only required to keep the hull at the surface, not sink. the requirement includes motors, people, etc.... The coast guard provides factors to calculate the correct amount of flotation needed. Say your hull weighs 1500 lbs. You dont need 1500 pounds of flotation. The aluminum displaces water and the factor is .63. So .63 times 1500 is 945 lbs. Thats how much flotation you need to keep just the hull from sinking.
The only problem with noodles is volume of material. Rough calculations will show that a solid core 2.5 inch diameter noodle will only displace .68 cubic feet of water per cubic foot. the pour in would do 100% assuming all voids filled. A hollow core noodle will only do about .57 cubic feet and in both cases figures can change based on shape of the void.
Exception. They do make solid octagonal noodles, you would be able to get far closer to filling a void completely with them.
I dont know the density of the noodle material but given your weight of 8 pounds, if it is 1 pound per cubic foot that thats 8 cubic feet of displacement or 496 pounds. Clearly not enough to float your boat. But lets double the amount of noodles to approximate what you took out. that about 1000 lbs. But still far below whats required to keep everything at the surface.
Dont know how big your boat is but its likely it never had enough foam to float it.
My 87 Duckworth, though required to, did not have enough. I took at at least 300 lbs of wet foam though I didnt weigh it. I calculated replacement volume and pretty sure there wasn't enough foam.
Thanks for the info
thx. Very interesting video.Appreciate it.
Got same issue with my boat .Love the noodle fix +)
Look forward to a performance update
How about an update on how you like the Scott impeller? I’m currently in the middle of a 1993 jetcraft rebuild! Rich
this was a cool vid cool idea
That’s crazy. I bet there was another extra 100lbs of water that come out of the foam as you were ripping it apart as well. I’m about to do this to my 1650 Lund renegade. Currently I got a 60/40 merc jet on it and it has a hole shot of 15second lol. so I figure it’s for sure waterlogged.
It floated higher
How much did all that old foam weigh? You never say. Dude! HaHa....
How did the pool noodles work? Would you recommend???