はじめに
Rotationally molded kayaks, like the garbage cans that are also made this way, tend to get brittle and crack after being left in the sun too long. Sharp curves may split.
Two common sticky substances from the hardware store can make a permanent repair.
必要な工具と部品
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"Great Stuff" is rigid foam in a can. It will expand and cause distortion of closed spaces as it expands, but, given one wide-open surface, it will cure to form a fairly rigid mass. It adheres to almost anything that is clean and roughened to help it grip.
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"Through The Roof" is a petroleum-solvent based product made for patching roofs. Sticks to anything, even tar on the roof. Fumes are terrible. Work in an area with good ventilation. It resembles "Shoe Goo", but costs a lot less per oz and dispenses easily from a caulking gun. A gooey liquid at first, it then gets rubbery, finally gets tough.
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Scrub near the split with coarse sandpaper to give the foam better adhesion. Use a stick to reach deep into the kayak if necessary.
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Use ropes and straps to bend the kayak back into shape and force the edges of the split together. Maybe use a correctly shaped form on the outside under the ropes/straps if it distorts. Use plastic sheeting under the ropes and straps along the split to keep any foam that leaks out through the crack from adhering to the ropes or straps.
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Prop the boat up so the Great Stuff will fall from the can's spout onto the part inside the hull where you want it to go. Do this in a location where you can leave the boat for a few days to be sure the foam has a chance to fully cure.
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Empty one or more cans of Great Stuff ($3 each on sale at Ace) into the boat. One picture shows the location of this particular repair (port side, behind the seat), the other shows what the foam looks like after it solidified. Yes, it's ugly. But if you try to smooth out the foam before it sets up it collapses the foam and it is still ugly.
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After a few days, put the boat back down on the ground and take off the ropes and straps. The foam will hold the split together. The can says that the foam should be painted, but years of experience suggests painting is unnecessary.
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Avoid getting the sticky stuff in the eyes!!!!!
"Fair winds and following seas!"
Avoid getting the sticky stuff in the eyes!!!!!
"Fair winds and following seas!"
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7 件のコメント
There is actually a product for repairing these correctly. Expandable foam is just a more horrible repair later. Take a look at Gougeon Bros WEST System G/Flex epoxy, found here:
The G/Flex Epoxy is impressive, although I'm not sure how well it would work on brittle plastic. In my experience, sun-weakened plastic that falls apart by on its own holds together when bonded to foam. With G/Flex alone, my kayak would shatter if dropped on its "sunburned" side.
Also, G/Flex is expensive. The kayak in the video looks to me like it has $50-worth of the stuff on it. The kayak repair I did cost $5 for foam and about $1 worth of a $12 tube of roof goo, the rest of which I used on a roof. For a new boat, G/Flex would be worth it. My boat was a basket case I rescued from a dumpster.
Just no just !&&* no just buy a used kayak or fiberglass it that wont last 2 yeArs tops
Expandable foam is extremely carcinogenic. I would not recommend this.
if the plastic is sun damaged a new crack will be just be a matter of time, and if out on the water that would be very dangerous. This is good time to say good bye and recycle it. If the kayak is NOT sun damaged it can be repaired correctly, but not this way.
