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Carbon tupes for free standing masts

Bernd Kohler All Messages By This Member #10027 I just finished a special version of the DUO 480 JIGSAW for Harald. You know he built (and some others too) a beautiful Cataproa. See video clip https://www.youtube.com/watch?v=2nGChrDX3tg ? Parallel rig or sloop was the critical point. In the end, it will be the parallel* rig. Because I found at last a manufacturer.? ? Brian in New Zealand built the first DUO 480 Jigsaw with the parallel* rig see video. https://www.youtube.com/watch?v=PiTbOKIuxlY&t=2s Because carbon masts are a lot cheaper there. Now, this company in the Netherlands makes just the good carbon tubes with an acceptable price of Euro 553.32). I will place the company address in the file folder of our forum.?? ? * many use biplane rig for a parallel rig. But does the rig have anything to do with a biplane?
Philip Malan All Messages By This Member #10031 Berndt? It looks great, I think it will be fast. Cheers Philip Malan On Monday, 18 December 2023 at 22:38:29 SAST, Bernd Kohler <ikarus342000@...> wrote: I just finished a special version of the DUO 480 JIGSAW for Harald. You know he built (and some others too) a beautiful Cataproa. See video clip https://www.youtube.com/watch?v=2nGChrDX3tg ? Parallel rig or sloop was the critical point. In the end, it will be the parallel* rig. Because I found at last a manufacturer.? ? Brian in New Zealand built the first DUO 480 Jigsaw with the parallel* rig see video. https://www.youtube.com/watch?v=PiTbOKIuxlY&t=2s Because carbon masts are a lot cheaper there. Now, this company in the Netherlands makes just the good carbon tubes with an acceptable price of Euro 553.32). I will place the company address in the file folder of our forum.?? ? * many use biplane rig for a parallel rig. But does the rig have anything to do with a biplane?
bryanandmarycox All Messages By This Member #10044 Hi all I'm enjoying reading all the messages of which we have had a sudden influx in the past week or so. It's always interesting getting to understand the rationale of builders as they embark on boat building projects, and I take my hat off to those who embark on larger projects. The KD860 has always been a favourite of mine so i was very interested to see the birth of the open version, and also to learn why one builder might choose it over the full bridge deck version. With the Duo 480 I will be? also very interested to see how Harald's open beam version works out. I think it will be very fast as it? should of course be much lighter than my regular version. It did occur to me, back when I was building my 480,? that I could turn it into an open beach cat type like we see above, and save a lot of time and money. But I went through the beach cat stage 40 years ago and was no longer interested in sailing with a wetsuit on all day, freezing to death half the time. Anyway I am looking forward to see the open version. Looks like twin rudders as of course with the aluminium cross beams it is not practical to have the central single rudder.? PS Bernd I believe Tomas's 480 was the first to have the twin rig even though it was a little different to mine happy Christmas everyone regards Bryan
Harald Niespor All Messages By This Member #10046 Hi all! I have just ordered the plywood to start the DUO 480 adventure before the end of 2023 :) At the moment I am thinking about the building of the carbon masts? at home. The company that Bernd found, sells really nice stuff, 6000 mm carbon masts at a good price, so I have to decide.... The idea of this special catamaran is to cruise around the danish island Fyn, put some food, red wine and beer into the hull, (the distance is around 140 nm) and sleep at the beach.? Happy Christmas, Harald
Bill Mansfield All Messages By This Member #10050 Something to think about...when looking to build carbon tubes Carbon sleeves? A mold (can be wood shaped to size) This company makes shrink wrap You lay the sleeves? Epoxy? Shrink wrap it heat it? There ate vids on this website to get you thinking? toggle quoted message Show quoted text On Thu, Dec 21, 2023, 7:24?AM Harald Niespor via <vitamedi62=[email protected]> wrote: Hi all! I have just ordered the plywood to start the DUO 480 adventure before the end of 2023 :) At the moment I am thinking about the building of the carbon masts? at home. The company that Bernd found, sells really nice stuff, 6000 mm carbon masts at a good price, so I have to decide.... The idea of this special catamaran is to cruise around the danish island Fyn, put some food, red wine and beer into the hull, (the distance is around 140 nm) and sleep at the beach.? Happy Christmas, Harald
Bill Mansfield All Messages By This Member #10051 toggle quoted message Show quoted text On Thu, Dec 21, 2023, 7:38?AM Bill Mansfield <billman3968@...> wrote: Something to think about...when looking to build carbon tubes Carbon sleeves? A mold (can be wood shaped to size) This company makes shrink wrap You lay the sleeves? Epoxy? Shrink wrap it heat it? There ate vids on this website to get you thinking? On Thu, Dec 21, 2023, 7:24?AM Harald Niespor via <vitamedi62=[email protected]> wrote: Hi all! I have just ordered the plywood to start the DUO 480 adventure before the end of 2023 :) At the moment I am thinking about the building of the carbon masts? at home. The company that Bernd found, sells really nice stuff, 6000 mm carbon masts at a good price, so I have to decide.... The idea of this special catamaran is to cruise around the danish island Fyn, put some food, red wine and beer into the hull, (the distance is around 140 nm) and sleep at the beach.? Happy Christmas, Harald
Bill Mansfield All Messages By This Member #10052 toggle quoted message Show quoted text On Thu, Dec 21, 2023, 7:38?AM Bill Mansfield <billman3968@...> wrote: On Thu, Dec 21, 2023, 7:38?AM Bill Mansfield <billman3968@...> wrote: Something to think about...when looking to build carbon tubes Carbon sleeves? A mold (can be wood shaped to size) This company makes shrink wrap You lay the sleeves? Epoxy? Shrink wrap it heat it? There ate vids on this website to get you thinking? On Thu, Dec 21, 2023, 7:24?AM Harald Niespor via <vitamedi62=[email protected]> wrote: Hi all! I have just ordered the plywood to start the DUO 480 adventure before the end of 2023 :) At the moment I am thinking about the building of the carbon masts? at home. The company that Bernd found, sells really nice stuff, 6000 mm carbon masts at a good price, so I have to decide.... The idea of this special catamaran is to cruise around the danish island Fyn, put some food, red wine and beer into the hull, (the distance is around 140 nm) and sleep at the beach.? Happy Christmas, Harald
Bill Mansfield All Messages By This Member #10057 For my ply selection, what do you think about:? BRUYNZEEL MARINE GRADE PLYWOOD Thats the US source? toggle quoted message Show quoted text On Mon, Dec 18, 2023, 3:38?PM Bernd Kohler <ikarus342000@...> wrote: I just finished a special version of the DUO 480 JIGSAW for Harald. You know he built (and some others too) a beautiful Cataproa. See video clip ? Parallel rig or sloop was the critical point. In the end, it will be the parallel* rig. Because I found at last a manufacturer.? ? Brian in New Zealand built the first DUO 480 Jigsaw with the parallel* rig see video. Because carbon masts are a lot cheaper there. Now, this company in the Netherlands makes just the good carbon tubes with an acceptable price of Euro 553.32). I will place the company address in the file folder of our forum.?? ? * many use biplane rig for a parallel rig. But does the rig have anything to do with a biplane? PerspecOK.jpg
Alain Dupuis All Messages By This Member #10059 30 years ago I was involved in the manufacturing of pressure vessel made out of fiberglass and epoxy. We used a filament winder with a stainless steel mandrel. With zero draft angle over several meter it is extremely difficult to get the part out. The boss of company invented a process to remove the vessel from the mandrel using a high pressure water pump. A short PVC sleeve what added at one end with a fixture to set the water hose. The pulse frequency and pressure was adjusted to create a small gap where water will sip though and the vessel will start to slide over the mandrel. By keeping the pressure and frequency, the vessel was getting out all the way with no stress and no drag mark on the equipment and parts.?

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