How did you learn so much about designing a boat like this, building it and then about how to properly install carbon fiber? Also, is this your first build?
Kevin and I have academic grad of Masters of Science in Engineering. We possess technical knowledge in the fields of construction, design, materials science, engineering calculations and management. Additionally, Kevin has been racing in regattas since he was a child and has won many of them. Although I worked in a completely different industry with world top biggest companies, than yacht building, sailing, designing, and rebuilding yachts has been one of my hobbies. I also briefly worked for a design office in the yachting industry. All of this forms a solid knowledge base needed for our project.
@@bojanu7212 That's very cool. I started sailing when my dad built me a little homemade sailboat before I started my schooling and before I knew how to swim. I started racing Naple Sabots when I was 8 and also joined a yacht club and started taking sailing lessons for about 10 years. I've raced many different boats but mostly small boats but my passion was racing catamarans. My biggest accomplishment was winning a major Tornado catamaran regatta that had well over 100 boats on the starting line. we got four first and one second place. Because of that, I qualified for the Olympics but couldn't afford to campaign because it takes a lot of money to travel the world attending all of the races and you have to have two boats. It's crazy expensive.
@@robertlaird6746 Wow, you accomplish a lot. It is a pity you couldn't continue your racing career. Stay in contact with us. I am sure we will need experienced sailors with a racing background.
@@bojanu7212 I'd love to go sailing with you but am about ready to build a Mumby Cyber 48 so that I can sail around the world like I'm sure that your going to do as well. By the way, I also lived aboard a 165 ft. two masted gaff rigged schooner called TeVega for 11 1/2 months. Now it's called DEVA. I hope that you continue sharing your adventures on RU-vid so that we can all watch. It's very possible that we will see each other in some anchorage in the future.
I've heard that anywhere the carbon fiber is exposed to the UV rays from the sun that it will delaminate. With that said, I would for sure paint the exterior of your boat and see what happens in the future with the inside sun reflections to the fibers. Did you base the design of CarbonBee off of a beach catamaran. I wish that there was more of a story about what went into the design. I'm also what the light ship weight will end up being.
Carbon fibres are immune to UV degradation, but the resin that holds it is exposed to UV degradation. The way to protect the carbon fibre laminate or glass fibre laminate is to cover it with the UV protective paint or to apply/add UV stabilisers to the resin. We use both methods. Outside we use white paint (additional effect is low temperature in the sun - black surface can reach over 70° C), inside where we use clear epoxy coating we add UV stabilisers. The answer on your other question: yes our design is similar to beach catamaran, because it has two hulls, mast, sails, ruder and is designed to be light, fast and giving a lot of fun. 😀.With these the similarity is ending. Some of the design parameters are in the description under the video, and at the end of video number 01.
Thank you for the comment. I agree AI narrator is little bit annoying, but speech recognition and translations for the subtitles on other languages are much better. Unfortunately, I noticed that my English pronunciation isn't sometimes good recognised.
I have to agree. It’s just too smooth. Too “nice”. Makes it sound like a sales video. The cool thing about self build videos is that they’re about real people putting huge amounts of time into making cool stuff. It’s about the people, not the video. The voice is a core part of the authentic story. Replacing it with a plastic voice makes the video much less interesting. It’s also a mismatch between the too “professional” voice and the not as smooth videography. If you hire a professional video team to film and edit, I’m sure they would succeed in making it cool, to fit the voice, but in your shoes I certainly wouldn’t want that, even if I was rich enough to afford it.
Thank you for the comment. AI narrator is maybe little annoying. I chose it because my English is not always properly recognised and in consequence the subtitle translation on other languages is completely incorrect. With AI narrator are the speech recognition and translations much better.
@@bojanu7212 Do you have the option to just do your own narration and upload the script as closed captions? I never found you difficult to understand at all but I understand that computers are bad at that.
Hallo Ihr Lieben, ich weiß, dass euer Ausbau sehr arbeitsintensiv ist, aber ich brenne schon ein neues Video von euch zu sehen, wann ist es endlich so weit? Alles Liebe für euch
Vielen Dank für deinen herzlichen Kommentar. Momentan gibt es viele Kleinarbeiten, und wir haben leider nicht viele Aufnahmen gemacht. Ich werde jedoch versuchen, in Kürze ein Video zu erstellen. Außerdem besteht die Möglichkeit, uns in Berlin zu besuchen 😀
Hallo, zuerst einmal großen Respekt an euch! Wirklich schönes und sehr inspirierendes Projekt. Meine Frage an euch wäre, wie ihr das alles gelernt habt und ob ihr eine Bootsbau Ausbildung gemacht habt oder ähnliches würde mich sehr interessieren. Würde mich echt über eine Antwort freuen. Grüße
Vielen Dank für deinen Kommentar. Wir freuen uns, dass dir unser Projekt gefällt. Deine Frage ist natürlich sehr berechtigt. Ein so komplexes Projekt, das vom Entwurf über alle Kalkulationen, die Technologiebestimmung und das Wissen über Hi-Tech-Baumaterialien reicht, kann man nicht ohne Erfahrung umsetzen. Trotzdem haben wir uns in vielen Aspekten auf „Neuland“ begeben, da unser Projekt untypisch ist und es in vielen Bereichen wenig oder gar keine Informationen zur Verfügung stehen. Kevin und ich sind beide Diplom-Ingenieure, und das Wissen, das wir haben, hat uns geholfen, das Projekt zu starten, Probleme zu lösen und den Bau zu realisieren. Außerdem ist (auch) mein Hobby das Entwerfen und Bauen von Booten. Ich habe einige kleinere Boote gebaut und restauriert. Kurzzeitig habe ich auch für ein Bootsbau-Konstruktionsbüro gearbeitet.
Schön, dass es dir unser Katamaran gefällt. Danke! Wir sind gerade dabei die Innenausstattung zu bauen und installieren (Sitze, Schränke, etc.). Es ist viel Kleinarbeiten. Zu deiner Frage wovon wir die Hauptmaterialien bekommen: meistens von R&G, HP-Textiles, Maricell.
Grandioses Projekt! Ich hoffe auf weitere Videos! Darf ich fragen, welche Materialstärken ihr für den Außenrumpf verwendet habt? Corematerial und Laminat. Ich repariere gerade eine alten Rennkat und interessiere mich für die Technologie... Grüße von der Ostsee...
Danke! Materialstärken welche wir verwenden kann man nicht so einfach für anderes Boot übernehmen. Es ist ziemlich komplexe Aufgabe, welche von vielen Faktoren abhängig ist. Bitte um Kontakt auf: bo_janu(at)yahoo.com.
Please post more! How did you get the structural requirements figured out? Is it also something you calculated in your CAD or did you outsource to a structural engineer? I'm interested as I design a cat
First, thanks for the comment. For the structural calculation I used SolidEdge which has well working FEA module. Without the correct calculation I would not advise to design such complex structures as multihulls. If you do not have experience in this matter I would advise that you design the general shape you like, and look for advise of known yacht designer, which has experience in multis, because it is not only the structural calculation and choosing of the correct material and its quantity , but also it's about of many air- and hydro-dynamic aspects around. Wish you success in realisation of your dreams. 👍
;-) ... yes, we betrachten this lunch as the technical lunch. The real reason is, we need to go in water, because we have the possibility to get the place in the big shipyard hall only from July to October. In winter all places there are rented for boats which had already longtime contracts for winter storage.
You need to work on your story telling skills I mean the video is good and you are talking about everything we need to hear but using the same information you can make it more interesting So basically if you look at the video when you doing voice over and you feel like you have nothing to say so, when we look it we see it the same way because the way you talking you make us view the video the same way as us If you dont like my criticism i will not give any but trust me i love your videos I was searching for it all over RU-vid i didn’t knw what keywords to use
Thank you for the comment. You are correct because most of the videos on RU-vid, which describe, for example, the building of a boat, are intended not only to showcase the construction of the boat itself but also the life of the builders. This is to make them quasi-influencers with the hope of earning money from clicks and advertising. The purpose we present in our building story is included in the description under the videos - please read. We aim to possibly provide short and informative content, focusing only on the main technical aspects of our project without delving into details which are commonly known and without details about ourselves and our lives,. During the build, and when capturing video material, we often have music in the background. This, unfortunately along with our voices, must be deleted. Otherwise, RU-vid doesn’t allow us to publish the video because the background music isn’t authorized. That's why I only comment on the videos and use another music background which is authorized. I also believe that pictures and videos convey more than the best comments.
@@bojanu7212 ok heare me out this is a whole yacht we are talking about so for months you will be doing repetitive work, i understand this, and this is the partu deed good you show us exactly the amount of details that is desirable without it getting booring, and you dont talk much in the videos you do voice over all of this is good So what i am saying instead of saying " urr just some more sanding" you coulxd make it interesting and just give some more details eg " so we are now sending the roof, and swe always have to wear our protective gear like i said before you dont want to breath this dust, my dad had been sending here for like 5 hrs straight, got lunch and he is back at it" I mean i dont knw if you understand what i am saying, im also an engineer and our brain is always telling us this is not important and in the end we are just left blank
Wielkie i szczegolne pozdrowienia dla Ani i Kevina. Wasze dokonania sa godne najwiekszego i najszczerszego podziwu!!! Wasza CarbonBee nabiera juz coraz bardziej realnych ksztaltow. Nie moge sie doczekac Wielkiego Wodowania!!! Dajcie mi znac kedy to przyzekam, ze sie stawie...
WSPANIAŁA ROBOTA!! Widac postepy prac. Zasubowalismy i bedziemy na bierzaco podziwiac postepy. Wytrwalosci w realizacji marzen oraz pozdrosy dla Ani, Bogusia i Kevina😉
Funny to find this, I've been building the same type of carbon fiber leg extension for two ePropulsion Pod 6.0. I was just laminating it yesterday! My usage is on a regular outboard electric hydraulic tilt/trim thing on my Seawind 1000. First I made the legs in steel for testing and now I'm redoing them in carbon fiber with an hydrofoil type of fairing around the flange where it attaches. The core is 3D printed ABS, with a carbon fiber epoxy cast foot, blending into a mix of unidirectional and plain weave on the skin.
More details, I didn't want to use the ePropulsion batteries because they (1) shut off automatically (2) are pretty heavy in terms of kWh/kg (3) don't support CAN to interact with my Victron GX setup and (4) didn't fit well in the space I had available. So I made a custom battery pack with CATL cells (280Ah) and an ORION BMS. I've been slowly reverse-engineering the code to make the ePropulsion motor controller turn on the regen, but I've stopped working on this recently because my solar production has been more than enough for my needs so far. I might go back to it later, or I might replace the ePropulsion controller with another motor controller that is more "open" to configuration. Or I might put a small ePropulsion battery "in the loop" just to turn on the regen. We'll see! I wish there was more options on the market! But electric propulsion, especially with retractable outboards/pods, is so amazing. I just love it. In addition, when the sun is shining and the battery are full, you start to use your engines in a different manner. There's literally no reason not to run an engine and go a bit faster when the sun is overflowing you batteries. So I end up motor-sailing even though I would otherwise be a sailing purist on a dino-juice boat.
@@AntoineGrondin Thank you for the info. I didn't buy the batteries yet. So, I have to consider that what you said. Sure we will have the solar panels too, but on my rough estimation it will not cover our needs. Still I wasn't busy enough with this theme, because I do have still a lot of other issues to solve.
@@bojanu7212 how much solar are you planning? I went above and beyond and shoved 2,280W overall on the coachroof top and over the arch, and we have a 10m catamaran. You should be able to put more, depending if you prioritize it or not. Mine is all over the dinghy, keeping it shaded and staying in the shades. But it's ~25kg per panel, not so light. Custom panels can be made that are lighter but I haven't gotten there yet, I just wanted a functional prototype with as much surface area used for solar as possible. I'm considering adding a lightweight diesel genset, like the Hatz 1B50 fiPMG, but this would require some creative designing for the air-flow to account for cooling and exhaust. But it's an incredibly lightweight direct-DC 48V generator that's compatible with Victron. Note that there's an exponential curve to power vs. speed. The curve looks best (to me) around 2-3kW of power, to motor at 4-4.5kts. This is a good mix for me of speed and power. I can do 3kts at 800W. Going fast, for long, with my engines isn't something I'm counting on. Sails are for that, otherwise we just need something to move a bit at a steady pace.
@deerfootnz To explain simple - displacement is (in ship building) understand as the volume of the water (or their weight) pushed out by the ship, and calculated to the construction water line. It is calculated as the weight of the ship and the weight of the cargo (here: the crew with all belongings, drinking water, fuel, eatables, etc). Weight of the boat is considered as it is empty.
@@deerfootnz Yes, correct. - Lightweight + Deadweight = Displacement. I use the "Weight" of the boat instead "Lightweight" because it is better to understand for most people and the translation in other languages is correct.
Thanks! CarbonBee is extreme light and has very low air and hydrostatic resistance, so we decided that 2x 6 kW electric motors are more than enough. Computer simulation show, we will reach 10-11 knots maximum speed easily... and under sails we can lower the engines and get enough current for Anna's demand 😄.
Thank you for re-uploading, video plays perfectly now 😎 Not much left to construct on CarbonBee it seems. Congratulations on Kevins engineering degree and Annas new knee also.
@@DenySmashinton CarbonBee is extreme light and has very low air and hydrostatic resistance, so we decided that 2x 6 kW electric motors are more than enough. Computer simulation show, we will reach 10-11 knots maximum speed easily. The propellers have 320 mm dia.
1st :) Beautiful boat! I hope that you come out with a video explaining all of the details like dry weight, measurements, cost of the materials to make the hull out of carbon fiber and all of that sort of stuff.
Thanks! A lot of the information are in the description under the video, and in my answers on the comments in previous videos. It is good idea. I will think in the future about one video which will answer the common questions.
@@bojanu7212 Yes, answering those questions in a video will really help out. I've gone through some of the questions and answers in some of the videos but it's difficult to do that. That's why I'm still asking about these things.
what is the mission of this boat because no toe rail and hatches at the bottom of your front facing window is just a couple of the things that are very confusing
@@bojanu7212 what is confusing? i asked what you're going to use your boat for? because building a carbon boat with no toe rails, and hatches at the bottom of the windscreen windows make absolutely no sense in my mind.
@@pred7949 We will use our boat mainly in marina. On the open see our autopilot will use the boat.🤣 Allegedly carbon boats doesn't need toe rails, but we anyhow install them 🙃😉😂. The hatches will be always closed, and we do not know anymore why we installed them. We will work hard at this to check the idea behind it. 😉🤔🤥🤕
This is an incredible project - just brilliant! I really like the construction method. I am considering using a similar process for a carbon fiber dinghy - similar to the OC Tenders. I consider either doing a hand layup with vacuum bagging or a resin infusion in a similar process to yours. My thoughts 1) build a support structure with horizonta woodenl supports, 2) gluing all of the foam panels together with thickened epoxy around a frame making it airtight while temporarily fixing the outer foam panels to the horizontal supports 3) put 4-6cm of unitdirectional along the edge of hull form to allow a place to tape and seal the vacuum bag 4) lay out the inner skin and position the carbon inner skin for infusion 5) seperate the the mold from the outer hull 6) layup and infuse the outer skin. How did you fix the foam foam panels to the horizontal wood strips? Did you fix the foam panels with a screw or temporary glue to the support frame and horizontal strips? How did you prevent the vacuum from pulling the foam panels out of position and moving inward? I think it is brilliant that you just deconstructed the form and reveresed it for the other side! Did you CNC cut the foam panel bulkheads prior to lamination? Congrats on your progress - I have been thrilled looking at this project and it has given me some inspiration. I would like to learn more about this process! Cheers
Thank you for appreciation. To be short to your questions: the foam was fixed with screws. There are two separate vacuum infusions for the hull: one for inner laminate and second for outer. The forms were CNC cut, but the bulkheads were cut using computer generated plot. All bulkheads, decks, etc, were cut millimetre exact, covered with carbon fibre cloth and vacuum infused with epoxy. Only some small edge-sanding in few places was necessary to fit it to the hull.
Interesting idea. Please provide more information about this amusing discovery. It would also be interesting for many designers if you could explain how large the wetted area of the boat should be in order the boat will be not prone to flipping.
