Realistic or Dreaming?

Hi Boatdesign.net,

After endless hours on Delftship and Free!ship, I got near to a finished design until I stumbled across a download of what I wanted exactly. What luck. But after much thinking and researching, I've stumbled on a few flaws in my plans.

I got a vacuum pump handy from my previous HVAC project so infusion moulding is looking very attractive right now.

Please feel free to give me any advice pointers or correction if what I am saying is wrong or just out of this world impossible.

Am currently planning on making the boat hull deck and stringers all in one go with infusion moulding which is all possible from what I gathered provided I have the correct setup of a resin distribution system.

The mould is in 2 parts, with aligning holes to ensure they fit snugly with the correct alignment. However, this will leave a joining seem or line where the 2 moulds meet, depending on how refine the mould is the line can be tiny to something very noticeable. But with the correct application of PVA, this shouldn't occur right? But if I am wrong, and there is a line, how do I remove it from the finished hull without ruining the nice new shiny hull?

Am also trying to figure out where to place the stringers, is there any rule of thumb or is there some software that can help me with this?

The entire boat will be made with the use of core material precut. Any recommendation on the core material to use?

But the most important question that I just cant find the answer to or the right search term is... how much fiberglass to lay, and what type of fiberglass and in what combination and method. Obviously more at the stern and planning section, but the bow crashing through the wave concerns me too. The deck is the deck and only has to support a few people but, unfortunately I still cant figure out how much fiberglass is needed for the deck. Any help would be really appreciated here, or even just pointing me in the right direction to some articles.

This boat will be used in the ocean, mainly on calm days but the weather out here can change pretty quick so it can get fairly bumpy out there. The current intention is to install some fancy Volvo Penta IPS system, the weight distribution concerns me a little as the engine if mounted without a jack shaft will result in all the weight being at the stern. Each engine and drive unit is 780kg give or take so it is a fair bit of weight to consider and how much fiberglass I'll need to lay down for the hull and stringers to support the engine. But with the jack shaft I can place the engine further along the boat. Any recommendation on this matter?

Also just a last minute thought, designing a boat or getting a boat design is all well and dandy, but how do you determine and accurately find the horizontal plane of the deck when stationary in the ocean? But again that all has to do with the weight distribution.

But plenty more time to plan whilst I start making a CNC Router to start spitting out all those sections accurately.

Many thanks for the read and help in advance. Hope it wasn't too long or confusing to read.

 

Hay guys another newbei !! he comes from planet ????

You need to get you head into some boat design books to find all the information and the answers to the questions you just asked .
Glass could be what ever you want to use !! there a endless list of combinations and a great aray of materials you can use in differant combinations as well as cores ! need to do lot reading and getting to grips with what you can and cant use where and for what . Going yo be using carbon and kevlar and a little glass here and there all held together with ???
Anyone can draw a boat even the young guy i work with is pretty good but he hasnt got a clue about what makes it go and how good it will be in differant sea conditions !!
weight distribution and balance !! you could be makeing one of the most beautiful boat ( just like all the others) but it could be a absolute dog of a thing !
Resin infusion and making a cnc !!! wow what planet you from again??

 

All fair points, been trying to find some up to date books. No luck with infusion moulding though. Any recommendations?

As for the CNC Router, its one of the only machines am missing from my current workshop. Be handy to have one for future projects but also this one. DIY CNC Routers are relatively easy to make and cheap and it beats the hell out of hand drawing, tracing or printing scaled drawings and cutting hundreds of pieces of mdf by hand to form a mould.

 

Hi just thought id throw a brick at you and see what happended !! glassing is my thing but not infussion !! never had the call and cold never justify the exspence and the potentual failure possabilities of it!! Everything i do is hand laid and only use polyester or vinylester resins !! epoxys dont fit into my life style at all for any reason .
have worked in the marine and industrial glassing industrys for 25 years plus . have worked in a few countries and in China at this time .Race boats are my thing specially tunnel boats!! they are me !!. but i have a love of anything that floats big or small fast or slow ,have even been kmown to make a few sail boats as well .
I had just finished looking at a simular design as what you have drawn that is a aluminium boat and have been sorting information from the designer about making his boats in Glass and using the hyundai v6 diesel motor with a sterndrive . The motor is short , its light and 250 hp so has lots going for it !
infussion is not me but there are lots people that use it . and there is a section here where you could get a load of help if you push the right buttons !!
Bye

 

Thats soooo close to a Riva.

 

UMMMMMMMM Would it surprise you if I told you the file name was Riva+Aquarama.fbm... lol

It literally is... a Riva, am currently playing around and trying to change some aspects of it to look more like this pup though, which happens to also be a Riva with a touch of modernism...

http://www.designboom.com/weblog/cat/8/view/10568/marc-newson-limited-edition-aquariva.html

But I got a long way before that, need the theory first! Already started to plan out some fiberglassing experiments. New bonnet cover for a series 2A landrover with a sunken top for a spare wheel to sit in. A good way to test out some different fiberglass weaves and layer composites.

 

ummm - that's news to me. Some very clever people I know take months to build them and set them up, never under $au20,000. Programming them to work is also a major skill. I just hired the experts to do my cutting for me.

If you can direct me to 'cheap and easy' cnc, I would love to hear more.

 

Word of advise is look at and study all and every design that is close to what your wanting ,study the way they are set up study where everything is ,study the performances and the economics of it ,and when you done it all in your mind you have what you need all the good points and forget the not so good . close the file and close all the books and put up a blank page and draw your own boat . do you own thing !! dont be a follower be a leader !!
Always make the back of your boat beautiful because thats what people will see the most of .
I love speed and the joy of the wind in my hair , i have a little old boat built 1975 and as sound as a bell with a outboard motor thats way to big for it .
i am the only one that drives it i never open it wide out except when i am alone, it flys and trimmed out to where it likes to be its really great to drive !specially in the earl morning when the water is smooth and theres not even a breeze .