How may layers of Fiberglass.....wow

Conservative engineer for layup schedule

So, just cut the recipe in half and take it from there. If he says use 8 layers then we use 5.
Have you had much experience with the matters of his book. How well does it translate into actual boat building (composite).

 

Have you some experience with applying the principles in this book. Does the information translate well into practical ship/boat building techniques...

 

Laminate Design Help

RatRace,

I could design your laminate for you. I have some time to do a little freelance work. Feel free to email your project specs, and we can discuss it further if you're interested. I can design to ABS, DNV, or ISO 12215 for you scantlings. I've been designing yacht and high performance boat laminates for almost 15 years. Have no fear, I'm very affordable.

Regards,

Mike

Mike Myers
Naval Architect
mikemyers@tds.net

 

ABS: scantling rules, and good Design for layup

Hay Mike:
OK: I'm thinking of a 42/40 ft Bertram style, and maybe something like a Danzi scorpion, Send me a PM

 

Mike is your best bet. In saying that, be aware all professionals adhere to
safety factors prescribed by their disciplines.

No. I used Tom McNaughtons scantlings (consultation) plus those given me in the book and where I upped the quality of material (ie epoxy instead of polyester),in conjunction with exotic fibres, it was factored into the laminate.

Experience? Only my own boat.
I build houses for a living. They don't suffer dynamic cyclic loading of any consequence.
Fast track it.Consult a NA.
Goodluck;
And merry xmas to you all.

 

Design Help

Ratrace,

to see some of my offshore fishboat work, visit Rampageyachts.com. The 45, 41, and 33 are my hulls.

Regards,

Mike

Mike Myers
Naval Architect
mikemyers@tds.net

 

Engineering sample Yachts:

Love to see your work. That 45' Convertible, "Now that is what I'm talking about".........Let's do one of those.....Very Nice
P.s. I'm thinking about going with twin 4-cycl engines, no 6 bangers.....to expensive and to heavy.......This boat is going to be an "ape hanger": Friday night party boat with a bunch of drunken apes hanging all over it--probably never put to sea.
I would like to build a 24" (Inches) model of the Rampage 45' Convertiable. Right now, I'm doing a CAD capture of a set of 2-D sketches of boat for a guy down in FLA. I'll scale it down to about 24" for sales presentations. I think he'll need four of five. I'll just lay them up by hand, and maybe do some Mahogany veneer set in clear epoxy for the wood work. He doesn't have any portholes depicted in his drawing, You think I sould add some? It would be a nice touch. A 46' footer is going to have cabins below, they'll need daylight. I won't do it without his permission, though.

 

How about getting a old beater boat close to what you are trying to build and slice it up? See what the scantlings are that they used as a starting place?

Just a thought..

-jim lee

 

Reverse engineering: good/bad

Sure, reverse engineering is a quick way to an end; however, there are lots of pitfalls as well. For example, (a) can you find the boat you want: probably not cheap enough to justify cutting it up. (b) was the boat you found engineered to the desired specifications in the first place: better techniques might render the original obsolete, for example vacuum infused hulls are stronger than hand-layed hulls. (c) lay-up schedules are not generic: one schedule does not--might not-- translate well into a different or modified design.
I am coming to realize that it is best to get the design you want and then engineer from there. And, that it is best to get someone familier with that "class" of design and have the engineering worked out if you are not well versed in naval/composite engineering.

 

"reverse engineering is a quick way to an end, there are lots of pitfalls as well"
I agree, in my case it was not a case of reverse engineer, but re- engineer as it was a rebuild of a partly evolved 1969 strip planker..
I guess it depends on how involved you want to be in your project and whether you have a grasp of the mechanics & strengths of the materials you propose to work with and the ultimate purpose of the vessel.
My partner & I bought an older vessel for sedate sunday cruising.....and then we got into racing it..... if we had stuck to the original plan we would not be rebuilding.
The point I am making, is horses for courses, and the sea being as inviting as it is,if you have built to minimum scantlings,one day you will be caught short.
Do it with your eyes wide open to the peril. (including to others)
Consultation,surveyors,NA's,bulk research, may not guarantee your boats
longevity.
I will not repeat my lack of foresight.
Rant over.

 

Monkey see, monkey do!

I cannot believe the crap that I see sometimes here.

Please, if you do not know what you are talking about, do not post "advice" as if it was knowledge, some poor ******* may believe you and go ahead and do it.

Ideas are great, but please post them as such, to buy a boat and copy the scantlings would have to be about as dumb as you could get. The very reason the boat may have been scrapped could have been because it was crap in the first place!

Please, if you do not know, read up on the subject, ask questions relevant and listen to NA's that do this all day every day, or boatbuilders that have been in the game for more than 5 minutes......some of the crap I read here is darned dangerous to say the least.

Oh, and a Happy New Year to everyone ( just to show that I am not a grumpy old *******)

 

Be smart, not dead......

 

Ratrace, are you building a one off, or do you have molds to build from? You may also want to consider buying a hull and deck from one of the boat builders in New Jersey.

 

You not getting your rocks off at SA lubber? Venting your spleen here now.
All that waiting for Jan 14 getting to you or did you lose rum on the SH?

 

You want to know what I really, really want?

____________________________________________________________

Hello Eagle Boats--where in NY are you located, actually?--is this going to be a "one off"? Well, as far as the hull goes, probably not that unique. The deck and hull combined will have a very "fast" looking modern design but with a little twist. The interior on the other hand, will certainly be "one off" with respect to what you find in the boat building industry.
Molds are the least of my worries, and I would, probably, never consider buying a hull and deck from a generic builder.