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      A Few Simple Rules   05/22/2017

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malugo

International Moth Plans?

18 posts in this topic

I am searching for plans/drawings/blueprint/CAD-files and such for building a foiling moth.
There seems to be quite a few blogs about the buidling process, but I am having a hard time finding any modern plans so I was hoping you could help me out?

Any plans are of interest even if they are only of parts ex. the foils etc.

 

I would also be interested in detailed pictures of the adjustment mechanism for the foils.

 

 

/Max

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Buy a used boat in going condition, lean to sail it, go to regattas and learn everything you can from the fast people, then think about building your own boat. Any short cut will cost big money and lead to disappointment.

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There are no published designs of any modern fast boats. Most are commercially built and a few are home built and developed. no one makes detail drawings available. If anything has been published in the past its obsolete by now.

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If you follow Phil's frank advice, along the way you'll also learn where to source free CAD programs for foil design, who has designs of reasonable foils, what works and what doesn't.

 

There's a wealth of knowledge at any major regatta, look at lots of boats and try to understand the principles since just about everyone has a different approach to doing the same thing. Be prepared to spend many, many hours tinkering, testing, building, re–building and fixing (that goes for any Moth). If it goes as well as it possibly can, at the end of the day you'll have spent about as much as a reasonable second hand production boat and have something that is worth considerably less, even if by chance it goes faster.

 

So if you are doing this for the sake of building your own boat, at the end you may enjoy the experience and have a boat you enjoy sailing. Best of luck and I hope it goes well. :-)

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Buying a used boat sounds like the easier option, I am not really interested in buidling a boat at this point.
But I am interested in the design and the technical solutions for the foil adjustment and such.

So are there any build plans online or anybody willing to share their design?

Or mayby somebody has a few good photos to share of thier foil adjustment setup?

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If somebody asks for plans, he is interested in the plans.

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Personally I find Nick's site far more interesting that mine ! :D

 

My site deliberately does not contain any plans or designs as they are the property of their designers, and royalties need to be paid to the designer for each hull. Key numbers are deliberately omitted, as are laminate schedules as I don't want people getting themselves in trouble.

 

If you are dead set on building, I would recommend that you contact a local builder and buy a hull shell, deck and frames, and then progress from there.

 

However I have to echo the advice of Phil above, that if you are building as a way to get a boat cheaper, than that is the wrong reason to do it. I built my own boat in the period when foilers were in very short supply (before Bladerider existed). It has taken 5 ish years of developing that boat to get it to have reasonable pace, and most of that development was progressively swapping out home built parts with professionally made ones.

 

Now, that doesn't mean that home designed, and home built can't be faster, however even most "home designed" stuff is now being professionally built, to get access to commercial grade CNC, or 3D printing etc.

 

You can get a second hand prowler for $5K now, and you will never build for that price.

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Buying a used boat sounds like the easier option, I am not really interested in buidling a boat at this point.

But I am interested in the design and the technical solutions for the foil adjustment and such.

 

So are there any build plans online or anybody willing to share their design?

Or mayby somebody has a few good photos to share of thier foil adjustment setup?

 

http://perverted-moth.blogspot.com.au/2012/02/count-teh-convolutions.html

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Note that most of it is outdated, but worth a look if you can't see a mach2 in person.

 

And Markla hasn't updated it with results of the convolution machine but it works much better than anything he had on previously, so that's a positive.

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Yep, both of those. That control system design was scrapped reasonably quickly and Markla has finally gotten around to putting something decent onboard. Also note that the current boat bears very little similarity with the plans. Only thing that is similar is the hull; both foils are different, gantry has been through numerous iterations (although I think Markla still likes the aluminium pipe gantry), control system is new, wing bars are new (retro fitted from an assassin).

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I also vote that you should buy a used moth and get into the class before trying to build one without an intimate knowledge.

 

They are a lot of work to make and very structural, if you were to spend the time making one the first time and you brought it to a regatta (if it does not break) you will then probably learn that you should have done things different.

 

We only want peoples moth experiences to be good and successful so that will stay in the class. Buying a used boat will be much easier and you will learn lots.

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