Hi Ian, You are a very clever and resourceful guy. My concerns are as follows: 1. The attachment, "connective tissue" apparatus, from the center hull/aka...
... hull/aka component to the cat hulls. ... rudders as shown in the photos. ... water, once again and power it up with the illustrated outboard? ... Thanks...
Hi Ian, Is this boat going to stay in calm waters all the time? Forgive me if that was discussed and I missed it. Chris [Non-text portions of this message have...
... Could you explain this in more detail? I find the idea interesting, because if it's true that low-aspect rudders are as efficient as high, then I could...
Australian members looking for a project might be interested in a neglected F9A in Sydney advertised on Boatpoint for $39K and for auction on eBay (search for...
Recently I've noticed that the prices of dyneema line have come down substantially, so that some varieties of it are a fair amount cheaper than 1X19 stainless...
I have used Dynex dux wich is a pre-streched dyneema on my 43' cat and it works just fine. It is not recommended for places where chafe may be an issue such as...
... I can add some info - history I guess it would qualify as. Things move slowly in this industry - In the early mid seventies a co. called International...
Ray, What catamaran are you building? And where? I used 5/16" Amsteel gray (1/4" would probably have been sufficient) purchased from Seattle Marine Supply very...
... Gene, thanks for the excellent info-- very encouraging. Have you had any chafe problems on your forestay? The thimble and shackle deadeyes seem to me...
Does anybody here has experience of building a small trimaran with the skin on frame method (commonly used on kayaks, and some proas). Is it in some way...
If you can't tension the skin appropriately, then all immersed surfaces will have some negative curvature, as you describe. Perhaps you can take a look at the...
very interresting design, but to me it looks a bit weak, will be able handle the forces when going upwind? or is it only designed to go downwind? I cant se no...
Hi Daniel, You can write Tom directly at this address: tom_yost@... Perhaps he can fill you in on some of his thinking with this design. Chris ... From:...
Yes, I did a bit of pre-stretching. Spliced an eye in both ends, wrapped it around a power pole and led both ends back to my little Nissan pickup. Pulled away...
Gooday Ray The following are answers to your question: 1. The best answer about the rudder aspect ratio of 1 is Bruce's article in the AYRS publication no. 82...
Hi Ray, Ross Turner on his Jarcat designs uses a low aspect rudder with about 30% balance & they work beautifully. Only fault I've found with them is that when...
Builders & Thinkers: I know I've seen this talked about before I may have brought it up myself, but what about door skins(one's I've seen seem to be made of a...
... with about 30% balance & they work beautifully. Only fault I've found with them is that when they "kick up" (actually pivot back) the tiller loading is...
Dan, Ian Farrier designed and built pretty much what you describe. It looks pretty slick. I have some pictures of it if anyone is interested. Ray, It sounds...
Here are pictures of a kick up daggerboard rudder on a 30' tri. http://groups.yahoo.com/group/multihull_boatbuilder/files/Kick-up%20dagger%20rudder/ ... From:...
Had an open backed dagger box rudder on my last ts with the blade held forward with shock cord. This was great - only problem with the Jarcat rudders is that...
I've been using it on my latest project, not boat related. Interesting stuff to work with, you need to be careful you don't melt it. Rope rigging is making a...
Swiftwood@...
Aug 9, 2007 3:06 am
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What is the consensus of the group of the optimum size of a couples cruising cat? By that I mean a least a diesel, generator, the usual "stuff" occasional...
G'day, There is no optimal size, just different compromises. It should be big for seaworthiness and comfort, small for marina fees and maintenance. A big rig...
Hello, A friend and I are going to take a Slatts 22 main hull, add 2 Hobie 16 hulls and make a trimaran. The Slatts beams are 5" diameter which seems to be...
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