I have almost finished a Gary Dierken's inspire 20 ft proa in Miami. The hull, platform and ama is done and left clear wood color, the akas are made of US Army...
G'day, A bloke on this site wants a sci fi boat designed. Thought it might appeal to some of you :-) http://www.boatdesign.net/forums/showthread.php?t=7514 ...
Fundamental error: there is no PURPOSE to evolution by natural selection, just a result. Evolution by design requires a designer. In the case of humans there...
... This is a perfect boat, Carlos. It does not need the rig, of course, because we are positing kites on an outrigger canoe, not a proper proa. The filming...
... out ... shorten ... it ... Czesc Todd Your observation is absolutely correct. When vaka is fully loaded with crew then ama is too high, keeping aka out...
Czesc I'm back from holidays when Pjoa was sailing at force 1B to 3B. 4B appeared too much for present akas, but everything is still in one piece nad not bent...
Good going, Januzs, glad to hear the proa is working fine, and especially glad to hear the use of the brails is also effective when wind aback. This should...
Sure, I will be more than glad to help your project - it would be fun - keep my info below and give me a call ahead of time to coordinate - I am a sales guy so...
How about a Cuban boat? - take one of the cars - welded water tight - add flotation, ride the currents - I am sure you guys have seen the several versions...
... I have and I am INCENSED that the Coast Guard sank them! These things belong in museums, not at the bottom of the sea. (Thanks for your offer; I will keep...
Janusz , Thanks for the feed back. Looking foRward to the pictures. Interesting to no you feel your akas were not strong enough. Why? If ama gets unweighted...
... high speed ... highest ... page 173 in ... result of ... (leading edge) ... vortices are out ... I don't about the book (Sail performance)or the aurthors...
... From: Todd Sent: Tuesday, August 02, 2005 9:27 PM ... If you ever get the chance to read it you should, it is an interesting book. Only a small part is...
... Very delayed response from a windsurfer. :-) In strong wind, windsurfer mast cants to windward, and your body hangs way out to the side. Both counterract...
Czesc Todd Mys observation about akas flexibility comes from the last day of sailing when gusts of 4B ben happening and I invited two crewmen each weighting...
Hi all in Proa File 4 in Files at PVC Pipe Proa folder I post some Pict of de 1/5 model. not finished yet but you can get an idea I apreciate some feedback...
In my last post "I think (just my personal opinion here) but if you raised the ama up it would take alot of pressure of the ama while sailing." I meant...
Hi, Some thoughts on connecting structures – Mention made of the Marshal Isles type with sturdy beams indirectly attached and secondary, directly attached...
Windsurfer Masts 14ft and 15ft fiberglass tubular windsurfer masts. also shorter sections. Lightweight and very strong. some new and unused, still in original...
... I pulled and stretched the demesions of the brick designed by Phill Bolger but with a shunting rig. And with curves like your design insperartion can only...
... Pjoa's CC was cut completely flat as a planform, then adding few centimeters of cloth in the middle of yard. Sail is not flat because warp orientation...
Don't forget the huge influence of the spar stiffness. If you put a lot of luff and foot round into a flat piece of fabric and then use limber spars, they'll...
... That's been observed on Pjoa's CC. Upper part of CC works as high aspect, shallow profile sail with curved leading edge. ... I've seen as lower CC part...
... Such a purpose could be an ease of going downwind without big force in rudder needed to counteract aerodynamic force from sailtip sheeted out far to...
just adding two cents to 2D or 3D flow around CC: In Pjoa tests of downwind course, telltales on shroud showed 30 deg differen wind direction then on stay or...
Do you mean as in.... MonoProa?? For what it's worth, I like these square boats. Some are better looking that others. I think they built the one in Alaska in 5...
... That's another good use for brailing lines! In my youth I sailed a dinghy (called a VJ) which had fairly low aspect ratio mailnsail with only a small...
