-I was giving a lecture the other day about diffusion rates of CO2 across stomata of tree leaves- big topic at the moment with CO2 increases effectively...
Rob, ...... or anyone else on the forum... Ever figure out what is hull speed for an asymmetric proa design ? Or how the current mathematical approximations...
If it is composite, you will hear a lot of creaking and cracking before it breaks. I would work on one of them doing the lifting as in a capsize you will...
Yes, Harrigami and Harry. Anchored out with the lead mines. It is worst in tidal areas or with swirling winds because the boats move around quicker. If...
Robert, I'd like to sense a failure ahead of the crack, split whatever, so as to salvage the mast and simply add more glass around the outside. But that would...
Rob, You are talking about boats like the harrigami that you anchored a few times? Bucket I understand. Elemntarry is so small I see it tight up against the...
G'day, Not as whippy as it looks, but could be stiffer, I agree. The sail also needs a bit of work. With a bit more cunningham, the sail would have pre bent...
Hello ,I was watching the video of the visionary sail, sweet looking boat. But I have a few questions? The mast looks very whippy or flexing alot with the sail...
G'day, You are right (and I am wrong) about 2 masts vs one. The stiffness and the strength are different, and it is the strength which needs to be enough to...
-I would have thought that with the safety factor needed for gusts and wave actions it wouldn't need quite that level of load spreading. The mast has to be...
Check out the PR announcement at <http://www.zyvex.com/News/Synergy_PR.html Zyvex Corporation today announced the world's first sailboat mast using carbon...
G'day, Not that easy as the pulling load has to be evenly distributed along the mast. Needs a lot of pulleys so that the single load can be dissipated to...
Easy enough to check if the masts are strong enough. Load them up by trying to lift the ww hull with a 100kg weight sitting on it. I was looking at the...
... breeze comes in 20knots. ... from experienced multihullers out there. Like when you anchor a bigger boat out further where the wind is. What about two...
G'day, I used a bridle from the bows and adjusted it so the join was near enough the middle of the boat. Worked pretty well, but the boat still blew around in...
Hi, Just meant swinging around on the water, like anchored in the sea breeze comes in 20knots. I was wondering about general ideas about swinging around coming...
Dear Doug, Dear Wangkas, Nice pictures and all, but where is a finished sailing boat? We know it takes a long time, but sometimes we have other worries on our...
Dear Wangkas, Nice pictures and all, but where is a finished sailing boat? Also, what do you hope to acheive with around beam? Thanks again for your mast...
Rob, Would you be interested designing a easyrig for my 47' cat I am building ? Also tried to e-mail you but was returned and will proa web site be back ? Like...
G'day, Not sure it can be done, but the rails are very prone to damage if the shunt does not go smoothly and the rudder stops between the beams. No reason why...
G'day, First, congratulations on making it to Mandurah. Doubly so, considering the state of the windsurfer rigs. Using the tiller extension is a good way to...
Rob, I was just looking at a pic of whatever your boat is called - I guess it is THE Elementarry - anyway how about using the pole/tiller to shift/slide the...
Yes Robert, It is not readily comparable to other boats, the buoyancy and length of Elementarry hulls are noticeable compared to say a surf cat. Multihull...
-5knot avrage with the windsurfer masts is nice cruising. Nice to hear the the seahandling fits the theory robert ... Nice ENE to head South with a low swell,...
Hi Proa People, Got to Mandurah, which is 50nm down the coast from Fremantle. Nice ENE to head South with a low swell, and offshore winds was a good run....
Hi Nicolas, My name is Doug and maybe you can ask any questions about how long, how hard , how expensive to build the Elementarry. I have sailed it down the...
