Did some rough calculations on the Harryproas stability at 90 degrees. Empty, a Harry is stable on its side but not by a large margin. Probably the resistance...
Hi Rob I do not have experience with the bouy at the top mast but I wonder how much a cleated sail in the water acts as a fulcrum to force the mast to go under...
Hi Carlos, My own experience with lots of capsizes in small boats and windsurfers is that the sail damps the initial rotation and then if you don't uncleat you...
G'day, Went sailing on Sunday in Elementarry to assess una rigs vs schooners. 15 knots of breeze, solo, with 11 sqm/118 sq' of sail. This is half a Tornado...
Hi Rob, Did you just use one of the schooner's rigs in a new central hole? Did you have to restrain the forward rudder or just ignore it? Did you move aft to...
G'day, Hi Rob Did you just use one of the schooner's rigs in a new central hole? Yes Did you have to restrain the forward rudder or just ignore it? Initially I...
... Brian Phipps does it successfully with Darts, AFAIK. But a standard Dart will not normally turtle immediately anyway. ... Don't forget that in strong winds...
I agree. Beyond the lower righting moment when reefed, buoyant sails would also be less useful once you uncleat the sheet in order to right the boat, allowing...
So, Mike, what if a mast head flotation system could be built that actually enhanced the anti-capsize function while having a positive gain on aerodynamics?...
What about preventing the capsize with a device attached to the ama? Let's say a parachute hung on the side of the ama in a bottomless square box in such a...
<<what if a mast head flotation system could be built that actually enhanced the anti-capsize function while having a positive gain on aerodynamics? Would that...
OK, Mike... and everybody else who may have an opinion on this. Located in the Files section is a folder titled End Plate Sail where I have put a collection of...
Rob, Is it possible that the decreased resistance by lifting the forward blade and the raking forward of the rear could contribute to this? regards, Robert ......
Oh, I forgot... The full treatment to the sail also includes a boom like you would see on the really spendy, mega-yachts where there is a decided wingish,...
An interesting idea, alltogether. Bouyant panels and endpieces. I will discuss this with a sailmaker. IŽll relay his opiinion. Thanks, Peter ... like you...
-In -http://groups.yahoo.com/group/kssboat/ there are a series of well referenced posts on the problems of capsize after a post by Derek Kelsal about a...
It seems a natural progression is a single centreboard with fore and aft but not lateral symmetry that can be pivoted in case of collision or partly raised....
G'day, I sailed with both rigs and one rudder, still felt like it was pushing a lot more water than with the single rig. Not sure about the rake. The new...
That's about as good a masthead flotation system as one could imagine. Nice design, pretty aerodynamic, and it doesn't look like the hobie "training wheel"...
I'm intrigued. Trying to thnk of all the parameters and can't really think of any that make sense. Weight. Easy to check by adjusting weight but doesn't seem...
Note , if you are careful with the weight distribution in the ww hull with batteries and water storage you can just bring it back the other way, but it is...
G'day, The natural progression I see is to a single water foil doing both leeway prevention and steering. 3 foils is a lot more work and drag, plus more...
G'day, Agree with your comments except for the mast angle. I suspect it will be pretty close to 90 as the lee hull will be partially in the water. As long...
G'day, Agree it is a bit peculiar. Best I can come up with is the reduced weight. 31 kgs (including the rudder) is significant on a 130 kg boat. COE is near...
... leeway prevention and steering. 3 foils is a lot more work and drag, plus more complex to use. ... interesting to see on the raked forward wing mast! ... ...
--If you can do it, I remember talking to Loch Crowther many years ago as the natural progression ofthe centre board and the rudder finally meeting with the...
-my calculations are in the order of 3-5 degrees and have tried to imagine the circumstances where the wind wave would work together. It would be coming off...
-been thinking of a possible speed hump. Once the bow depresses, the frontal area and surface area in the bow the increases, increasing drag and causing...
Nothing else up my sleeve. The boat sails well with either one or two sails and only one rudder, although rudder area seems a little small with 2 rigs. The...
