... best but a little more facts would be nice to prepare the excursion.. ... is so big I'm sure you will find what you want hopefully it will work out this...
good day we will now starting with your present harry proa rig take a look at sail interaction you have now 2 ! sails one behind the other and even though the...
good day robert ... sail with minimal standing rigging and the slot from a jib. not much in both cases you have depending on the individual settings 1 a...
G'day, Good point. First off, for a given sail area on a boat without heeling moment or sail area constraints, a non jib rig is fastest. eg Formula 40 ...
-Thanks All for the discussion, I have been thinking of ways to control the flow from the sail on the foremast to the sail on the aft mast and I think it...
good day robert ... I have been thinking of ways to control the flow from the sail on the foremast to the sail on the aft mast and I think it possible to ...
good day rob ... Good point. First off, for a given sail area on a boat without heeling moment or sail area constraints, a non jib rig is fastest. eg...
G'day, The materials list is as follows for the hull, beam, dish, rudders and wishbone. We will play with the mast laminate and length once we know the ...
good day rob on mono hulls windage is not a big factor but since proas move quite easily through the water drag from the water on up can amount to half or more...
Hi, Regarding point 2 below. There is a common misconception amongst sailors about the slot effect between sails. As I understand it the mainsail does not...
--Insects have been arguing over four wings or two for millions of years. In their case I have been told vortex lift is important. It would be interesting to...
G'day, I agree that windage is a big speed killer. However, it is impossible to get full standing headroom any other way, and this was a requirement in the ...
good day ... you try a traditional mailsail by itself with the mast turbulenz from having the groove straight on the back from the profile and then say angain...
good day --Insects have been arguing over four wings or two for millions of years. In their case I have been told vortex lift is important. an " aeroplane or...
you try a traditional mailsail by itself with the mast turbulenz from having the groove straight on the back from the profile and then say angain that there is...
good day rob if you read my line you will see that I was talking about only sleeping in your lw hull and in light conditions or anchoring only this would then...
good day you try a traditional mailsail by itself with the mast turbulenz from having the groove straight on the back from the profile and then say angain that...
... FWIW, last year I went to a Royal Aeronautical Society lecture on this subject by a Cambridge professor who was introduced as one of the world's leading...
... Which facts are we refering to? There has been a lot of opinion expressed, but no factual support - unless I've missed something, the works of Marchaj,...
good day everyone ... Which facts are we refering to? There has been a lot of opinion expressed, but no factual support - unless I've missed something, the...
good day for a two way boat we need a profile for daggers or fins providing lift in both direction ruders can be either one way or also two way depending...
good day ...... ... FWIW, last year I went to a Royal Aeronautical Society lecture on this subject by a Cambridge professor who was introduced as one of the...
... the visionharry. On the 40 footer, your talking about the kind of king size berth where in quiet conditions you would be a lot more comfy camping the ...
... due to a venturi effect between the sails which speeds up the air giving more lift the the mainsail. ... This is all fundamentaly important stuff for the...
G'day, I used Tom's section on the rudders. They were not very successful, partly due to the steering set up, partly as they tended to stall on the flatter ...
good day ... they are pure sailing boats ... has to be easier to build than any two amas on a 25-30 foot trimaran, if anyone is satisfied with a tri carrying...
good day ... sailing bulletin, aerodynamics is for the design of cruising boats a very important aspect since it will decrease the need for a large sail area ...
