I am getting conflicting information about the center of pressure location for low aspect(reefed) wing sail. Some sources say that center of...
How does the hull volume distribution in catamaran hulls affect seakeeping?
How much stronger and how much better is the adhesion for a higher quality epoxy such as west system or totalboat vs cheap epoxy from amazon? I...
Why do people use such thin sailcloth on soft wing sails? Just for weight savings?
I was originally going to build foil shaped battens out of laminated marine plywood coated in epoxy. Now I'm considering making them out of 8lb...
I have figured the maximum wind loads and was using a tube stress calculator to determine the diameter and wall thickness I will need for my...
It has come to my attention that as the aspect ratio of a foil is reduced the center of pressure moves forward relative to the 25% chord for a...
How does one determine the approximate center of lift for a deep vee hull, such as on a wharram?
This is a hypothetical exercise, so if the question offends your sensibilities then simply don't respond. Let's ignore capsize due to heeling...
How much buoyancy do I really need? There will be no accommodations or storage in the hulls so will have much less volume than most. My thought is...
I would use numerous epdm rubber straps (one for each 7 or 8 lbs of suspended weight, individual breaking strength >50lbs) to suspend the...
I keep reading that high aspect ratio foils can have issues with stalling. Is it the actual chord, or the aspect ratio, that determines the...
What's the optimum naca profile(chord to width) for a wing sail? I'm thinking 20-25%? A thicker foil would stall at a greater angle of attack...
Can you self steer a biplane rigged catamaran by trimming one or the other sail to balance the boat and hold a course relative to the wind?
Why do some Wharrams have added keel towards the back? Is this to solve a balance issue or to add lateral resistance, or both?
Let's say I have a catamaran with 12' beam that weighs 1200lbs, has a CE above the waterline of 15', with 160ft2 of sail area, at 40mph wind...
Please give the image a look and give your input. Not really to scale, just a sketch... Somewhat of a combination of a gaff and junk rig with...
Would moving the center of effort and center of lateral resistance well forward of mid ship cause any handling/balance problems?
I'm looking for simple and easily deployed keel/daggerboard concepts for a small catamaran. Is there somewhere that has a collection of people's...
I am close to being ready to start building a very small catamaran for testing on lakes. What is the methodology for figuring out the most...
