Idiot Swing

Take one charter boat, a spare spinnaker halyard and some clowns fired up on rum...The pictures speak for themselves really...some extras added for amusement also...

What's that boat in my mouth?

Had an idea for a big boat (well bigger than a moth). It's a variation of someone elses idea for a small sports boat which used a straight horizontal board that could be shifted sideways to produce lift on the leeward side of the hull. This would increase righting moment and provide a little vertical lift. The problem I see with that idea is that it is very close to the surface when the boat is flat and produces a negative side force when heeled. My idea puts the foils deeper in the water and allows it to be rotated to nearly horizontal no matter the heel angle.



The case mechanism could be a little tricky if the board isn't circular, but some carefully placed hinges, guides and flexible water barriers should do the trick.

Someone else has probably had this idea too, but thought I'd share it anyway.

The hull is one I prepared earlier.

http://www.youtube.com/watch?v=CG3gQ_I1L3E
http://www.youtube.com/watch?v=886H3CXYR5o
It's the future...maybe...

Hopefully this brings us back in line with our usual standard of posts after marklas last couple of (really) weird ones.

trifoils

curious about trifoils?

hydroptere is my desktop.

• Route WRC (or ply) into pressure/suction sides.

• Use a bricklaying style to assemble routed pieces into one long lenght, long enuf to do both foils

• One Wrap in WR carbon.

• Screen with a fairing template along entire length. Also route a female shape for the pressure and suction sides, cover in brown tape and use as a mould for the bog. This doesn't have to be the length of the whole job, just the immersed length of one hydrofoil side.
  
  
• chop lenght into parts as required and secondary bond together.
  
  
• use with my existing T foil.
  

(doesn't include holiday my parernts so I can use their garage again)

Wind is gay

schwinge!

http://www.schwinge.co.uk/

The Architecture of the Tetrahedron Super Yacht.

The design is instigated by the re-thinking of the form, superstructure and propulsion of the modern super-yacht into a radically simple enclosure and an elevated mode of travel above the water line.

The superstructure form is reduced to the absolute geometry of a Tetrahedron. A three-based pyramid consisting of 4 faces and 6 leading edges provides fundamental stability and enclosure. Its form produces a pure, precise, logical and mathematical ‘roof’ for which to connect to the hull assembly. Generally, simple forms are not known in ship and motor yacht construction through restrictions in ocean-going hull design.

Ocean Flying Triangle

The Tetrahedron would have the appearance at high-speed of ‘levitating’ over the water: a boat that can fly. This is produced by a HYSWAS hull - A Hydrofoil Small Waterplane Area Ship - that is comprised of a single retractable vertical strut onto a single submerged ‘torpedo’ hull. The vessel will lift out of the water at speed on side-mounted adjustable hydrofoils.

This hull form has two working ‘waterlines’ for its operation. At low speed the Tetrahedron sits gently onto three underbelly hulls. At high-speed the hydrofoils rotate on the lower submerged hull, causing the effect of mysteriously raising the triangle out of the water.

The concept design of this HYSWAS craft is based upon an existing hull design which has been developed by several companies, notably the Maritime Applied Physics Corporation in America, and has been proven by their technology demonstrator - ‘The Quest’ - in 1995.

An auto-pilot ‘fly-by-light’ system from the aviation industry would take control of difficult roll forces and maintain ‘foil bourne’ speed. This would also control pitch and heave.

Long distances are achievable with reduced out-of-water drag and stormy ocean conditions would incur virtually no slamming. Improved efficiency is driven by elevated hydrofoil propulsion and would be an inherent performance benefit of this type of design.

Long distance, smooth travel through rough water at high speed: the key performance attributes of this new motor yacht design.

Sent

Well that was a great day of mothing. Good wind, good height control, reasonable endurance (well compared with all previous attempts), no breakages and plenty of speed. Unfortunately the GPS is busted so no top speeds to tell of.

Markla was lucky to get three days of mothing in last week and it really showed on Sunday. His windward heel looked pretty much spot on with mainsheet and hiking skillz working well together to keep it all smooth. It sounds obvious but getting the basics right on a moth is tricky as well as important. He tried a couple of gybes too, first two were far enough but he didn't move across quick enough, third was an over correction and didn't go far enough around before trying to change sides.

I was nervous about going out because it looked quite windy but after seeing Markla handling the conditions easily and the boat looking very stable on the foils it had to be done. And it was well worth it, upwind was fast and in control, downwind was fast and in control. Paced a cougar cat upwind for a reasonable distance. Tried a gybe but wasn't sending it through far enough or with enough speed. Longest foiling rides I've had by far. The arms and hands gave up first and the quads were sore (but didn't cramp like last time) but the hamstrings really weren't used to sitting on the wing bar that long and hard and were the sorest on Monday and Tuesday.

The internal vang works now that it doesn't twist up inside the boom, only problem is that the line is a little too small and the cleats don't hold it when fully cranked.

Still a couple of jury rigged repairs to finalise; the pushrod is held together with grey sticky weld, wand paddle is huge and heavy (it's a resin infused 50mm paint brush taped to the wand, the wand will bounce up on a wave and without plenty of shock-cord it comes down very slowly which is affecting ride height a little), the gunwale edges under the heavily loaded lacings are cracked (markla is still debating which solution to implement).

I busted my ankle at touch last night, can't put any weight on it, so won't be sailing this weekend. Bugger, was looking forward to it.