david r

  • Content Count

  • Joined

  • Last visited

Community Reputation

5 Neutral

About david r

  • Rank

Contact Methods

  • Website URL

Profile Information

  • Location
    maui, hawaii

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. david r

    Hobie 16 mast huge failure

    You can tie a safety line from the mast base to the beam and have the crew hold the mast base in or against the socket as the mast is raised. That's how we did it when 16's first came out, long before that hinge was developed.
  2. david r

    Team NZ

    Looks like 2 sets of upper shrouds; 1 passing over the spreaders and 1 leading straight to the deck. I wonder how they rotate the mast without regular diamond wires that attach to the base of the mast? The American boat looked like it may have had diamond wires.
  3. david r

    A Cat World Champions 2019

    deck sweeper its sort of funny that it took that long to copy the bottom part of the windsurf sail; the square top was embraced fairly quickly.
  4. david r

    american tragic, is really the future

    the shit show is all the arguing in the forum. traditionally sailboat racing isnt a show. its a sport.
  5. david r

    SailGP 2019

    Keep compiling the data here. It makes it easy to find. these boats are interesting. I still dont know what those pictures of the weird prindle with the raised platform, and tequilla sunrise hobie sails have to do with these 50's though.
  6. david r

    SailGP 2019

    dude,that hobie cat looks like it washed up on the beach against a bush, and it has the mainsheet blocks hooked to the boomvang tab. The 50's are cool a shit though in any case.
  7. david r

    Scow option?

    [url=https://sarasotasailingsquadron.org/wp-content/uploads/2013/01/escow-2.jpg]Scow Bow[/url]
  8. david r

    Larry's AC50 Circus

    i thought the racing was good. Fluky, but the sailors are very skillful. It looked like big crowds up on the railings watching the foiling. There are way worse ways to spend that kind of money. The whole package is almost too clean in a way. Sometimes the boats look like graphics. Compared to the superfoiler racing vids or 18footrz vids it seemed too sanitary at first, but now i'm getting used to their shinny production and electric/sail boats. Lots of cool action caught on good cameras. y'all are a tough crowd here, calling high end cat racing a circus.
  9. david r

    The winning factor

    Even if 2 boats are trading wins, there could be an electrical problem that takes a boat out of contention. The 50's and the superfoilers had that issue regularly. There will prolly be some races where sailing skill wins. Fly time will be critical like in moths, most likely.
  10. david r

    The new sailing twin skin setup

    Hi, When i asked before about filling the twinskin sail with air, they said it's not allowed to sew the leech together, or whatever. i had imagined a rotating foil, ram-air filled(or pump filled like a bouncy castle), but it's nothing like that. Now, i see that the NY test boat has fixed spreaders with shrouds attached to the hull, so they don't rotate the mast. Maybe they want a low windage mast for anchoring. A wide chord mast could maybe tip the boat over at anchor, idk if the ballast is like a normal keel boat or not. i'm guessing maybe the twin skin just fairs out a special mast, and maybe the apparent wind is always forward, so its better to just have a rock solid rig/foil profile. The sail has to be raised and lowered, and this 2 skin thing is all there is to try; other than a giant A cat rig as the M32 does, or a giant formula 18 rig like the GC32. maybe a rotating system will be tested? 20%better seems like a subjective marketing type projection...
  11. david r

    The new sailing twin skin setup

    https://www.sail-world.com/photo/192795 it was post 457 that had the drawing of internal rib things that look like they would hold shape on the leeward side of the sail on each tack after the mast rotates.
  12. david r

    The new sailing twin skin setup

    The article linked on post#470 shows extra forms that may be connected to the mast, that are in between the 2 skins and give shape to the front 1/3 of the sail. I wonder why they say this new rig will be half the weight of a wing? Sail mylar is much heavier than wing mylar. There are battens and internal fairing ribs. The top of the rig has extra stuff. If a boom is used it will be beefy, plus the beef needed for a vang system. Double outhauls and downhauls. Possibly 4 tracks mounted to the D mast, 1 for each sail and 2 for the internal fairing pieces. Damn those wings must be heavy to be twice as heavy as all of those items. Or the article is wrong like they are wrong about that Acat picture showing a boom, but saying it's boomless. They could possibly be thinking the large jib will keep them foiling like the gc 32 foilers do, which still use the genoa when the main is reefed. I don't see how they claim a 50 knot potential with the drag of a large jib sail in the mix. It will be curious to see how they crack this nut. Rather than using a giant A cat rig or a giant 18foot skiff rig, they forge ahead into new ground.....a halyard hoist-able wing.
  13. david r

    The new sailing twin skin setup

    i wonder if that piece at the top of the sail is flotation and/or a sealed off area keeping water out of the hollow between the skins, in case of capsize. The double skin sail may perform better when full of air, so i wonder if they will ram air into it.
  14. david r

    The new sailing twin skin setup

    There is also the possibility of doing ram air on example E. Using your speed to fill the sail with air. It makes a nice foil but can fill with water if you tip over.
  15. david r

    The new sailing twin skin setup

    i wonder if there will be any components of this new rig that could be patented? They say there will be special battens, and it looked like there was some sort of control arm at the head in one vid. Also why would a wide monohull with 2 keels be any more tippy than the average leaner sailboat?