david r

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Everything posted by david r

  1. How the hell can someone pick one guy as the worst president ever? Have you checked history? Woodrow Wilson signed off on the federal reserve act, then took usa into ww1 after running on the platform of keeping usa out of the war. FDR might be another candidate for worst...
  2. david r

    Boats and foils comparison

    quote from a scientist.... Therefore, assuming the entire mass of the earth is located at its center, we can calculate the force of earth's gravity at the equator and at the poles. Using Newton's law of gravity, we find that the force of earth's gravity on your body at the equator is 9.798 m/s2 times the mass of your body, whereas at the poles it is 9.863 m/s2 times the mass of your body. Has anyone ever actually dealt with this at a race where you have to weigh in? If earth is an oblate spheroid, why is the blue marble image always shown as a perfect circle? How did the LEM lift off from the moon and link up with the orbiting craft above, when it left it's engine on the moon?
  3. david r

    Larry's AC50 Circus

    Somtimes it looked like england had a speed advantage.
  4. david r

    SailGP 2020

    the 18footers camera cat/ drone guys do an awesome job. it just for fun for them. they will cruise behind a team and check their rig and comment, the races cover a much larger section of the harbor, the camera cat crew also have great info too. the glitzy hollywood style sail gp presentation is not as fun as the reals guy out on the bay just following the race for fun. the super foiler presentation and racing on sydney harbor was really cool too. they had wind and a big course through the traffic. i liked watching the race in france, last year i think, with the french commentators. i dont speak french so it was just a nice background noise, since i dont really listen to commenting. it more fun to watch and have my own thoughts about what i am seeing.
  5. david r

    Luna Rossa Challenge. AC 36

    Bearing off to below a beam reach to get on the foils upwind, might make for some strange upwind legs...
  6. david r

    The new sailing twin skin setup

    Probably already covered, but when the mast rotates the outhauls would most likely switch too. Independent outhauls make sense. Would be nice to see a detail of the spreader attachment to see how the mast rotates inside of them. i still wonder how that works.
  7. david r

    Family Freindly Beach Cat

    Check for G cat 5.7. front tramp, boomless. buoyancy for a small family is no problem.
  8. david r

    ACWS - Portsmouth

    Imagine this race in england... 4 boats "competing" in 3-6 heats. All 4 teams needing to hide any innovations, and hiding their boats speed, pointing ability, and downwind abilities. What kind of tactics would they use? Put old components on the boat that wont be used in the cup? always start early or late? Always tack or jibe away from the other boat? always foil slower than the boat is capable of? pray for sub-foilng conditions? break something on the boat that keeps the boat from racing? There would need to be special trainings on how to go slower than normal while looking like you are actually racing... i do see the PR benefits, and think seeing 4 of these beasts together sailing would be interesting though. maybe a little wasteful, but interesting.
  9. david r

    ACWS - Portsmouth

    i wonder why NZ would set up a situation where they have to send their equipment all the way to europe before the actual cup races? There is a good chance that the competition will benefit more than they will. Time and money will be used in a way that could hurt their chances of winning. sorry if this question has already been asked.
  10. david r

    iFLY15 - bullshit marketing?

    maybe it depends on the wing and/or the boat length. groupama C wing kicked ass upwind. there was an winged18 square in the 80's that kicked ass upwind that i raced against. he was slow downwind, but that was probably technique. It was a scaled down C cat wing. He had to keep it in an enclosed trailer at night.
  11. david r

    iFLY15 - bullshit marketing?

    a wing doesn't perform well upwind? Is that just for foiling? It certainly isn't true for floating cats.
  12. david r

    Emirates Team New Zealand.

    There was ACWS in SFO where jimmy guys capsized and righted with help. They finished but i cant remember if they won the heat. also i disagree with the italian guy that wants flat seas for everyone. i can think of 2 heats that we flipped in and still won that heat. 1 on an 18 ft cat, 1 on a16 foot cat. Both times we had a comfortable lead.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. david r

    Scow option?

    [url=https://sarasotasailingsquadron.org/wp-content/uploads/2013/01/escow-2.jpg]Scow Bow[/url]
  19. 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.
  20. 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.
  21. 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...
  22. 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.
  23. 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.
  24. 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.
  25. 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.