david r

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Everything posted by david r

  1. david r

    head like a hole

    i wonder if they will take the guy who left the backstay on, off the boat in future heats?
  2. david r

    Team NYYC

    electronics on a wet boat...most of the AC foiling heats and other foiling heats with coms, that i have watched had at least one boat having problems with an electrical component... sometimes it's intermittent, sometimes it ends the heat for them, sometimes they loose because of it, but still finish. it seems to be part of the game many times. Ineos didn't seem to know where the boundaries were in the previous heat for example. p,s, great job getting that boat back to port with that size of hole in it.
  3. david r

    Main sheeted to windward

    I saw them pull the traveler up to windward right after they lifted the foil after a tack. almost like pumping after a tack on a board. I wondered if maybe they could also pump a little more sometimes in the lighter puffs. the cats also pulled the wing past center a lot, so it must be good for some things.
  4. david r

    white men.

    They used claim catamarans started in bora bora. Now i dont see a reference to that in a search. Searching is difficult these days because of all the info and advertisements using similar terms. This site claims that brits first saw them in india. https://www.newworldencyclopedia.org/entry/Catamaran this one, Polynesia. https://encyclopedia2.thefreedictionary.com/Catamaran+History The first voyaging canoes with twin hulls were Polynesian and they could make ground to windward. during the same time period, old square riggers from europe could not go above a beam reach very well. the went downwind with the trades and waited for the wind to shift the other way to get home, or at least that is what teachers said in school. It is possible that the voyaging canoes were invented long before square riggers. ps. the ndl says you need to be white to be racist...that seems racist to me XD
  5. david r

    Luna Rossa Challenge. AC 36

    the last one on the list
  6. david r

    Will we see a dry race?

    What about complete wet laps? They are saying the race will be during a light air part of the year. If wind is steady enough it looks like they can do everything a moth can do as far as staying airborne.
  7. david r

    The new sailing twin skin setup

    It makes sense that the flow from the windward side meeting the leeward side aft of the leech would be less drag than if they, the air flows, met right at the leech. (gap between leechs vs. no gap) i wonder if full wing mast/sail as on the cats should be made with a fat squared off trailing edge as well? or maybe they were?
  8. david r

    Classic AC Skullduggery

    there probably wont be any problems with electrical systems, hardware, software, or firmware in a salty wet environment:)
  9. david r

    Team NYYC

    A big mast like that with uppers and lowers that rotates is a bit of a puzzle. I wonder when they will show how that works, if ever. The twist controls must be interesting too. Maybe they had a problem in one of those areas...
  10. david r

    Team NYYC

    Leeway. Anyone mention that? Even if a sailboat could regularly point up to 30 degrees, which i seriously doubt, they maybe won't tack on 60 degrees because of leeway. That means they would go past the 60 degree layline before tacking. Leeway will affect VMG, as does the bearing off to pick up speed to then gain height. My apologies if that is too obvious.
  11. david r

    Team NYYC

    lol, 30 degrees to the wind as a regular upwind sailing angle. where did you get that phd of sailing? maybe from your smack dealer. They seem to point pretty high at times, but 30 degrees would be too high for a sailboat on a regular basis. Some of the video looks like they are lower than 45 degrees.
  12. david r

    Team NYYC

    Some of the most coveted info would be pointing angle/downwind angle when powered up. Having access to that on a public forum at this juncture would not make much sense, considering the teams probably only know their own data so far. Maybe fast and low downwind will win the race.
  13. david r

    America's Cup Betting Odds

    If you are on an island, and no one can go there with out a 2 week isolation, how could an outbreak start? If it did, that would mean they don't know how it, the "virus" travels/works... Alternatively, if you are on an island with no cases of a virus, why would you need to social distance and wear a mask?
  14. david r

    Stick a fork in it

    "dumpster fire" lol the shutdown is giving more time to foil, surf, sail, and test around here. ppl are getting better and better on foil boards, using faster and faster foil profiles. NZ will probably just isolate new ppl to their island for a couple weeks when they show up to race. The boats are a cool but weird combo of electric and sail. Should be an interesting event, barring some type of world war. Although even during a world war some rich ppl still enjoy life. my opinion is that probably, if a team has a competitive boat, they will still be outsailed by the kiwis who are really good at foiling....time will tell
  15. david r

    Lock down madness

    Hill and Knowlton advertising firm has been hired by the WHO to sell you on the pandemic story. That is the same firm that sold you the fake story about throwing babies out of incubators, supporting the invasion of Iraq. https://www.corbettreport.com/who-cares-what-celebrities-think-propagandawatch/ A virus is a microscopic particle. So small that it can't be photographed. It is not alive. The germ/bacteria theory does not apply. Something that was never alive can not live on a surface for 20 minutes, but you could find plenty of bacteria on your face diaper.
  16. david r

    Hobie 16 Rebuild

    Foam sandwich is how many beach cats are built. That means there is glass on both sides of the foam. Only glueing one side back is not going to work very well if both sides are delammed. It's a blind operation if you don't cut a section out and look in there first. corecell is a good core ,it is sort of half way between airex and divinicell/cledgecell. typically the skins are glued on the foam using vacuum bag technology. the early hobies used surfboard type sheet foam which later could turn to powder. They switched to a better foam like divinicell in the 80's. Idk what they use these days.
  17. david r

    Hobie 16 Rebuild

    i wrote blind injection of resin because you can't see where it is going. you dont really know if only 1 skin is delammed or both top and bottom without cutting a section out and inspecting it. If you shoot resin in there you don't really know where it is going and you might be making a mess and adding weight to the boat. gelcoat is sprayed fairly liberally when they build a boat that way, and sanding with 600 or higher grit should not go through into the glass. Sometimes you can bring the shine back with just compound and a buffer, or liquid products for fiberglass. If you paint with a color that doesnt match the gelcoat, any little scratch will stand out.
  18. david r

    Hobie 16 Rebuild

    Hi, thread is a little old but i have a couple comments. Those hulls look ok to just fine sand and buff out. A painted finish is not going to look good when it gets scratched up at the beach. If your are trying to lighten the boat weight you could sand all the gelcoat off and paint with 3 part polyurethane. Gel coat on a repair is for a color match. Gelcoat is a product that is sprayed into a female mold. The side that is blocked from the air fully cures and the side that you will apply the laminate to remains tacky. On a repair they spray pva on the gelcoat to get the outside to fully cure. It would be a real shitfight to gelcoat an entire hull after it is out of the mold. Blindly injecting epoxy into a delam is a good way to gain a lot of weight , and it may or may not yield lasting results. Carefully cutting out a section of deck and getting a good look at the delam might be a better idea. You could maybe glue that piece back in with thickened epoxy or install a hatch/cover. You can figure out the best way to proceed once you can look around in there.
  19. david r

    Luna Rossa Challenge. AC 36

    The superfoilers would occasionally sail with both main foils in the water to stabilize their foil-borne racing.
  20. david r

    Corona Virus

    Tourism got shut down because ppl are afraid of catching some sort of weird cold. They better shut down going in the water for fear of drowning. Drowning numbers are high....
  21. david r

    Team NYYC

    plus we have Emiratis funding multiple teams from this ....algorithm? that cant write anything like the real hunter thompson .If thats a real person his brain must be breaking down from the isolation. a bot that uses fuzzy logic and mis spellings would be fairly advanced i guess, though.
  22. 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...
  23. 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?
  24. david r

    Larry's AC50 Circus

    Somtimes it looked like england had a speed advantage.
  25. 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.