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david r

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Posts posted by david r

  1. 10 hours ago, Boink said:

    Hey Slap Pappy - isn't this most boring racing that you have ever seen, the exact premise of what Sail Gp is?

    The same series that you bore us shitless with endless superlatives and sycophantic descriptions. 

    True colours displayed or tongue slip?

    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.

  2. 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. 17 hours ago, antskip said:

    Sailgp is yachting's harlem globetrotters. a corporate response to being defeated in AC by  a brutally good NZ team who used these boats for purpose and quickly ditched them after victory (for something even more extreme - but the AC is not exhibition racing, at least). IMHO the Sydney 18 footers that race every Sunday is a much more interesting spectacle, presented far better by a superior commentary team. tippy skiffs which sail in and on the water with 3 on trapeze, spinnakers, expert commentary, free to view on web and youtube. https://www.18footers.com.au/18-footers-sailing/18-footers-tv/ The annual 'world' championship the JJ Giltinan is coming up from mid-March. Real racing on real courses almost every day for a fortnight.

    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.

     

  4. 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.

  5. 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.

  6. 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.

  7. On 12/13/2019 at 4:16 AM, ita 16 said:

    I'm glad somebody finally writes about this topic.

    to the technical aspect of question "sails" I would like to add that wing sails have never proved to be performing upwind, and was for this reason that I have not adopted these sails on S9.

    a wing doesn't perform well upwind?  Is that just for foiling? 

    It certainly isn't true for floating cats.

  8. 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.

  9. 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.

  10. 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.

    • Like 3
  11. 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.

  12. 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...

  13. 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.

     

     

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