atwinda

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Everything posted by atwinda

  1. atwinda

    Emirates Team New Zealand.

    Well, only one team has both an AC72 and an AC75... guess you're going to have to ask Dalts to recommission the 72 and do an exhibition race to replace his missing $3mil bucks.
  2. atwinda

    Emirates Team New Zealand.

    Not to get in the middle of you two, but it would be fair to point out a few things. It's reasonable to assume that an AC50/F50 would be able to resume sailing after a capsize if it had a soft sail. The wing sails seem to take the most damage from the capsize. Other damage did occur but seemed more superficial, fairings, film, etc.. So I would attribute the AC75's ability to continue sailing more to the rig and sail choice and to the lack of exposed fairings. As far as "The F50s are more unstable than the AC75" is concerned- The AC75 would tip over at the dock without the right precautions. It would be hard-to-impossible to reasonably compare their stability in the context you're suggesting until after the AC75's have been used in an actual regatta and the teams are put into boat handling situations outside of their practiced maneuvers sailing around the course by themselves.
  3. atwinda

    Team NYYC

    The Auckland web cam still shows the boat shrink wrapped next to the shed which is still under construction...
  4. atwinda

    Team NYYC

    Backup plan.. incase you snap your good boat in half. I believe that ETNZ shipped the decommissioned AC72 B1 hulls and components to SF, but I could easily be incorrect on that one.
  5. atwinda

    INEOS Team GB

  6. atwinda

    Stars and Stripes Team USA is gone

    promising, but not long enough. google says the typical parking space is 9 feet wide, so even then those are 10' wide spaces, it's around 10' short.
  7. atwinda

    Team NYYC

    And obviously the question to your competely off base question is, No. They don't. Nor do any of the other teams. So what's your point?
  8. atwinda

    Team NYYC

    God job! You finally answered! I mean it's only taken you three posts to spew absolute bull shit and make wild false assertions, but don't let the real world get in your way, right? As for your answer on the other hand - "Yes. No question. Watch the video". I haven't seen a video of AM capsizing their AC75. Care to share?
  9. atwinda

    Team NYYC

    Internesting statement from someone who hasn't been able to answer a simple question.
  10. atwinda

    Team NYYC

    I asked you a question- you didn't answer. Plain and simple. I did not "spin" anything. Answer the question. As far as your guarantee goes- ETNZ has already proven that they can still win the America's Cup after their AC50 was on it's side. FACT.
  11. atwinda

    Team NYYC

    I encourage you to review the original question and hint. I think you'll find that I accounted for both of your points.
  12. atwinda

    Team NYYC

    Some teams also 100% know their race boat can survive a capsize.
  13. atwinda

    Team NYYC

    Simple question- Do American Magic know, without doubt, that their first AC75 can survive a capsize directly comparable to ETNZ's AC75? (Here is a hint- calculations, assumptions, indirect comparisons, etc... are irrelevant in answering that question.)
  14. atwinda

    INEOS Team GB

    what'ya know, someone already did... and they even got the color scheme and nostrils right.
  15. atwinda

    INEOS Team GB

    Those designers need to be congratulated for not stopping while they were so far ahead in the ugliest boat category. Seriously though- they managed to take the only surface on that heap of junk that looked remotely nice (the bottom) and beat it with the same ugly stick as the rest of the boat. Truly impressive. I have to question the expectation of that mod. If the goal was to get close to the bustles on ETNZ or LR, then this is the equalivent of duct taping on a cardboard spoiler to a Reliant Robin (it was the only british tripod that came to mind, also fittingly ugly and slow) and expecting to see performance improvements.
  16. atwinda

    Team NYYC

    DeVos IS Quantum. The only way Q could get their rags on Grand Prix programs was to start building boats. It's sort of worked for them in the TP52 fleet... they have to throw pros at the other teams to get results on the non-factory boats. https://www.mlive.com/news/grand-rapids/index.ssf/2017/01/amway_heirs_international_win.html
  17. atwinda

    Team NYYC

    option D: None of the above spreaders are attached via conventional means, and rotate with the rig. rotating rig means that side bend is really your fore/aft bend (luff curve) and thus why they'd want to control it via diamonds/jack stays... rig bends sideways, and is limited by the leeward diamond/jack stay... c-scow rotating mast as evidence. The reason you don't see spreaders on the multihull rotating rigs, is that they are brick shit houses. very stiff. Think Alinghi's 100'er for other examples of rotating mast with spreaders.
  18. atwinda

    Team NYYC

    the batten... spar? near the foot of the main is... unusual... to say the least. The horizontal line between the sets of tell-tales is almost certainly a join in the outer taffeta (falsely painted to match 3Di's appearance rather than adding any real benefit (other than off-anticipated-axis loading, aka "we don't know, but taffeta makes it ok-ish") - while T-Hutch and Dean are in this for real, the backing money is in this to promote a product) skin, and not a batten or shaping rib. The issue I see with the diagram of the D-spare and twin luff sail as illustrated above (with the opposite skin joining around 1/4-1/3 of the cord), is that there is no sensible way to incorporate battens- unless the batten and car travel down a center groove making them unbiased per tack. This all sounds like a lot of added weight- which the Q team will already be behind the eight-ball on with the other teams siding in the 3Di camp, and therefore unlikely to be a production solution. More likely, the over-sized batten/spar near the foot, is a camber inducer of some sort, with the purchases going towards the main boom, driving camber into the lower section of the main twin skins. When you think of a wing sail, the foil section shape is unchanged tack-to-tack. rather the pivot points, and rotation create the camber, and the surface shape is not 2d sail smooth as depicted in the illustration. Camber and twist are induced via controls limiting or invoking pivot in face of force applied to the particular section of the wing. I would expect any real attempt of twin skin sail setups to be true uniformly twin skin from luff to leech with some camber and twist control battens or otherwise integrated throughout the span.
  19. atwinda

    Larry's AC50 Circus

    I posted the same yesterday, but it was overrun with useless forum arguments about... going out on top???
  20. atwinda

    Larry's AC50 Circus

    FWIW- Both Team Oracle USA and Team Softbank Japan have updated their facebook names or web site addresses in the last two days. The URL on ex Softbank Japan (now Japan SailGP) is https://sailgp.com it asks for a login though.. no public content. Both Oracle and Japan reference "SailGP" in their handles now.
  21. atwinda

    Radio Control Multihulls

    luckily no fried electronics- center pod remained dry throughout the weekend. The hulls on the other hand likely have micro holes as a side effect from novice vacuum bagging / boat building. electronic issues solely related to range. All other systems checked out. So I'll seal 'er up and get a new receiver and keep at it. Likely end up with a arduino foil control system (already in development) should I need to actively control the foils.
  22. atwinda

    Radio Control Multihulls

    in an attempt to get this back on topic: It sails... it also has foil boards (not shown here).. but the hulls were not sealed well enough and it needs some electronics upgrades...
  23. atwinda

    J/111 Goes Sailing...

    SDYC results page relevant line: Place: 10 #: USA 3 Boat Name: J/111 Owner: Jeff Brown Fleet: 2 Boat Type: J/111 Race 1 Fleet/Overall: 5/16 Race 2 Fleet/Overall: 1/9 Race 3 Fleet/Overall: / Total Overall:25