I know, I know - they aren't catamarns but the sport is still sailing and the technology is pretty wild

Anyone watching this stuff?

360% turns while on foil .... https://www.youtube.com/watch?v=LbWjltQvKcs









Edited by MN3 on Jan 14, 2021 - 09:26 AM.

Sometimes I watch some YT content. Ridiculous what the AC75 are doing. Especially turning on foil without relevant loss of speed seems pretty nice comparing to my 5.0 which nearly slows down to zero when tacking. lol:

I think sailing in commercial shipping still has potential. And this is a major benefit of this pricey hightech boats. The gain of knowledge about moving on water is huge.

You know, we saw the AC evolution to multihulls and we all know that multihulls are shunned by the monohull community. Yes, these AC boats are technically monohulls which the monohull community can now claim... but with their foil outriggers are they really monohulls? I recall an article on the Ft Lauderdale/Key West race where a Corsair 31 crew was smelling the diesel engine used to move a canting keel foil/ballast until they passed the larger mega-million dollar mono. So what are these AC boats using to raise and lower their outrigger foils?
James

Betting electric. high speed jack screws or hydraulic, which could also be run off batteries.

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Chuck C
NACRA 500 Mk2
Hobie 21se (sold)
--

a battery-driven, hydraulic power-unit that supplies the energy to lift and lower the immensely strong - and heavy - foil cant arms. https://www.americascup.com/the-technology

" Foil Cant Systems may only be driven by battery power. Batteries will be supplied. "

https://www.americascup.com/the-technology

Last few AC's the crews grinders were creating hydrophilic pressure and it was stored in a an accumulator if i recall correctly. I am sure Philip or Sam can speak with much more knowledge than I on this. This power was used for everything from raising and lowering the boards to adjusting the sail/wing (and probably a cappuccino machine below deck)

I would guess it is similar for these boats, the grinders are creating the power for sail adjustments but i can't find any hard data on that at this time

The foil cant system is AC one design. Every team gets the same package. The racing from last month revealed the possible Achilles Heel to the AC. There is a schit storm brewing behind the scene. Of all things it started with cant system software updates and some failures. The team that failed wants to blame it on the supplied software, etc., the other teams say if was their own fault with implementation. Could be a legal mess . . . .could . . .

Prada Cup (AC) racing starts tomorrow.

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Philip
--

WOW
Team America had a rough day







https://www.facebook.com/…videos/3640653722694670/

Yep, that thing was completely out of the water!!!

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Marty
1984 Hobie 16 Redline Yellow Nationals, "Yellow Fever"
Opelika, Al / Lake Martin
--

If I understood correctly, there are two backstays, the windward works and the leeward is eased? And they have to be set at each tack, real quick?

Andinista

If I understood correctly, there are two backstays, the windward works and the leeward is eased? And they have to be set at each tack, real quick?

Yes - one of the videos i saw they were saying they did not release the leaward one and that was the actual cause of the porpoising and capsize


https://www.youtube.com/watch?v=ah5V8RHE1_Y



Edited by MN3 on Jan 18, 2021 - 11:11 AM.

If you want the facts watch the post race press conference from Terry Hutchinson. He is the skipper and team executive director. He addressed the "leeward runner" theory and completely debunked it.

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Philip
--

P.M.

If you want the facts watch the post race press conference from Terry Hutchinson. He is the skipper and team executive director. He addressed the "leeward runner" theory and completely debunked it.

Thanks for the tip (to view the Presser) - https://www.youtube.com/watch?v=4-yvEmEqdBc

relevant discussion starts around 3:50

Actual statement about the backstay circa the 6:00 mark
"I haven't looked completely at the data to verify the runner (backstay) was maxed eased but I would also say that wasn't the reason"

seems to me he is saying" back stay doesn't seem to be the issue, Traveled all the way out was (potentially) bad, the running backstay was (maxed) eased but then the main was (max) eased which loaded up that backstay, the wind was 12 knots before the move, then 18 and jumped to 24 quickly"


i always travel out fully when I gybe, and the only time i have capsized in a heavy air gybe (and ejected through my sail) was the time i didn't travel out. But i do typically have my hand on the main (between the upper and lower block) and manually move the traveler (IF i can)



Edited by MN3 on Jan 18, 2021 - 06:59 PM.

Andinista

If I understood correctly, there are two backstays, the windward works and the leeward is eased? And they have to be set at each tack, real quick?

To be clear: i was replying to the 2 backstays - not sure how / when they are set - he does mention they are "pre-set" but i think he is talking about the setting / amount of tension

If you get nothing else, they are scrapping "Defiant" to get the control system for the forward cant system to install into "Patriot". The control systems were a total loss. 16:10 of the video linked above. https://youtu.be/4-yvEmEqdBc



Edited by tominpa on Jan 19, 2021 - 12:08 AM.

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Tom
NACRA 5.7 (1984 Sail 181)
Pennsylvania
--

So... ya think they are gonna make it to the big show???

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Marty
1984 Hobie 16 Redline Yellow Nationals, "Yellow Fever"
Opelika, Al / Lake Martin
--

https://www.usnews.com/ne…fter-rapid-repairs-in-nz
WELLINGTON, New Zealand (AP) — U.S. challenger American Magic returned its racing yacht Patriot to the water Wednesday just 10 days after a dramatic capsize threatened to ends its involvement in the America’s Cup in New Zealand.

Patriot was slowly lowered into the water at the team's Auckland base and was expected to sail later in the day to begin systems checks — the first step to a full return to racing.

On its relaunch, Patriot had a new emblem over the area of the bow which had been holed — crossed band aids bearing the Italian, British and New Zealand flags and the message: “thankyou."

American Magic tweeted a picture of the new emblem and said “after 9 days of round-the-clock effort, and the massive support of so many here in Auckland, back home and around the world, PATRIOT is back in her natural element.”

“The Prada Cup racecourse awaits her on Friday.”

An American Magic spokesperson told reporters "the band-aid graphic with the three flags that covers the repair is an acknowledgement from all of us within the American Magic team of the invaluable assistance received from each of the other three syndicates.”

The 75-foot Patriot has to pass inspection by the Cup measurement committee late Wednesday in order to race against Italian challenger Luna Rossa in the best-of-seven race challenger series semifinals which begin Friday.

The winner of the series will progress to the Prada Cup final where it will meet Britian’s INEOS Team UK. The loser will be out of the regatta.

American Magic’s shore team, assisted by boat builders from America’s Cup-holder Team New Zealand, have been working around the clock since the capsize occurred to repair extensive damage, including a big hole at the bow.

The U.S. yacht sustained internal and external damage and its complex electronic systems have had to be replaced. Patriot’s hydraulics are sealed and avoided the worst of the damage.

The achievement of American Magic in repairing Patriot on such a tight deadline has amazed rival teams and sailing experts. Patriot came close to sinking and was only saved by the swift response of the U.S. team and rivals who rushed to its assistance.

Ben Ainslie, skipper of the British team, wrote in a weekly newspaper column that he doubted his team could have overcome such a setback.

“I asked one of our senior engineers whether we would have been able to make it back for the semifinals had the same thing happened to us and he said ‘no chance,’" Ainslie said.

American Magic mainsail trimmer Paul Goodison told New Zealand media organization NZME the U.S. team hopes to “carry on where we left off” as Patriot is re-launched.

“We’re reassured by (designer) Silvio (Arrivabene) and the guys that the boat will be in a similar state,” Goodison said.

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Tom
NACRA 5.7 (1984 Sail 181)
Pennsylvania
--

The "band-aid" shout out was really cool. The boat is also called "Patriot 2.0"
I read today that they had another incident when practicing today where the boat kind of went bow up again and crashed down again but sustained no damage. Really hope they get it all sorted out for Friday's race.



Edited by martyr on Jan 27, 2021 - 09:14 PM.

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Marty
1984 Hobie 16 Redline Yellow Nationals, "Yellow Fever"
Opelika, Al / Lake Martin
--

that doesn't sound very encouraging. I'll follow as best we can here in the U.S. where the only sports event seems to be the Super Bowl. Not nearly as interesting.

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Tom
NACRA 5.7 (1984 Sail 181)
Pennsylvania
--

Lets hope these mono sailors know enough to run maximum size sails on low/no wind days. they lost 2 races because they used undersized sails. Read our forums and even newbies know better, I watched those races and was astonished and dismayed.

yes, these teams should be taking advice from the people in forums



Edited by MN3 on Jan 28, 2021 - 05:00 PM.

tominpa

I'll follow as best we can here in the U.S. where the only sports event seems to be the Super Bowl.

Youtube.

sm

Well from what I have read, American Magic is done. ☹

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Marty
1984 Hobie 16 Redline Yellow Nationals, "Yellow Fever"
Opelika, Al / Lake Martin
--

martyr

Well from what I have read, American Magic is done. ☹

Yes they are out.

American Magic out of the America's Cup as Luna Rossa wins

they lost a must win race
they did not win the start and were behind 100 meters pretty early

i think it was about 1/4 of the way through the race when they lost the ability to use a dagger (articulating foil) -

that was the dirt on top of the coffin (the nail in the coffin was when they lost the start and were behind a 100m.) they would have needed the Italians to demast, explode or sink to have any chance

not 100% sure of the rules but they were awarded a penalty shortly after the foil wouldn't respond the first time (either for going out of bounds or having both foils down ... really not sure, i had zoned out by then) they regained the use of the foil but it quickly failed again and they got a second penalty

Commentators said a few interesting things. 1 - this boat was under water a few days ago - the fact they even came back was amazing. 2 while making the repairs the other teams increased speed by 10%.

Let's not forget that Luna Rossa's captin is James Spithill who has been in 4 other AC's and won 3 (if i recall correctly)


next up: Prada Cup final against INEOS Team UK vs Italia's Luna Rossa - winner goes to the AC against NZ



Edited by MN3 on Jan 30, 2021 - 11:20 AM.

O K call me silly jealous and not knowlegable vis a vis these high tech flying machines/ technical failures exonerate skipper but read the wind/ i remember article in the hobie magazine just after Ted Turner after won Americas Cup, he buys a hobie 16 and attempts to race and finishes last! But im sure he read the wind

To be totally dependent on electromechanical systems to operate the boat but not have those systems able to withstand total immersion seems like a basic design flaw.

--
'82 Super Cat 15
Hull #315
Virginia
Previously owned: '70 H14, '79 H16, '68 Sailmaster 26, '85 H14T
--

There was little or no wind, races were shortened to account for low wind conditions, larger sails were available . Ted Turner after winning the Americas Cup bought a Hobie 16 and practiced and entered a regatta, but finished last. Perhaps Ted should have read the monthly Hobie magazine(no internet then), or read a few books written by cat sailors? I always check the 3 wind apps on my iphone when I rig and my weather sites BEFORE i go to my cat for safety and to determine what sails I will utilize. In Dart 18 discussions on this site I bring up the small size of Dart 18 sails and that I run up a Prindle 16 or Hobie 16 jib on low wind days. THE NEW YORK YAUGHT CLUB WOULD NEVER visit this site but they should for a myriad of reasons, but a little humor is OK

Total immersion seems like a basic design flaw.

jack108136

Total immersion seems like a basic design flaw.

More of an operational flaw.

--
'82 Super Cat 15
Hull #315
Virginia
Previously owned: '70 H14, '79 H16, '68 Sailmaster 26, '85 H14T
--

I think all teams that don't make it to the AC final should have a crash up derby

As of now 3/12/21 the races are tied at 3 apiece. NZ seems to be a little faster than the Italians, but it really all comes down to the prestarts. It appears that whoever wins the start will, more than likely, win the overall race.

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Marty
1984 Hobie 16 Redline Yellow Nationals, "Yellow Fever"
Opelika, Al / Lake Martin
--

No races today due to light winds. They will try again tomorrow which will be Monday in New Zealand.

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Marty
1984 Hobie 16 Redline Yellow Nationals, "Yellow Fever"
Opelika, Al / Lake Martin
--

I was wondering why I couldn't find anything.

Congratulations to Team New Zealand and Te Rehutai for defending/winning the America's Cup!!!

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Marty
1984 Hobie 16 Redline Yellow Nationals, "Yellow Fever"
Opelika, Al / Lake Martin
--