Luna Rossa Challenge. AC 36

jaysper

jaysper

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buckdouger said:
I might be misunderstanding you, but Luna Rossa B1 was the first boat with a skeg. They commented that they'd made the skeg on B2 deeper, not much by the looks of it, and added the thin 'blade' which could be replicated on B1. 

The foredeck has a larger radius along the sheerline on B2 v B1. Can't think of many other external hull differences, although there are likely unnoticed ones. 

It's all a stretch obviously, but the similarity bt B1 and B2 opens the door to a play which would be incredible to pull off, as far as cup deceptions in plain sight go. 
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Sorry yeah, I was talking about the blade.

Also, didn't RG indicate yesterday that they also might have lengthened the skeg.

What your suggesting is feasible, but I just don't see it.

Unless AM have already peaked (highly doubtful) I expect them to challenge.

 
A

atwinda

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They have exactly the same chance of using B1 as the other teams- ZERO.

While the hull shapes might be similar, there is no chance the internal structure or layup schedule is the same. They would essentially be throwing away any gained performance benefits from learning how to build an AC75- and out of all the teams, they had the most structural problems (in the public domain) with their B1.

The B1s would serve as better spectator platforms for the shore crew than they ever would as a competitor against another team's B2 (outside of the slight possibility that you break your B2 in 1/2 a day before the match). Just think of all the beer they could keep in those crew trenches.

 
nav

nav

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click for big...

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nav

nav

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buckdouger said:
I was surprised in the 360 video about two things:

The helms console looked more advanced than in the Christmas cup on B2

The grinders were way better shielded from the wind. 

Would be amazing if they were pulling a huge fake on everyone.

View attachment 417767
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As far as I can see that is all shot in Sardinia - So B1 (note also no cut-out from deck above the winch in your screen grab).

Interestingly the shots of the crew on the Starboard side had them all much higher.

 
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barfy

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Maybe b2 is b1, a clever swap leaving a total weapon in the shed that was developed at home then gift wrapped for the final show.

 
Stingray~

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jaysper

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Xlot said:
Good Checco Bruni interview on FareVela, well worth a G-tran:

https://farevela.net/2020/12/30/americas-cup-francesco-bruni-stiamo-crescendo-e-gli-ac75-sono-barche-eccezionali-intervista-al-timoniere-di-luna-rossa/
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Nice interview, thanks champ.

Even with the Translish, it is still pretty easy to get the gist.

So looks like we have once and all confirmation that only LR and ETNZ still have an extra set of foils up their sleeves.

I am completely unsurprised that he is knackered after a day on the helm having seen Deano wrestling with the wheel during the ACWS.

 
B

buckdouger

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nav said:
As far as I can see that is all shot in Sardinia - So B1 (note also no cut-out from deck above the winch in your screen grab).

Interestingly the shots of the crew on the Starboard side had them all much higher.
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Yes, agreed this is B1, seems strange to have 'regressed' in these two respects on B2. The crew thing may just be kneeling vs not. 

 
Zaal

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I think B2 is definitely Plan A. No doubt about it. If we apply Occam razor, they were happy enough about B1 to consider it a feasible replacement should something happens to B2, so they brought it to NZ. Listening to MS interviews, he often says they're ready to sail also with B1, and that AC75 are near impossible to target for all around conditions. In another older interview, talking about previews Cup editions, he said they lost to ETNZ in 2007 (Valencia) in the LV Finals 'cause the boat was out of the optimal wind range. 

So I was just wondering, since they targeted B2 for medium/light breeze, if they could target B1 for the very higher wind range  just in case. I don't think this is likely, it's more a Pindaric flight of fantasy. Still, stranger things happened in the Cup history 

 
Zaal

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Now, back to reality. Checco Bruni interview by Michele Tognozzi for FareVela

- They had 3 training sessions after Christmas with strong winds. That's good, since they have to improve in the higher wind range. They made small mods to everything: hull, sails, foils, rudder. 

- They tested with and without backstays configurations 

- He didn't think AC75 would be so fast when he saw the computer models. He's impressed by AC75 performances, specially upwind. He thinks this new class surpassed the AC50. 

- The double helm configuration helps a lot the maneuvering, they have total control of the boat. There are some downsides, but not in the pre-start. They can tack or gybe immediately, faster, and without giving any hint of it to the opponent since Pietro Sibello - the mainsail trimmer -  doesn't swap side in the pre-start, he stays in the same position. 

- Downside of the double helm configuration are that you have to focus on something completely different after the tack/gybe and that in these 3 years they stayed at the helm half the time they normally would. He's happy about this anyway, 'cause confrontation is always good for improving performances, and they really helped each other. 

- It's quite impossible to have a "real" tactician on AC75s. In order to have  a good view of the race, a tactician must change side, and probably has also a grinding role. If he doesn't change side, he can see only 50% of the race, when he's at the windward side. Ineos has Giles Scott in that role, while AM has TH, but according to the radio comm, he doesn't see a lot when he's leeward. On LR, whoever is at the helm in that moment call the tactics.

- Umpires can give 2 or 3 penalties all at once if they saw fit, like if someone go over a boundary to go straight to the top mark doing less maneuvers. 

- He doesn't know about ETNZ touching 56 knots of speed. They're fast for sure, and they did a good job performing well also in light wind conditions

- AM is strong in medium/high wind conditions, he thinks they'll try to better their performances in light air. Anyway, LR and AM speed were very similar. 

- Ineos team is doing a lot of mods to the boat: foils, hull, systems. He's sure they'll be ready for the Prada Cup.

- They'll show LR last set of foil soon. 

- Checco is a little bit tired after a seven hours sailing session, but really enthusiastic about helming such a beast. The real heroes after so many hours of training, he adds, were the grinders 

 
Rennmaus

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8 hours ago, Zaal said:

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Long gone are the days where you would know that a maneuver is imminent because the cigarettes flew overboard. 

Thanks a lot @Zaal for your great links and translations. 

 
nav

nav

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Forget the 56knot report. It was a throw away comment/wishful thinking - given in km/h even. Hardly authoritative or relevant, unless they start doing blast reaches just for fun.

 
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