34th America's Cup: multihulls!

34th AC

JNavas video LR foiling upwind: http://www.youtube.com/watch?v=socp9UPydHA#t=69

 

At least they could be called "races" this time because two boats managed to finish.
But another two dull blowouts, IMO.
And I'm not the only one who is bored by the lack of tension...

"Dean what to you do to prepare for race two in 20 minutes."
"Hopefully stay awake."

 

No matter how you polish it, it's still a turd

 

This thread is in the 'multihulls' department, I would assume folks posting here are doing so because they have an interest in all things multihull.
Sadly, some folks just chirp in to create friction, and have no interest in multihulls at all, and are stomping their feet in childish tantrum because the boat type of their preference has been sidelined from the AC this time around.

Gary, We just need to start ignoring folks comments that are trying to drag the discussion into argument. By replying to them, you give them the opportunity to reply. By ignoring them, they can only keep posting snarky comments, and pretty soon they will be on everyone's list of folks opinions to just pass over without reading.
Doug has successfully done this in the AC schedule thread - Leo and others are trying to do there what they do everywhere, and Doug just ignores them and keeps posting the race times etc, which is what the thread is about.
I don't know if you can place people on your 'ignore' list, such that you won't even see their posts, but I'm going to have a look see now if it's possible.
Leo is top of my list.

 

Not true. I dont care Mono or Multi.

I do care that the AC has been ruined...no match racing....because the choice of boats was inappropriate for world class match racing.

The thread says AMERICAS CUP.

 

Correct. Not 'Match Racing Cup'

Lots of good tactical keelboat racing happening in the WMRT with top sailors, would it hurt too much to change channels ?

 

There are others who find the events so far as pretty boring. If we weren't
critical this would just be a fangirls thread about how wonderful the event is.
(Doug seems unable to be critical of anything which, sadly, makes him seem
like a paid shill.) BTW, there are many on Sailing Anarchy who are far more
scathing about the events so far.

To put me on your "ignore" list, just click on my name. Remember to save the list
before you exit from the page.

You seem to have a reading and comprehension problem. For example,
I am not against multihulls or foilers. In fact I have described the boats as
"beautiful", the venue as "spectacular" and the technology as fascinating".
The races are, IMO, dull and the failures laughable, coming as they do from
supposedly top professionals.

 

The results speak failure. No competitors, no viewers.

You cant fool sailors by substituting gimmicky gee whizz boats for close in match racing.

 

I can't see why the choice of boats made the racing so dull. It could have
been just as boring with mismatched monohulls, or as ludicrous with so
many equipment failures.

Maybe they should have put "Praise Only Please" in the thread title.

 

You're right, Steve, that's why I removed it after a few minutes.
Tiresome fighting trolls, I should know better. Cheers.

 

Looking at the video of the race 3 right now, and I am feeling confused...

I thought that rudder foils provided the downwards force - just like shown here (http://www.boatdesign.net/forums/multihulls/34th-americas-cup-multihulls-34612-55.html#post590900):



but now I am hearing Russel Coutts in that video talking about an upwards force: http://www.youtube.com/watch?feature=player_embedded&v=WIGuw0_lXjc#t=3399

What the hell is going on here...? Is the rudder of an AC72 foiler producing an upwards or a downwards force? He says that only during the bear-aways the rudder gives a down force, but how does it do it if the pitch cannot be changed during the race?

 

May be another choice of courses would had helped ( ? ). I am thinking of many, much shorter legs.

 

^^^

Coutts' presentation of the rudder is about 57 minutes into that video; he says that normally they are providing a little up force, but when the boat goes bow-down as during a bear-away, then the rudder's angle in the water provides needed down-force instead.

Odd that Russell is always so inarticulate when showing people around, in spite of having done it a zillion times, it reminds me of his unintentionally hilarious cake-baking disquisition during AC33.

 

^^^

Though it probably isn't the case that anyone else shares my peculiar sense of humor, Russell's cake-baking disquisition is about four minutes into the audio file on this page: Coutts Speaks Out

lol


...

And by the way, I don't think Matt Sheahan/Yachting World has been quoted yet in this thread, he is one of the best guys writing about the Cup so I want to include his latest article below.

There are surprisingly few people writing well about the Cup at the moment, I don't know why Kimball Livingston has gone silent, or why Ross quit blogging - but at the moment there is hardly any good written comment except by the New Zealand journalists!

Sheahan's point about how the New Zealanders are sailing perfectly is really the gist of why the racing between them and Prada looked mismatched yesterday, and if you don't have any appreciation/interest in how brilliantly ETNZ are handling their boat, then the lack of close contact in the races is of course a disappointment!

 

Daiquirir, as soon as the platform nose dives (around 10 degrees) and the inverted T rudder foils (which are fixed at zero or maybe 1-2 degrees positive; they also are asymmetrical in cross section so the shape provides more lift/less drag than the usual symmetrical foil) when the platform takes on a negative angle, that is when you get down force developed. Normally with the sailing platform level or near level, you get an upward force.
Even at some shallow negative angles of attack, there will still be positive lift developed (asymmetric foils are quite forgiving).
But as soon as the boat grinds to a stop, there is no lift, negative or positive, and rudders will come to surface - and if you're unlucky, kiss your arse goodbye.
Coutts referring to bear away, and especially on the Oracle boats with their normal nose down positioning, definitely get a down force developed.