Americas Cup
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some interesting comments about the foils ainsle was using pre xmas, how they had noticeable rivets and ridges compared to these ones which are perfectly smooth (as you expect), sandbagging pre xmas with deliberately shit foils?
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@Kiwiwomble said in Americas Cup:
some interesting comments about the foils ainsle was using pre xmas, how they had noticeable rivets and ridges compared to these ones which are perfectly smooth (as you expect), sandbagging pre xmas with deliberately shit foils?
I don't really see the see the point. It is difficult to improve if you aren't already trying as hard as you can. They may have got their wind strength forecasting a bit off.
Perhaps they thought turbulent boundary layers were the way to go versus lamina flow with the foils. Might have given more stability in higher wind speeds. I'm better on aerodynamics than hydro but that might be a reason. They are dealing with the inviscid flow over the foil (viscosity will be different in water than air of course).
This will help you work it out:
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sailing mate explained that if the others don't feel as threatened then they wont have the same drive to develop something new, no reason to risk it, just consolidate on what you have
baller move it was true, gamble that what your kept back is actually as good as you think it is
its all the theatre of the AC isn't it
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@Kiwiwomble said in Americas Cup:
its all the theatre of the AC isn't it
Sure is. They were probably experimenting earlier, and failed dismally, rather than sand-bagging, but we will never know. They are such complex boats every change affects another component that affects another, etc, etc.
It will be interesting to see how they go in a slightly lighter breeze again. 6 to 20 kts is going to be a difficult range for all of them to be fast in (comparitively).
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Didn't team GBR say they pretty much rebuilt it over the break?
There was also a comment from one of the comments before Xmas about the 'package' they were using.
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@taniwharugby said in Americas Cup:
Didn't team GBR say they pretty much rebuilt it over the break?
Ainslie said himself after race 1 that just about everything apart from the hull (for obvious reasons) had been changed.
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plenty of time with both boats off thier foils out there, but Luna Rossa took it comfortably, although were a couple of lead changes on leg 2 of 4
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So Team USA 0/3 and Ineos 3/3.
Alot of floating about in the races today.
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@taniwharugby said in Americas Cup:
Alot of floating about in the races today.
Was quite amusing. In the effort to get back up on the foils they had zero or even negative VMG at times. Unless they can create an apparent wind they are tubs. Still think they are cool though.
Six knots wind speed seems to have been set a bit low for "racing".
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@Snowy said in Americas Cup:
@taniwharugby said in Americas Cup:
Alot of floating about in the races today.
Was quite amusing. In the effort to get back up on the foils they had zero or even negative VMG at times. Unless they can create an apparent wind they are tubs. Still think they are cool though.
Six knots wind speed seems to have been set a bit low for "racing".
Sounds like the AC in Fremantle, with 12m yachts when the winds weren't in
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@canefan said in Americas Cup:
@Snowy said in Americas Cup:
@taniwharugby said in Americas Cup:
Alot of floating about in the races today.
Was quite amusing. In the effort to get back up on the foils they had zero or even negative VMG at times. Unless they can create an apparent wind they are tubs. Still think they are cool though.
Six knots wind speed seems to have been set a bit low for "racing".
Sounds like the AC in Fremantle, with 12m yachts when the winds weren't in
A bit different really, due to the foiling aspect. These things are basically stationary as displacement boats, until they can achieve enough power to foil then they are rocket ships. The 12m didn't have that range of speed. These things are on or off, 12m were pretty conventional, finding an extra 3kts of pressure was good, but not give you another 30 kts. The percentage comparison is enormous.
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@Snowy said in Americas Cup:
@canefan said in Americas Cup:
@Snowy said in Americas Cup:
@taniwharugby said in Americas Cup:
Alot of floating about in the races today.
Was quite amusing. In the effort to get back up on the foils they had zero or even negative VMG at times. Unless they can create an apparent wind they are tubs. Still think they are cool though.
Six knots wind speed seems to have been set a bit low for "racing".
Sounds like the AC in Fremantle, with 12m yachts when the winds weren't in
A bit different really, due to the foiling aspect. These things are basically stationary as displacement boats, until they can achieve enough power to foil then they are rocket ships. The 12m didn't have that range of speed. These things are on or off, 12m were pretty conventional, finding an extra 3kts of pressure was good, but not give you another 30 kts. The percentage comparison is enormous.
I was just joking about the slow pace in light or no wind
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Critical factor seems to be the windspeed required to get up. Reduce that by even a little and you will get a jump.
If light winds aren't a factor then it is sailing ability and boat speed.
Have to admit that Ainslie looks to be the top skipper at the starts. -
@Crucial said in Americas Cup:
Critical factor seems to be the windspeed required to get up. Reduce that by even a little and you will get a jump.
If light winds aren't a factor then it is sailing ability and boat speed.
Have to admit that Ainslie looks to be the top skipper at the starts.Yeah that was what I was getting at with the 6 kt limit. Maybe our design guys reckon we can do that and that is why it was set there. Maybe Prada do too as challenger of record.
We haven't seen any races up to 20kt yet I don't think, so hard to say about comment two. Sailing ability comes into all conditions really and boat speed will depend on foil design for lighter or heavier air. Instability at really high speeds, risk of capsize, cartwheel, pitch pole against a displacement "race". These things have a tiny skeg (rather than keel) which the foils have to act as, otherwise they can just go sideways in light air.
Ainslie definitely the gun at the start.
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that was a crazy end to that leg!!
And now race abandoned, due to a big wind shift?
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@taniwharugby amazing. Can't remember such a massive shift... Sailing away from the marks is weird
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So Team GB are the real deal, both boats moving in excess of 40kn (think top I saw was 43kn) in this one and the one that was abandoned earlier.
Team USA now the lame duck with no wins yet.
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@taniwharugby said in Americas Cup:
So Team GB are the real deal, both boats moving in excess of 40kn (think top I saw was 43kn) in this one and the one that was abandoned earlier.
Team USA now the lame duck with no wins yet.
Poor Deano
