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AC 45


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#1 Doug Lord

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Posted 25 February 2012 - 02:49 AM

Check this out: http://www.xssailing.com/

pix from site- windward "L" foil-

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#2 Surf City Racing

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Posted 25 February 2012 - 05:05 AM

Word!

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#3 juniordave nz

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Posted 25 February 2012 - 06:50 AM

So under the surrogate boat rule, surely this sort of thing shouldn't be allowed. Because that boats no longer an AC45 under a one design rule.
Any care to explain how this is legal?

#4 Multihauler

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Posted 25 February 2012 - 07:06 AM

So under the surrogate boat rule, surely this sort of thing shouldn't be allowed. Because that boats no longer an AC45 under a one design rule.
Any care to explain how this is legal?

I believe that these modifications are allowed under......"The Golden Rule". ;)


-MH

#5 rule69

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Posted 25 February 2012 - 07:08 AM

Fascinating. I wonder how they control the amount of lift? But maybe the rules bit will get more play over in ACAnarchy?

#6 Keith

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Posted 25 February 2012 - 07:09 AM


So under the surrogate boat rule, surely this sort of thing shouldn't be allowed. Because that boats no longer an AC45 under a one design rule.
Any care to explain how this is legal?

I believe that these modifications are allowed under......"The Golden Rule". ;)


-MH


Ahhh yes... well put B)

#7 sailingkid

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Posted 25 February 2012 - 10:09 AM

I just noticed the centreboard cases are on the other side of the beam compared to normal, which is faily decent surgery. Would they just fill in the new cases with plugs for ac45 events or are these different boats all together to the ac 45's used in the world series? (sorry kinda outta the loop)

#8 juniordave nz

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Posted 25 February 2012 - 10:16 AM

I believe oracle own 4 AC45's. So these aren't the ones that do the world series

#9 furling

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Posted 25 February 2012 - 10:33 AM

Judging by the amount of wires holding the foils down they are expecting a lot of lift from them, no t foils on the rudders yet.

#10 seis

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Posted 25 February 2012 - 10:59 AM



So under the surrogate boat rule, surely this sort of thing shouldn't be allowed. Because that boats no longer an AC45 under a one design rule.
Any care to explain how this is legal?

I believe that these modifications are allowed under......"The Golden Rule". ;)


-MH


Ahhh yes... well put B)


It's good to know a bit about rules before talking about



Surrogate Yacht means any catamaran yacht that is greater than 10 meters LOA,
except that an AC45 Yacht whose "platform" (external shape of the hulls, and the
crossbeams) comply with the AC45 Class Rule shall not be a Surrogate Yacht. For
the avoidance of doubt, daggerboard cases may be modified, and for the purposes of
this definition any such modification is not deemed to change the external shape of
the hull.


They can modify the wing, daggerboard, rudders, rigging and running gear as long as they don't change the shape of the hulls or alter the crossbeams. However they are then no longer a class AC45 and cannot race in the ACWS.

Oracle have 4 AC45's. The 2 originals they will keep as class boats and the other 2 they will use as test platforms.



#11 Doug Lord

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Posted 25 February 2012 - 01:51 PM

Here are two AC 45's testing curved lifting foils:

pix from here Nov. 2011- http://voilemulticoques.wordpress.com/

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#12 Surf City Racing

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Posted 25 February 2012 - 02:22 PM

When I was at the Oracle Team Base the other day, I snapped this:

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#13 Tony-F18

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Posted 25 February 2012 - 02:30 PM

I would take stuff like that with a grain of salt.

Are those wings the same as on the "real" AC45s? Or are they not (yet?) testing new configurations?

#14 Surf City Racing

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Posted 25 February 2012 - 02:34 PM

I would take stuff like that with a grain of salt.


Why?

#15 maxmini

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Posted 25 February 2012 - 05:40 PM


I would take stuff like that with a grain of salt.


Why?


Its too obvious. If it were important you would not have seen it.

#16 Tony-F18

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Posted 25 February 2012 - 05:45 PM


I would take stuff like that with a grain of salt.


Why?

A whiteboard in the middle of a hanger? :ph34r:

#17 Surf City Racing

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Posted 25 February 2012 - 05:56 PM



I would take stuff like that with a grain of salt.


Why?

A whiteboard in the middle of a hanger? :ph34r:


...and they don't have a track record of modifying any other foils either. Yeah, you're probably right.

#18 Surf City Racing

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Posted 25 February 2012 - 06:02 PM

A whiteboard in the middle of a hanger the Oracle Racing Headquarters, about 20 feet from the lamination area where they're building an AC72? :ph34r:


Fixed it for you.

Turn around, you see this:

Posted Image

Open the door, you see this:

Posted Image

#19 Rudder Madness

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Posted 25 February 2012 - 06:38 PM

Looks like they are just doing research on different foiling designs for when they build the big boat. Obviously the 75 foot cats are going to have some sort of foiling center boards.

#20 MSA

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Posted 26 February 2012 - 10:16 AM

So Oracle invented the ACWS and 45's to sell to other people to pay for their own surrogate boats.

Also why did Team NZ buy the SL 33 and not more AC45's and Mod them?

#21 Scarecrow

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Posted 26 February 2012 - 10:48 AM

Price

#22 MSA

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Posted 27 February 2012 - 04:51 AM

But surely it would lead to a greater understanding and output of Data..

#23 jimbo_hobie16

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Posted 29 February 2012 - 09:57 AM

So Oracle invented the ACWS and 45's to sell to other people to pay for their own surrogate boats.

Also why did Team NZ buy the SL 33 and not more AC45's and Mod them?


SL costs 100-200G AC45 costs close to 1M...

#24 MSA

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Posted 29 February 2012 - 12:10 PM

OK surely an AC45 is not $1m.. I havent been following the boat cost at all but that is ridiculous. I presume your $1m would be including your entry etc etc etc to the the ACWS..

SO basically your saying L.E has spent $2m on 2 surrogate boats when TNZ has spent $400k.. That sounds completely wrong to me.. Happy to be proven wrong.

#25 kiwi_jon

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Posted 29 February 2012 - 12:11 PM

But surely it would lead to a greater understanding and output of Data..


What data would TNZ get from an AC45 that they can't get from the SL-33's?

#26 MSA

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Posted 29 February 2012 - 12:16 PM

For a start they would have a higher level datum point. The AC45's are obviously going to be at a higher percentage of Max speed more often then an SL33 that is just 2 boat tuning. The Datum point would also always be rising as they have a great field of boats and competition to compete and learn from.
They would use ACWS data as a Datum point to compare to changes in speed, angle, leeway etc etc.

#27 F-18 5150

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Posted 29 February 2012 - 08:04 PM

Want a set of those fancy foils for your cat.
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