Monster tri headed for San Diego - Page 3

Merlin Hawaii · 29-09-2008, 18:15

Quote:

Originally Posted by David M

Why would they want to increase the wetted surface area per amount of volume with a hard chine as opposed to a parabolic cross section?

I think that in the previous pic, what appears to be a hard chine is actually a reflective illusion.

The hulls are clear high gloss with the carbon exposed

And I believe that the amas actually do have a soft chine flattened ellipical bottom

Randall · 29-09-2008, 19:22

great looking boat but it looks like the courts have decided it is not going to sail. we shall see.

cat man do · 29-09-2008, 20:36

Quote:

Originally Posted by Nordic cat

Some of the big French tris use a flared chine to push the waves away from the hull sides to bring down the secondary drag this creates as well. See the picture showing the hull shape on Idec, the current singlehanded round the world record holder with Francois Joyon at the helm.

Alan

Check the hull shape on my 20 year old hull design

Nothing new there

Dave

DtM · 30-09-2008, 17:50

Hey Merlin, no worries.

daniel

w42 · 30-09-2008, 18:44

Quote:

Originally Posted by Merlin Hawaii

I think that in the previous pic, what appears to be a hard chine is actually a reflective illusion.

The hulls are clear high gloss with the carbon exposed

And I believe that the amas actually do have a soft chine flattened ellipical bottom

Yes, no hard chines. As for paint, it is painted black/white forward of the mast and forward aka. The rest is clear coated.

Rumours are they may try for the sailing speed record. After the fate of the next AC is determined by the courts.

-the troll

S/V Antares · 30-09-2008, 19:16

I once rode on a Dick Newick Tri at 20 + knots and it had a harmonic "Howl" That made my neck hair stiff and my ---- pucker. I wonder how this magnificent craft "Hums"... Wow!

w42 · 30-09-2008, 19:24

Quote:

Originally Posted by S/V Antares

I once rode on a Dick Newick Tri at 20 + knots and it had a harmonic "Howl" That made my neck hair stiff and my ---- pucker. I wonder how this magnificent craft "Hums"... Wow!

The amazing thing with the BOR90 is the "twist" the platform experiences when flying two hulls, even in light air. Unbelievable! No doubt it is an engineered twist, but I dont think I could ever get used to sailing it with that sort of twist!

Merlin Hawaii · 30-09-2008, 21:16

Quote:

Originally Posted by w42

The amazing thing with the BOR90 is the "twist" the platform experiences when flying two hulls, even in light air. Unbelievable! No doubt it is an engineered twist, but I dont think I could ever get used to sailing it with that sort of twist!

The rig has no shrouds, only two masthead backstays that mount just forward of the rear crossarms

Under load the backstay pulls the rear windward crossarm up

The designers aren't worried about it, as the leeward ama (in the water) remains level and on the same plane the main hull

They said it's not worth the weight of the additional reinforcement that would be required to keep it level

**David M** · 30-09-2008, 21:27

"I predict 50 knots!"

Merlin Hawaii · 30-09-2008, 21:31

They have an interesting tacking sequence:

First they bring the canting mast over from the windward side to the leeward side

The assistant helmsman mans the lee helm

As the boat carries through the tack, the main helmsman runs from the previous windward helm to the new windward helm, and takes over from the assistant helmsman

The assistant helmsman then moves over to man the new lee helm

**David M** · 30-09-2008, 21:32

Musical helmseats?

w42 · 30-09-2008, 21:41

Here is a close up of the twist

**David M** · 30-09-2008, 21:43

Good gawd...look at the thickness of that mast compared to the people near it.

w42 · 30-09-2008, 21:44

Quote:

Originally Posted by Merlin Hawaii

They have an interesting tacking sequence:

First they bring the canting mast over from the windward side to the leeward side

The assistant helmsman mans the lee helm

As the boat carries through the tack, the main helmsman runs from the previous windward helm to the new windward helm, and takes over from the assistant helmsman

The assistant helmsman then moves over to man the new lee helm

And to make things more complicated, the each helm has two wheels. One for the rudders, one for the trim tab on the center dagger board. Plus there is a "gas pedal" used to release the mast hydraulics before the tack maneuver.

44'cruisingcat · 30-09-2008, 21:46

Ever watched how much the wings on a 747 flex? If they were rigid they would break.

30-09-2008, 19:16	#36
S/V Antares Registered User Join Date: Sep 2007 Location: Annapolis USA Boat: 1983 Gulfstar 36 Antares Posts: 337	I once rode on a Dick Newick Tri at 20 + knots and it had a harmonic "Howl" That made my neck hair stiff and my ---- pucker. I wonder how this magnificent craft "Hums"... Wow! __________________ Will & Muffin Lucy the dog "Yes, well.. perhaps some more wine" (Julia Child)

30-09-2008, 21:27	#39
David M Moderator Site Helper Join Date: Sep 2007 Location: San Francisco Bay Posts: 2,769	"I predict 50 knots!" __________________ David "Marge! Look at all the great stuff I found at the Marina. It was just sitting in some guys boat!" -Homer Simpson Last edited by David M; 30-09-2008 at 21:33.

30-09-2008, 21:32	#41
David M Moderator Site Helper Join Date: Sep 2007 Location: San Francisco Bay Posts: 2,769	Musical helmseats? __________________ David "Marge! Look at all the great stuff I found at the Marina. It was just sitting in some guys boat!" -Homer Simpson

30-09-2008, 21:41	#42
w42 Registered User Join Date: Aug 2007 Boat: Whitby 42 Posts: 68	Here is a close up of the twist Attached Thumbnails __________________ ABYC Trained I post, therefore I am (an expert). Censorship alive and well. Lighten up people!

30-09-2008, 21:43	#43
David M Moderator Site Helper Join Date: Sep 2007 Location: San Francisco Bay Posts: 2,769	Good gawd...look at the thickness of that mast compared to the people near it. __________________ David "Marge! Look at all the great stuff I found at the Marina. It was just sitting in some guys boat!" -Homer Simpson

29-09-2008, 19:22	#32
Randall Registered User Join Date: Feb 2008 Posts: 77	great looking boat but it looks like the courts have decided it is not going to sail. we shall see.

30-09-2008, 17:50	#34
DtM Registered User Join Date: Sep 2006 Location: Sydney Australia Boat: FP Mahe36 "2gether" Posts: 157	Hey Merlin, no worries. daniel

30-09-2008, 21:31	#40
Merlin Hawaii Registered User Join Date: Jun 2008 Posts: 30	They have an interesting tacking sequence: First they bring the canting mast over from the windward side to the leeward side The assistant helmsman mans the lee helm As the boat carries through the tack, the main helmsman runs from the previous windward helm to the new windward helm, and takes over from the assistant helmsman The assistant helmsman then moves over to man the new lee helm

30-09-2008, 21:46	#45
44'cruisingcat Registered User Join Date: Sep 2006 Posts: 1,507 Images: 32	Ever watched how much the wings on a 747 flex? If they were rigid they would break.

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