Luna Rossa Challenge. AC 36

[nav]

Probably out of commission the same amount of time as ETNZ's boat is in transit. Not helpful for both teams. AM must be thinking  - thereby by the grace of God.

Ah hmmm.....

"There but for the grace of God, go I."

That virus looks nasty

 

[Tornado-Cat]

Afraid so. Unfortunately, since the team was announced I was told by personal acquaintances that their composite guys are not the sharpest tools in the shed

Alessandro Franceschetti ? In general the designers complain about the composite guys and they themselves complain about the designers, they have to work together.

 

[Terry Hollis]

All these boats will be at or close to the specced minimum weight. Weakening the structure to may be put some ballast lower down might only yield a minimal gain in a foiling boat. I guess this is what they're trading?

This is not a weight issue, the failure of the bobstay is an engineering issue.

 

[hoom]

Just add some teeth around the hole in the bow!

Jebuzus imagine tooling around in murky water like that & THAT suddenly appears h34r:

 

[Sailbydate]

Jebuzus imagine tooling around in murky water like that & THAT suddenly appears h34r:

At 30 metres, would almost almost guarantee a case of the bendz, I'd have thought.

 

[he b gb]

Via Sailing Illustrated

View attachment 351408

Oh the irony, that photo is pure gold!!  Especially being the Italian boat

 

[justsomeone]

The Stem structure that is the hull, is missing

Which seams to imply that the connection of the bowsprit is stronger than the hull.
Not a fail mode that you would what to design on purpose.

 

[Varan]

Via Sailing Illustrated

View attachment 351408

Even boats are now wearing masks. But the virus already took a mean bite



Photo ripped from sail-world. Some discussion about bow molds and lockdowns too. Not a good time to break shit. Delaying racing helps.

 

[Horn Rock]

Just listened to a replay of TE's FB show. He reckons LR's b1 has got problems - "it's not right" and is going to be scrapped.

 

[Ex-yachtie]

Just listened to a replay of TE's FB show. He reckons LR's b1 has got problems

Holy, shit, the man’s a genius!

 

[nav]

Oh yeah.......Go the Super12s!

 

[Ex-yachtie]

The other bit.

 

[RMac]

Dang.  Looks like the pins held and the hull didn't 

What is the core doing there? If the boat was intact that would be right above the bobstay socket.  Given the pics, it seems to me like the bobstay or bobstay socket failed and then the sprit jacked up and then the bow tore off.  

That's the second critical failure in the same area of the boat;  if you recall the dismasting was due to "chainplate" failure, which on a rig like this eitehr meant where the cylinder attached or where the sheave box for the forestay or tack ram was bonded to the hull, would have been right there just aft of the bobstay socket. 

I thought this sort of bad carbon work would have been more of a Bella Mente/AM kind of setup. 

 

[Skipstone]

I thought this sort of bad carbon work would have been more of a Bella Mente/AM kind of setup. 

"It's carbon, right?  That stuff's stronger than about anything.  Of course it'll be ok..."

 

[rh3000]

Dang.  Looks like the pins held and the hull didn't 

What is the core doing there? If the boat was intact that would be right above the bobstay socket.  Given the pics, it seems to me like the bobstay or bobstay socket failed and then the sprit jacked up and then the bow tore off.  

That's the second critical failure in the same area of the boat;  if you recall the dismasting was due to "chainplate" failure, which on a rig like this eitehr meant where the cylinder attached or where the sheave box for the forestay or tack ram was bonded to the hull, would have been right there just aft of the bobstay socket. 

I thought this sort of bad carbon work would have been more of a Bella Mente/AM kind of setup. 

Perhaps the dismasting accelerated fatigue in this location of the boat that went undetected until it was a bit more, shall we say, obvious.

 

[Nauti Buoy]

Why would the guy on the boat be looking at the bow after they got tied to a chase boat? See the line on the left side. Wouldn't he check before, or wouldn't the chase boat take a look?

Any chance could have happened under tow? Just an idea.

 

[Priscilla]

Why would the guy on the boat be looking at the bow after they got tied to a chase boat? See the line on the left side. Wouldn't he check before, or wouldn't the chase boat take a look?

Any chance could have happened under tow? Just an idea.

Looks to me that they don't tow the AC75's by the bow just to much load.

 

[Varan]

The other bit.

View attachment 351698

Nosa Rossa

 

[Priscilla]

 

[Sean]

If the bobstay failed under load as has been reported, something's got to give. The bow I would think was designed primarily to handle compression loads, not vertical loads at the end of a lever.