Was going to travel light and leave the workstation, but lots going on so I better take it and keep up.
I will have to do the study plans sendng when I get back next monday.

A change in vendors of the shopping cart is coming. I don’t yet know if will be seamless or there will be hiccups.
Any problems there always is the other ways to buy items. And do let me know if any problem.

Graphene Paint

Amazing energy saving features. Surely we just beginning to understand the possible uses. https://inhabitat.com/scientists-invent-graphene-paint-that-makes-your-house-super-efficient/

And again, they have gone upscale and now call it Pacific Marine Expo. Fish expo it will always be to me.
Nov. 16 to 18th. Century Link Field Event Center. Seattle.
It is a PNW event, but mariners can always be heard speaking a dozen languages there.
It is the serious boat show.  I can’t find the link.  Google it.

When the Rapido 60 trimaran first appeared, I figured it was some kind of a joke. The styling recalled an F27 from 20 years ago. I teased that they owed Ian royalties. It’s beam overall was just over 38’, which some of mine, and most modern 40’ + trimarans, equal.  My GS 60 beam overall, from 25 years ago, in E-glass, was 44.5’. Everybody knows that when you push a multi, wide is what keeps you right side up. So making it not wide had to be something to push onto the unsuspecting, right?

Almost all the pictures I saw of them had the crazy camouflage paint so it was never clear what was going on. I figured that they were not serious and didn’t think much more about them.
It was just pointed out to me that the R60s don’t have continuous mainstrength beams. Blew me away. Followers of this over the years have seen the importance of continuous fibers, fiber orientation, co-curing of mission-critical parts, not forcing composites into sharp turns…..
And here is one design that seems to ignore all that. What gives?
And that explains the narrow overall beam. That’s the only way to keep the loads down, besides throwing carbon at the problem.

Again, I have always declared that with enough carbon and enough money, one can have almost anything designed. This seems to be a prime example.
If we assume 24,000 lbs sailing weight, and a 12’ cantilever of the beam, then hit it with a shock load on one of the beams. The moment at the root will be something like a quarter million foot pounds. If the bury is 3’, then the load to resist will be some 80,000 lbs.
No wonder it is so heavy. Yes, heavy. 20,000 lbs. lightship. It is all carbon, right? That carbon has some 5 to 7 times the modulus of E-glass. Compare to my GS60 at 13,000 lbs., as designed, in mostly E-glass.
Main point. You can’t beat a continuous D section for the most beam strength and stiffness, the least weight, and least cost to build.
And again, all boats inhabit a place on a continuum between a habitat and a vehicle.
The R60 seems a bit confused.  All the carbon tells me vehicle, but chopping up the lightest, strongest possible connecting beams to get more cabin space is right back to a 1960s Horstman; habitat.
None the less, I’m sure they will sell a lot of them. The owners can “Hey baby, I got a carbon boat.”
I prefer direct, simple solutions to magical ones.

Will be out of the office for a few days. Will have phone and laptop with me though.

Part of what I am doing on the lunar lander dwelling project; building a tiny house using boat construction, is to test the limits of many techniques and products. I took the VHB tape past its limit.
I tried to use it to attach an acrylic shower door without any fasteners; a worthy goal.
While the VHB tape is amazingly strong, it has limits. Its weakness as I understand it, is long duration loading, while depending on peel strength. The shower door provided that.  It’s tepid resisting the energy of initiation, followed by energy of propagation, made it fail.

In the picture, the VHB tape attaches both the hinge and the angle brackets.  Both failed after a while.
On a window, peel strength would not even enter into it. I’m always curious about where the real world limits are.

I did see that it did go on despite the exciting weather. Did anyone go and anything to report?

I was also pissy as I thought a house built almost entirely like a boat, and permitted, would be a great topic.   Epoxy, foam, vacuum bagging, BS 1088 plywood, biaxial roving,  glass gloth over everything, 12v electrics, stainless fittings, 2 part poly paint, Beckson ports.  Technology transfer.  IBEX powers were completely uninterested.