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WhiteofHeart said..dejavu said..
From what I've heard the slow release of the windfoil Phantasm is due to breakage so its been delayed until they can "fix" the problems. I suspect if they're jumping these foils with long masts then there will be issues. We'll have to wait and see. No such issues for the winging foils so hopefully they'll release those soon.
My experience with foil R&D is that the longer carbon masts isnt the problem, bending fuselages or breaking front wings was. Very hard to get it right with respectable weight. We opted for carbon monobloc fuselages in the end, was the most durable option.
In this case, it may well be the masts. In their literature, they've touted a semi-hollow internal structure like an alu mast extrusion. I suspect, like a cf bike frame, they are using internal bladders during the build process. It has to be done right - if there are any voids, folds in the cloth, etc. you end up with a potential point of failure. Other makers tend to use either solid carbon/simple carbon lay up over expanding foam in high pressure molds which makes for a simpler structure less prone to either voids or their effects.
Their prototypes which have been out a while could either be from the factory or hand built (which could be immune from mass manufacturing issues).
I've suspected for a while that their delay may be the result of the mast design. At this point it's still just the suspicion of one guy on the internet with no supporting evidence. But it does fit what dejavu said.
This guy, former aerospace engineer, does carbon bike repair. He has some excellent videos of doing cut ups of carbon bike frames and examining the quality of the build.
A pretty cool rabbit hole if you want to learn more about cf fabrication.
If he lived close to me and he'd be willing to do windfoil gear, he'd be my go to guy.