Reminds me of this bike lock, which ended up being pretty tough:
https://www.youtube.com/watch?v=iLidaYcgim8https://www.youtube.com/watch?v=VMxot4xTjkcI don't think Bill ever tried to lever the bars apart by putting a big bar between the joints and testing them in the direction they don't hinge. I'm surprised since so many people were commenting to try this. I could see that being a method of attack, though a thief would look suspicious carrying a huge metal bar around (if it would even work).
They say several times that the bars are made of titanium, but I can't see anywhere where they say that the lock itself is titanium, so that might be a weak point. If so, then its not really that much better than a lock made entirely of steel. They actually say in the video that the rivets at the joints are stainless steel, so that would also be a weaker point. Don't get me wrong, its still a lot of thick steel, so its tough, but a chain is only as strong as its weakest link, so the titanium may be a bit of overkill. I guess it decreases the weight, so you would have to evaluate if the decrease in weight is worth the high cost of the materials.
It's interesting that it locks by just being pressed in. This makes me think it might have some sort of spring operated latch which could be susceptible to shimming or bypass (though we can't discuss that in the normal forums).
The keys do look short, but I would guess form the pictures that they have at least 6 discs. They probably had to keep the keys short, since the lock is at a 90 degree angle, or else it would become a pretty awkwardly shaped device.
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