the rev uses a bungee line that attatches to one of the front lines. There is not actual flying tension on it under normal circumstances, which is why its a bungee. A standard length line would be too slack, and in the way especially once you depower the kite a little bit. once the cl is released, the front line slides through a small stopper ball and the bungee pulls tight; flagged kite. I have no idea why mine broke, but it snapped clean and bye bye kite. (this was after the CL line broke) Fortunately is was tamed before becoming a hazard on the beach or getting damaged, although i was so pissed i was going to leave that thing in whatever tree or building it got wrapped up in
Moral of the story? just bought a new 8 and 12 meter SB3's