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Message: [QUOTE="dirt bike dave, post: 1071493, member: 18302"] There was a thread a long time ago about how it is possible for any engine to fail when panic revving in the air, with no load on the engine. If I remember correctly, Rich chimed in, and he explained the physics of it. I believe the failures were at the top of the connecting rod. Looks like that is what happened to JBS. From the video it was obviously a catastrophic engine failure. If he was revving in the air, it is because he wanted to bring the rear end down. Stopping the motor and rear wheel caused the front end to drop. Even a great rider like JBS is not going to save it when this happens unexpectedly. [/QUOTE]