Hehe, I've timed it numerous times. The most was in 5-1 which yielded well over 5 seconds of air (forgot actual time). That was not to long ago when it was running real fast and the lap bar wasn't really in the way :).
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2001 Force Laps-107
2001 Magnum Laps-222
6/11/01 Gemini Laps 100