thid is from the decemebr 1999 issue of freeze, '...Paul Ahern...he holds the world record for cliff jumping, 220 feet in springtime mush. It was a flat landing and he broke his sternum. 'I (Ahern) figured I was going 83 Km/hr on impact and I made a six-foot crater, which converts to 37.33 g's. Comparably, the average plane crash is only 25 g's, he brags.' I don;t know if this is the most reputable info, it is Freeze mag, but just passing along what I've read. -Josh