Nope, its the cylinder layout for a napier deltic. 18-cylinder opposed-piston, 2-stroke supercharged diesel. Used in railway locomotives, mine sweepers and the most amazing torpedo patrol boats ever.
That guys is absolutely nuts, incredibly brave but really shitzo nuts too
Pulled the front-flip first time at Earl’s Court. The way the chair bounces seemingly out of control on landing.. phew! Great thing for my kid to see especially. 🙂
They show a video on the big screen before he drops in (of crashes, natch) and at the end he’s lying on the floor and says “oh no, I’ll be in a wheelchair for the rest of my life!” 😀