Jörg and Cheyenne are challenged to build a javelin Launcher. The two work together and build a machine that is so impressive that Jörg thinks it could beat a professional athlete. But will they beat an Olympic medallist in the finale?
Backyard Ballistics is a scientific construction series where Jörg Sprave and Cheyenne Ruether take on ambitious fan set challenges with surprising results, gnarly carnage and spectacular finales!
