Flying Bicycle Success! (Part 2) | Bang Goes the Theory | BBC

Designed and built in just weeks, Jem attempts to pedal his homemade plane into the sky for the first time. Subscribe: WATCH MORE: Hiroshima: Horizon: Best of Alan Partridge: Harry Enfield and Chums: Welcome to BBC Studios, bringing you the best of British TV! Here you’ll find classic comedy, gripping drama, as well as the best documentaries, science and history