They made a very large trebuchet. It was the largest duct tape build in the show's 14 year history. They used 2,600 lbs. of pine board, 78 rolls of duct tape, and had a 750 lb. engine block as their counterweight. The first test fire of a watermelon went 171 feet. They then used their weapon of war to destroy an inflatable shark waterslide with a flaming Molotov cocktail. And with this final fling the MythBusters signed off.
Duct tape was the focus of 25 stories, including five with duct tape boats. In all duct tape myths were confirmed 21 times during the show's long run. They ended up using over 5000 rolls of duct tape (about 83 miles). This final build should certainly give all builders some ideas about the versatility of duct tape.
|MythBusters adjust their duct tape trebuchet|
|Duct tape trebuchet|
|Adam Savage makes small model of trebuchet|
MythBusters - Duct Tape Trebuchet
MythBusters Episode 248: Duct Tape: The Return --
Premier Date: March 6, 2016
This was the last new episode of MythBusters to ever air. It premiered one day after the Grande Finale to promote the Science Channel as the future home of MythBusters reruns.
It is possible to build a fully-functional trebuchet held together only by duct tape.
Adam built a small-scale model trebuchet using wooden beams and duct tape and fine-tuned its design. Jamie developed construction methods designed to withstand the significant forces involved and incorporated them into his own model.
At a large field, they began assembly; the full-scale trebuchet used 78 rolls of tape, 2,600 pounds (1,200 kg) of construction lumber, and a 750-pound (340-kg) automobile engine block as the counterweight. A test shot with a watermelon as the projectile achieved a range of 171 feet (52 m) and the structure remained intact. To simulate using their trebuchet in combat, they launched a Molotov cocktail to a distance of over 100 feet (30 m), and then launched another to ignite a giant inflatable shark set up at that same distance.