The team attempts to build a medieval machine gun known as a Ribauldequin.
Available until 18:10 24 Feb 2014
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This week, Dick challenges the team to build a catapulta, one of the most formidable weapons in the Roman arsenal. The Romans spent centuries perfecting their design of this enormous bolt throwing siege engine. The team have three days. Once proceedings are underway, Dick explains the original machine and reveals, with the aid of CGI, how this impressive weapon changed history.
Meanwhile, disaster strikes. The team have spent hours coiling over 300metres of rope to create springs, but just as they complete the task the whole build is put in jeopardy. With no catapulta, their ingenious modernised bolts will have no chance to prove their worth. In taking on the Romans, has the team bitten off more than it can chew?