Henry Trengrouse's life saving device rescued thousands of stranded sailors from certain death. The boys come up with their own and take on Her Majesties Coastguard in a rescue across Porthleven Harbour.
Perhaps the most famous invention of all! The Re-Inventors head to York to face their greatest challenge - creating a powered locomotive that will take on George Stephenson's iconic 'rocket' in a race.
The 1725 Parish Fire Pump is widely considered to be the birth of the fire engine and is the brainchild of inventor Richard Newsham. Can the boys' version beat the original invention in a head to head fire fight?
A machine that changed the face of the nation, Edmund Cartwright's Steam Powered Loom, is the challenge facing Dick and co.
The Re-Inventors have just two days to rebuild Andrew Meikle's Threshing Machine from scratch - and then take on an original in a head to head contest.