What Could Possibly Go Wrong?
Homer Simpson would love Kevin's bowling ball that is engineered to be steered into the pins each time. Or is it?
The Remote Control Bowling Ball
Grant is sure of his advantage in a paintball bet if he's wearing night vision goggles he built out of materials rustled up in the garage.
Night Vision Goggles
The guys hit the range with a lot of duct tape, and a lot of scenarios to craft something to stop a 9mm Luger round.
The One With Duct Tape and Guns
In the first pool test of Kevin & Grant's homemade submarine, things start to go belly up when Grant smells smoke.
The Scary Submarine
Kevin and Grant turn their first test - choosing a tire for the monocycle - into a project of its own. Giant tire bowling with trash can "pins."
Tire Bowling Test
The guys build their life size punching robots, complete with pneumatic power. Round one proves to be brutal.
Rock 'Em Sock 'Em Robots
The mission is to escape from the island using nothing more than what they would have had in the ‘50s. Grant is in a makeshift raft, Kevin is going to swim.
Escape From Alcatraz
The guys have built dream motorcycle chariots, and as always they had different approaches for their builds. Let’s see what happens at the first test.
Motorcycle Chariots of Glory
The guys each invest in some heavy junkers and modify them to stand up to their personal Mad Max demolition derby. Lots of spikes are used.
Armored Car Attack Strategy
Kevin and Grant wire together a crazy homemade lie detector with spare parts in the garage. They’ve kicked it up a notch by adding a shock if they are caught in a lie.
Homemade Lie Detector
Kevin shows how quicksand is created by agitating a sand and water mixture. With Grant standing in it as a test.
The guys test several "squirt gun" formats, with one powerful enough to knock down a brick wall. Once that's done, they're off to build a better version.
Uber Squirt Gun
People jump off tall things. Grant and Kevin want to do it right, so part of the prep is to create a cushion. Their first test is with carboard boxes
Box Fall Test
Kevin and Grant watched the internet community jumping off things using small parachutes, umbrellas, and tarps to break their fall. Naturally, they tried it too.
Three Things That Don’t Help Decelerate
Kevin and Grant build two different types of earthquake resistant test tables and their own seismograph. Initial tests in the back of Grant’s truck provided inspiration.
The Earthquake Resistant Table Test
Fascinated the the aerodynamics and speed of hydrofoils, the guys decide to build one. They understand the science, but they’ve never done it before. Prototype testing reveals what to do next.
How to Handle a Hydrofoil