ianxofour | Bad Piggies: Mech Robot Cartwheels with Perpetual Motion Power @ianxofour | Uploaded 11 years ago | Updated 4 hours ago
Some building elements in the game are larger than a single unit cell (such as wings, helicopter blades, and yellow umbrellas), which means that they can be stressed under contact with other pieces at startup. Due to imperfections in the game's implementation of Newton's 3rd Law (every force has an equal and opposite force), stressed pieces can have an imbalance of forces, and these forces can potentially be harnessed to provide useful work. In other words, you can make a perpetual motion machine, if you know what to do.
The mech robot is assembled up-side-down because wings can only be installed right-side-up, and they are preferred in this particular orientation. (Assembling the robot right-side-up would cause the robot to cartwheel left, into the wall) The wings squeeze the wheel between them, and the resulting imbalance rotates the robot clockwise. The perpetual motion powerplant used in the cartwheeling robot is an aggressive version that generates a lot of force but may require repeated attempts to get started. The last clip shows a more reliable a perpetual motion powerplant that uses the slightly smaller wooden wheel and a more flexible frame. Other perpetual motion designs exist as well, but this is the most useful design that I've found so far.
Some building elements in the game are larger than a single unit cell (such as wings, helicopter blades, and yellow umbrellas), which means that they can be stressed under contact with other pieces at startup. Due to imperfections in the game's implementation of Newton's 3rd Law (every force has an equal and opposite force), stressed pieces can have an imbalance of forces, and these forces can potentially be harnessed to provide useful work. In other words, you can make a perpetual motion machine, if you know what to do.
The mech robot is assembled up-side-down because wings can only be installed right-side-up, and they are preferred in this particular orientation. (Assembling the robot right-side-up would cause the robot to cartwheel left, into the wall) The wings squeeze the wheel between them, and the resulting imbalance rotates the robot clockwise. The perpetual motion powerplant used in the cartwheeling robot is an aggressive version that generates a lot of force but may require repeated attempts to get started. The last clip shows a more reliable a perpetual motion powerplant that uses the slightly smaller wooden wheel and a more flexible frame. Other perpetual motion designs exist as well, but this is the most useful design that I've found so far.
