Redstone Engine

Summary
The redstone engine is the most basic and also weakest engine in BuildCraft. All it needs to run is a redstone current, this can easily be done by placing a lever on the block beside it. These engines can not explode. To mine it, it requires at least a Wooden Pickaxe.

Crafting
To build a redstone engine you'll need: The 3 wooden planks fill the top row. The glass is in the middle, the 2 wooden gears are on both sides in the bottom row and this piston is in the bottom center.
 * 1 Piston
 * 1 Glass
 * 2 Wooden Gears
 * 3 Wooden Planks