Introduction

Launchers can be stacked up to increase their power.
The max amount of stackable launchers is 4.

Keep in mind that the first launcher is the main one and it is responsible for setting the base force multiplier. That basically means that using a Powered Launcher first and then a Normal Launcher is more effective than using a Normal one and then a Powered one.

To activate a launcher a redstone pulse is needed. Falling on a launcher will prevent the player from taking any damage, even if crouching. However, it is important to remember that because of the way Minecraft manages blocks borders, falling onto the extreme border of the block may cause the player to actually take fall damage.

Launchers can move only if they are retracted and the block position in front of them is not occupied or unless it is a tripwire.