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.

Launcher

Base force: 1.25
Stack power percentage: 33.5%
Effective stack multiplier: 0.41875

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Powered Launcher

Base force: 2.125
Stack power percentage: 29.75%
Effective stack multiplier: 0.63218

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Extreme Launcher

Base force: 2.95
Stack power percentage: 27.5%
Effective stack multiplier: 0.81125

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• Base force: it represents the base force applied
• Stack power percentage: it represents the percentage of the base force that gets added to the stack multiplier when the launcher is stacked
• Effective stack multiplier: it represents the effective force added when the launcher is stacked (baseForce x stackPowerPercentage)

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Example of a stack force calculation

Given the following stack (starting form the top Launcher):

1. Powered Launcher
2. Extreme Launcher
3. Extreme Launcher
4. Launcher

The base force Fb is applied by the top launcher, the number one, so Fb = 2.125.
Now, with Stot as the total stack multiplier starting at 1: Stot = 1, each stacked launcher (starting so from the second) will add its own stack multiplier to Stot:

• Numbers 2 and 3 are Extreme Launchers, so they both add the same multiplier -> Stot += 0.81125 + 0.81125 = 2.6225
• Number 4 is a Normal Launcher -> Stot += 0.41875 = 3.04125

To obtain the final force Ftot, the base force is multiplied by the stack multiplier:
Ftot = Fb x Stot = 2.125 x 3.04125 = 6.4626

Using the lcalc command

The lcalc command can be used in order to calculate the force of a given Launchers Stack:
Parameters:
l : Launcher
p: Powered Launcher
e: Extreme Launcher

Example
/lcalc e e l p => calculate the force generated by the following stack:

1. Extreme Launcher
2. Extreme Launcher
3. Launcher
4. Powered Launcher

Height table

The following table can be used to approximate the height that can be reached with a certain force:
Accuracy: ± 5 blocks