Floating Arm Trebuchet (FAT)

A fixed counterweight trebuchet where the Counterweight is forced to fall straight down by a counterweight guide. The axle is allowed to roll forwards and backwards on a rail.

Machines

Power Source

Gravity or Springs

Advantages

  • Efficient when tuned
  • Forced increase in projectile path by axle displacement allows lower arm ratio and therefor a larger drop than a comparable FCW

Disadvantages

  • Harder to make than an FCW or HCW
  • Track gap

Pictures

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