Building a high powered max 1500kgf Torsion Catapult with torsion roller instead of Arm

A simple project to build an alternative torsion catapult, potential more efficient.
1500kgf Torsion Catapult

Goal

  • simple, efficient torsion launcher
  • throws 25–35 kg payloads
  • low-cost build

Concept

  • uses torsion roller (6 revs) instead of arm (½ rev)
  • 6-strand rope bundle for torsion
  • compact setup, multiple launchers per pallet

Frame

  • steel frame, 48 in high
  • pallet-size footprint
  • cocking lines apply torsion and launch payload

Testing

  • structure checked with hydraulic jack before tensioning
  • rides arranged to final test site – Surrey

Easily upscaled if people are interested in breaking records.