Helicopter main rotor with swash plate

Spinning rotor and adjustable pitch links
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updated November 9, 2025

Description

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Helicopter rotor assembly with turning rotor blades and adjustable pitch / collective.

A great model (thanks to the original designer) which, after considerable time and tinkering, is now easier to print and fit together. 

Printing: standard settings with tree supports. 

Assembly tips: 

  1. Sand the ball joints to take off the bits where the support joined them and make them nice and round. 
  2. Use a needle file to file the inside of the T-slots on the 3 frame parts if the sliding parts don't move easily.  
  3. Follow the photos to build up the rotor head.
  4. The 3 frame parts are snapped around the 2 circular parts with 3 prongs. With the frame snaps, its easier to slide the top one in, then snap the bottom one. 
  5. Put the assembled rotor head down through the frame.
  6. Add the gear wheels and T-slot sliding parts
  7. Snap together pitch links to the T-slot sliding parts. 
  8. Push on the bottom gear wheel to the rotor. 
  9. Drop on the base and have fun! 

Tags



Model origin

The author remixed this model.

Differences of the remix compared to the original

Changes:

  • Print plates in 3mf (bambu slicer) with all components separated and a reference model of the assembly. 
  • Adjustments to the parts that slide in the T-slots to make them slide easily.
  • Adjustments to the main frame parts to help them snap together easily. 
  • Added a base plate for it to sit on.
  • Added a shorter rotor blade (more reliable print).
  • Fixed some non-manifold parts.

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