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🚁 AW139‑Style Helicopter Collective – 3D Print Files Only

By 737DIYsim

👉 Build video: https://youtu.be/FVQ8w8BwIzM

This is the budget-friendly, print‑files‑only version of my AW139‑inspired helicopter collective—designed for builders who want the full functionality and realism of the original control system without the advanced CAD package.

This version includes all required STL files, simplified for straightforward printing and assembly, while still delivering a robust, smooth, and immersive helicopter collective experience. Perfect for home cockpit builders, training setups, and anyone looking to upgrade their rotary‑wing realism!

⭐ Overview

This collective is based on a PC‑compatible joystick architecture, using a Leo Bodnar interface and Arduino Mega. It integrates smoothly with:

✔ X‑Plane
✔ DCS World
✔ P3D
✔ Microsoft Flight Simulator
✔ Full Mobiflight compatibility

Even in this print‑files‑only edition, you get a highly realistic movement profile and full switch mapping support.

🔧 Features & Mechanics

Internal lever geometry designed to emulate real collective travel and feel
Compatible with stepper‑driven trim systems (magnetic brake / force trim release)
Mechanical structure optimised for robustness and smooth leverage
Fully mappable control functions

🛫 Realistic Controls

Functional force trim release
Beep trim hat switch for fine input control
Optional integration of stepper‑based resistance system—no servo FFB needed

🌀 No Force‑Feedback Hardware Required

Real helicopters rarely use servo‑type FFB.
This design instead supports a stepper‑based linear spring simulation, providing natural progressive resistance without expensive or complex electronics.

💪 Built for Realistic Forces

Engineered to handle real‑world load levels
Trim‑release allows repositioning without fighting the mechanism
Once released, the collective locks into position firmly and accurately

🎮 Operation

Use the trim release for large manoeuvres, take‑off, or landing
Use beep trim for precision hovering and cruise adjustments

🎁 Included in This Download

Complete STL package for printing the collective system
Simplified, print‑ready components—no CAD editing required
STL for an AW139‑style grip
- Best in resin (recommended)
- FDM printable with supports

(Note: No STEP/CAD files are included in this version.)

🖨 Printing Requirements