Steam AK420-HDX Helicopter Kit (with Blades)

AK420 HDX Helicopter Kit – Precision Meets Performance in 420-Class

Key Upgrades & Features:

1. Optimized Layout for Performance & Cooling

• The main frame has been redesigned to reposition the Motor and ESC to the top, enhancing heat dissipation and contributing to a sleeker, cleaner appearance.
• The battery is now mounted lower inside the frame to improve the Center of Gravity (CG), resulting in a more stable flight experience and added protection during crashes.

2. Sliding-Style Battery Tray System

• Features high-precision carbon fiber rails and the proven locking mechanism from the AK700, offering both secure mounting and quick battery changes.

3. 22mm Main Grip Arms

• Upgraded from the previous design to improve responsiveness and deliver a smoother, more linear control feel during aggressive maneuvers.

4. Reinforced Solid Tail Fin

• Enhances structural durability and crash resistance, ensuring reliability even in demanding conditions.
  

5. Exclusive HDX Color Scheme

• The canopy features a striking new “HDX” colorway that sets it apart on the flight line and enhances visibility in the air.
• A completely new appearance with a specially designed canopy

Specifications:

• Main Blade Length： 380-420mm
• Tail Blade length：56-74mm
• Cyclic Servos: Micro size
• Tail Servo: Mini size
• Pinion：12T M1
• Main Gear：75T M1
• Front Tail Pulley：81T
• Tail Pulley：20T
• Recommended speed controller：6S 60-85A
• Recommended battery： 6S 2400-2800mAh
• Maximum battery size：50x38x125mm
• Recommended Battery Weight: 350g
• Recommended motor series：3120-3220
• Recommended motor outer diameter：≤43mm
• Recommended motor KV: 950-1000Kv
• Weight (No power system) Approx：~650g
• (Include blade and canopy) Approx：~750g

Package Includes:

• AK420 HDX Helicopter Kit  x 1
• Steam 420mm Main Blade Set x 1
• Steam 71mm Plastic Tail Blades Set x 1

Manual: Download