The Fusion 700 chassis is constructed around dual 2.0mm carbon fiber side plates linked by CNC-machined aluminum bearing blocks. An integrated sliding battery tray system allows rapid battery swaps and clean center-of-gravity (CG) adjustments.

Main Rotor Head

• Main blade operating range: 690 mm to 715 mm
• Main shaft diameter: 12 mm
• Feathering shaft diameter: 10 mm
• Anodized CNC aluminum flybarless head block with low center of gravity geometry
• Dual-radial and thrust bearing supported blade grips engineered to isolate high centrifugal loads under hard cyclic input

The low-CG head profile reduces overall aerodynamic drag and isolates roll inertia closer to the center of mass, providing crisp cyclic response and predictable tracking through large aerobatics loops and high-speed passes.

Power delivery features a wide Mod 1.0 helical main gear paired with heavy-duty motor pinions to ensure quiet operation, high tooth contact area, and strip-free performance under load spikes.

The tail mechanism utilizes a rigid 30mm carbon fiber boom containing a low-friction timing belt, eliminating static accumulation issues and gear mesh maintenance associated with torque-tube configurations.

• Tail shaft diameter: 6 mm
• Dual-point supported aluminum tail bellcrank and pitch slider to prevent binding under high aerodynamic loads.
• Integrated belt tensioner adjustment to maintain optimal belt tracking across operational temperature ranges.

Designed specifically for modern high-voltage 12S LiPo electrical systems:

12S Setup: Powered by a 4525 or 4530-class brushless outrunner (480-540 KV) paired with dual 6S 4,500-5,500 mAh LiPo batteries connected in series. This setup ensures low current draw, reduced thermal load on the ESC, and explosive vertical performance during demanding 3D routines.

Using a standard 700 mm blade configuration:

  Main Rotor Diameter = 1.550 m
            Rotor Radius (r) = 0.775 m
            Disc Area (A) = π x r²
            A = π x (0.775)² ≈ 1.89 m² (approx 20.3 ft²)
            
            

Assuming an estimated ready-to-fly (RTF) weight of approximately 5.4 kg (53.0 N):

  Disc Loading = Force / Area
            Disc Loading = 53.0 N / 1.89 m² ≈ 28.0 N/m² (approx 2.85 kg/m²)
            
            

*Note: Operating 700-class rotor heads above 2,300 RPM requires verified carbon blade structural ratings, rigid pre-flight inspections, and precise governor tuning to prevent overspeed hazards.*

For structured maintenance, setup logging, and telemetry analysis, data for the Blade Fusion 700 should be organized into three operational tiers:

Factory Specifications

Gear module and tooth counts, factory screw torque limits, designated Horizon Hobby part numbers, and structural limits.

Measured Setup Data

Installed component weights, precise center of gravity (CG) metrics, battery pack internal resistance (IR) logs, and individual ESC telemetry profiles.

Calculated Performance Data

Theoretical vs. logged headspeeds derived from motor KV, under-load 12S battery voltage, and primary drivetrain ratios.

The Horizon Hobby Blade Fusion 700 brings competition-tier 700-class engineering to the Fusion series, pairing heavy-duty mechanical elements (12mm main shaft, Mod 1.0 gearing, 30mm carbon boom) with modular maintenance accessibility. Routine inspection of drive belt tension, swashplate ball links, and main gear backlash ensures optimal safety and peak aerobatic performance flight after flight.