Propeller set for multicopter GRAUPNER 2-blade 8 x 4.5" (20.3 x 11.4 cm) model 2948.8X4,5

Two-blade propeller set by GRAUPNER sized 8 x 4.5" (20.3 x 11.4 cm) designed for use on multicopter frames. These replacement rotors are intended as spare parts for small-to-medium class multirotor UAVs and are suitable for repairs, routine maintenance and basic performance tuning. The propellers are balanced and shaped to generate lift efficiently within their size class and to match common motor and ESC setups used on hobby and light commercial multirotors.

Advantages

The Graupner two-blade propeller set offers a straightforward replacement option with consistent blade geometry for predictable thrust and responsiveness. Its standard 8 x 4.5" dimensions provide a compromise between thrust and rotational speed, helping maintain flight stability on compatible platforms. The set's construction is suitable for repeated mounting and removal during maintenance and repair operations.

Suitable for

• Replacement rotor blades for small to medium multirotors
• Routine maintenance and spare-part inventory
• Performance testing and tuning of propeller/motor combinations
• Repair of hobby and light commercial drones with matching prop size

Key specifications

• Blade type: Two-blade propeller
• Size: 8 x 4.5" (20.3 x 11.4 cm)
• Design: Standard fixed-pitch multicopter blade geometry
• Compatibility: Intended for small-to-medium multirotor platforms using matching diameter and pitch
• Set contents: Multiple propellers sufficient for replacement or spares (see product listing for exact quantity)

How to use

Before installation, inspect each propeller for visible damage, cracks or deformation. Mount the propellers on motors with the correct rotation direction and ensure secure fastening according to the multirotor motor manufacturer’s torque recommendations. Balance the propellers if required to reduce vibration. After mounting, perform a low-throttle test hover to verify correct rotation and absence of unusual vibration or drift, then retighten fittings after a short flight if necessary.

Usage recommendations

Use these propellers only on multirotor frames that match the 8 x 4.5" size and ensure motor and ESC ratings are within safe operating limits. Replace any propeller that shows damage or excessive wear. For optimal performance, pair the propellers with motors and flight controllers configured for the same propeller class and conduct balance checks regularly.