The EP-5030 is a highly efficient, lightweight composite propeller designed primarily for micro-to-mini aircraft models, indoor radio-controlled (R/C) park flyers, and DIY multirotor drones. Engineered for direct-drive or gear-reduced electric motors, this propeller features a 130mm diameter and a optimized aerodynamic profile designed to deliver consistent forward thrust with minimal rotational resistance.

Specifications

• Model Code: EP-5030 (Direct Drive Series)
• Diameter (D): 130mm (Approx 5inches)
• Pitch (P): 76.2mm (Approx 3inches)
• Configuration: Standard Front-Mount / Puller Profile (Normal CW rotation relative to motor shaft)
• Hub Shaft Diameter: Typically 3mm (Includes step-down adapter rings for 1.5mm and 2mm shafts)
• Material: High-tensile Polycarbonate or Carbon-Reinforced Nylon
• Weight: Ultra-lightweight (Approx 1.5 - 2.5grams per blade)

Features

• Low-Inertia Scimitar Profile: The sweeping, tapered blade profile minimizes tip-vortex drag, allowing small coreless or brushless motors to spin up to top RPM rapidly without binding or drawing excessive current.
• Direct-Drive Optimized: Explicitly molded to handle the high rotational velocities of direct-drive brushless setups (e.g., small 1104, 1306, or 1806 size outrunner motors) without flexing or fluttering under load.
• Impact-Resilient Material: Formulated from flexible polymer arrays that can bend slightly during rough or unpaved runway landings, resisting stress fractures and preventing structural snapping.
• Precision Center Hub: Features a clean, centered mounting bore that minimizes rotational imbalance, eliminating high-frequency vibrations that can degrade flight controller sensors.

Common Applications

• R/C Park Flyers & Gliders: Serving as the primary tractor (front-mounted) propeller for foam-board planes and micro indoor trainer aircraft.
• Micro Quadcopters & Drone Builds: Used in multi-motor configurations for lightweight custom drones requiring high-RPM response.
• STEM Educational Kits: Integrated into school science projects, rubber-band powered models, and wind-tunnel thrust demonstrations.

Installation & Balancing Guide

• Orient the Graphics Forward: When sliding the propeller onto the motor shaft, ensure the curved, convex side of the blade faces forward (in the direction of travel). The flat or concave side must face backward toward the plane's tail. Mounting a propeller backward will reduce its physical thrust capacity by more than 50%.
• Verify Shaft Centering: Use the correct plastic reducer ring (insert adapter) so the propeller fits snugly over your motor's threaded shaft without any side-to-side play. If the propeller is off-center by even a fraction of a millimeter, it will create severe harmonic vibrations that can damage motor bearings.
• Match RPM Safe Limits: Do not pair this lightweight plastic propeller with ultra-high-voltage setups designed for carbon fiber props. Excessive rotational speeds can cause the blade tips to flex excessively or distort structurally.
• Keep Clean of Obstructions: Before powering up your aircraft to full throttle, ensure your workspace is completely clear of loose wires, clothing, or fingers. At high speeds, the thin edges of a spinning 5-inch propeller blade can easily slice skin or cause injury