How do I know if these propellers will fit my motor?

You must measure the metal shaft of your motor using digital calipers. If the metal shaft has a diameter of exactly 0.8mm, these propellers will friction-fit perfectly. They are commonly used on 615, 716, and 820 coreless motors.

Can I use these two propellers to build a quadcopter drone?

No, you cannot use these specific propellers to build a quadcopter. Quadcopters require an equal mix of clockwise (CW) and counter-clockwise (CCW) propellers to remain stable. Since both propellers in this pack have the exact same pitch, your drone would spin uncontrollably.

Do I need to use glue to keep these propellers on the motor shaft?

No, you do not need to use glue. The 0.8mm inner hole is designed to be slightly undersized to create a tight friction fit on a 0.8mm metal shaft. Simply press them on firmly, and they will stay secure during high-speed rotation.

What should I do if the propeller is blowing air in the wrong direction?

If the propeller is pushing air forward instead of backward, it means your motor is spinning in the wrong direction. Simply swap the positive and negative wire connections on your battery or motor driver to reverse the motor's rotation.

Can I purchase these micro propellers in bulk for a school science class?

Yes, you can purchase these 46.5mm RC Micro Propellers in bulk quantities at Sun Cheong Computer Co. Ltd. (新昌電腦有限公司) in Sham Shui Po. Our physical store frequently supplies STEM educators with reliable, low-cost aviation components for classroom projects.

46.5mm RC Micro Propellers | 0.8mm Hole (2 Pcs)

Name: 46.5mm RC Micro Propellers | 0.8mm Hole (2 Pcs)
Brand: Sun Cheong Computer Company Limited
SKU: 21PS001437
Price: 10.0 HKD
Availability: InStock

Short Product Description

The 46.5mm RC Micro Propellers (0.8mm Hole) is a durable, lightweight 2-piece set designed for DIY fixed-wing RC airplanes, hovercrafts, and mini airboats. Featuring two identical single-direction blades with an 8.8mm width, they friction-fit perfectly onto standard 0.8mm coreless motor shafts. Available for instant pickup at Sun Cheong Computer Co. Ltd.(新昌電腦有限公司) in Sham Shui Po, our technical staff can provide expert advice on pairing these propellers with the right motors for your custom STEM aviation projects.

Key Features

Identical Pitch Design: Includes two identical single-direction propellers, ideal for single-motor RC planes and DIY hovercrafts.
0.8mm Precision Hole: Designed for a tight, secure friction fit on standard 0.8mm coreless motor shafts, requiring no tools for installation.
46.5mm Optimal Length: The 46.5mm blade span and 8.8mm width offer an excellent balance between high thrust output and compact maneuverability.
Impact-Resistant Plastic: Constructed from flexible, durable plastic that resists shattering during minor crashes and hard landings.
Lightweight Design: Adds virtually no weight to your micro vehicles, preserving your battery life and maximizing run times.
STEM & DIY Ready: The perfect aerodynamic component for school science physics experiments and miniature motorized boats.

Full Product Description

Reliable Thrust for Single-Motor STEM Projects

This 46.5mm Propeller Set delivers stable and highly efficient aerodynamic thrust for your miniature aviation and marine projects. Manufactured from lightweight, impact-resistant plastic, these blades are designed to survive the inevitable crashes associated with DIY RC vehicles. With both propellers featuring the exact same pitch, they are the perfect aerodynamic components for single-motor setups like custom rubber-band planes, motorized gliders, or desktop hovercrafts.

Friction-Fit 0.8mm Shaft Compatibility

The 0.8mm Inner Diameter of these propellers is precisely molded to friction-fit directly onto standard coreless motors. This eliminates the need for messy glues or tiny set screws, allowing for rapid field repairs when a blade gets damaged. They are universally compatible with popular micro motors that feature a 0.8mm shaft, including the widely used 615, 716, and 820 series coreless motors.

Pro Tip from Our Technicians

Since both propellers in this pack feature the exact same pitch (identical rotation), our Sham Shui Po technical team wants to remind you that they are not suitable for building quadcopters, which require counter-rotating blades to stay stable. When installing this Micro Propeller on your RC plane or boat, always test your motor's polarity first. If the propeller is blowing air forward instead of backward, simply reverse the positive and negative wires on your 3V/5V power supply to correct the thrust direction.

Technical Specifications

Product Type: RC Micro Propeller Set
Total Length: 46.5mm
Blade Width: 8.8mm
Inner Hole Diameter: 0.8mm (Friction fit)
Rotation Type: Single-Direction (Identical Pitch)
Material: Lightweight Plastic
Color: Black
Compatible Motors: Coreless motors with 0.8mm shafts (e.g., 615, 716, 820 series)
Package Quantity: 2 Pieces (Identical)

Delivery Options

Local delivery within Hong Kong and in-store pickup.
Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
In-store pickup details (location and time) will be confirmed by email or phone message.
Delivery times are estimates and may be affected by weather or unforeseen circumstances.

FAQ Section

How do I know if these propellers will fit my motor?You must measure the metal shaft of your motor using digital calipers. If the metal shaft has a diameter of exactly 0.8mm, these propellers will friction-fit perfectly. They are commonly used on 615, 716, and 820 coreless motors.
Can I use these two propellers to build a quadcopter drone?No, you cannot use these specific propellers to build a quadcopter. Quadcopters require an equal mix of clockwise (CW) and counter-clockwise (CCW) propellers to remain stable. Since both propellers in this pack have the exact same pitch, your drone would spin uncontrollably.
Do I need to use glue to keep these propellers on the motor shaft?No, you do not need to use glue. The 0.8mm inner hole is designed to be slightly undersized to create a tight friction fit on a 0.8mm metal shaft. Simply press them on firmly, and they will stay secure during high-speed rotation.
What should I do if the propeller is blowing air in the wrong direction?If the propeller is pushing air forward instead of backward, it means your motor is spinning in the wrong direction. Simply swap the positive and negative wire connections on your battery or motor driver to reverse the motor's rotation.
Can I purchase these micro propellers in bulk for a school science class?Yes, you can purchase these 46.5mm RC Micro Propellers in bulk quantities at Sun Cheong Computer Co. Ltd. (新昌電腦有限公司) in Sham Shui Po. Our physical store frequently supplies STEM educators with reliable, low-cost aviation components for classroom projects.

Target Users / Applications

STEM Educators & Students: Building custom rubber-band powered airplanes or miniature motorized hovercrafts for school physics experiments.
DIY RC Hobbyists: Upgrading the thrust output on custom-built, single-motor micro gliders using 716 coreless motors.
Miniature Boat Builders: Creating lightweight, 3D-printed RC airboats that rely on a single rear-mounted fan for forward propulsion.

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46.5mm RC Micro Propellers (2 Pcs) | 0.8mm Hole Single-Direction