Gemfan 9047 Carbon Fiber Nylon Propellers - 9x4.7 Inch CW+CCW Pair for Multi-Rotor

Specifications

• Diameter: 9.0 Inch (228.6mm)

• Pitch: 4.7 Inch

• Rotation: 1 x Clockwise (CW) + 1 x Counter-Clockwise (CCW)

• Material: Carbon Fiber Reinforced Nylon (Matte Black)

• Centre Hole Diameter: 6.0mm (Universal Hub)

• Hub Thickness: ~10.2mm

• Weight: ~11g per propeller (~22g per pair)

• Recommended Motors: 2212, 2213, 2216 (800KV - 1100KV)

Key Applications & Projects

• DJI F450/F550 Style Builds: The most popular upgrade for standard 450mm quadcopters.

• Cinematic Drones: Provides the stability required for 2-axis and 3-axis gimbal systems.

• Fixed-Wing Models: Excellent for mid-sized park flyers and long-range gliders requiring a 9-inch prop.

Unlock New Capabilities (Project Evolution)

• Feature Upgrade: The "9047" profile is deeper than the "9045," offering slightly more torque and lift, which is ideal for drones carrying heavier batteries or search-and-rescue equipment.

• Effort Level: Beginner. Each pair includes a specialized "adapter tree" to ensure compatibility with motor shafts from 3mm to 8mm.

Package Includes:

• 1 x Gemfan 9047 Clockwise (CW) Propeller
• 1 x Gemfan 9047 Counter-Clockwise (CCW) Propeller
• 2 x Sets of Adapter Rings (Standard sizes: 3mm, 3.17mm, 4mm, 5mm, 6mm, 8mm)

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What does "9047" stand for? "90" indicates the 9.0-inch diameter; "47" indicates the 4.7-inch pitch.

2. Are these better than the DJI self-tightening props? These are more rigid, but they are designed for standard threaded motor shafts, not the proprietary DJI keyed shafts.

3. Will these fit my 920KV motor? Yes, 920KV–1000KV is the ideal power band for 9-inch propellers.

4. How do I tell CW from CCW? The CW prop rotates clockwise (viewed from top) to push air down; usually marked as "9047R" or "9047P."

5. Can I use these with 4S LiPo? Yes, provided your motor and ESC are rated for 4S with a 9-inch prop.

6. Are they durable in a crash? Carbon-Nylon is very tough but less flexible than standard nylon; they are more likely to stay in shape during small strikes but may snap under high impact.

7. Do they come with the adapter rings? Yes, every pair includes two sets of spacers to fit various shaft sizes.

8. Will these help with vibration? Yes, the carbon reinforcement minimizes blade flex, which is a major source of low-frequency vibration.

9. What is the center bore size? The raw bore is 6mm, which can be adjusted with the rings or reamed to 8mm.

10. How many propellers are in the pack? You get 1 pair (2 propellers total).

11. Do these props work for 3D flight? They are designed for standard multi-rotor flight, not for reversible 3D-FPV.

12. What is the color? They are matte black.

13. Will they reduce my motor heat? Often yes, as a stiffer prop is more efficient and requires less "correction" from the flight controller.

14. Can I use them on a boat? No, these are air-screws; they are not designed for the high-density load of water.

15. Are they factory balanced? Gemfan props are pre-balanced, but we always suggest a final check for professional cinematic use.

16. Is 4.7 pitch too high for wind? No, 4.7 provides good "bite," making it quite stable in light to moderate breezes.

17. What happens if I use them backward? They will push air upwards and your drone will not lift; always check the CW/CCW markings.

18. Can I use these on 1000KV motors? Yes, 1000KV on 3S with 9-inch props is a classic and reliable setup.

19. What is the hub thickness? Approximately 10.2mm.

20. Can I use these for a pusher plane? Yes, just ensure the leading edge is facing the direction of rotation.