Gemfan 1447 Carbon Fiber Nylon Propellers - 14x4.7 Inch CW+CCW Pair for Heavy Lift

Specifications

• Diameter: 14.0 Inch (355.6mm)

• Pitch: 4.7 Inch

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

• Material: Carbon Fiber Reinforced Nylon (Matte Black)

• Center Hole Diameter: 6.0mm (Universal Hub)

• Center Thickness: ~9.8mm

• Weight: ~28.5g per propeller (~57g per pair)

• Recommended Motors: 3510, 4114, 5010 (350KV - 700KV)

Key Applications & Projects

• Heavy-Lift Multirotors: Ideal for 650mm–1000mm frames carrying DSLRs or industrial payloads.

• Agricultural Drones: Reliable, high-efficiency lift for small-scale crop spraying UAVs.

• Fixed-Wing UAVs: Massive pulling power for large-scale electric gliders and cargo planes.

Unlock New Capabilities (Project Evolution)

• Feature Upgrade: Switching to Carbon Nylon props often yields an efficiency gain of 10-15% over standard ABS, potentially adding minutes to your flight time while drastically reducing "jello" in your video feed.

• Effort Level: Beginner. Every pair includes a "universal adapter tree" to fit motor shafts from 3.17mm up to 8mm.

Package Includes:

• 1 x Gemfan 1447 Clockwise (CW) Propeller
• 1 x Gemfan 1447 Counter-Clockwise (CCW) Propeller
• 2 x Sets of Adapter Rings (Sizes: 3.17mm, 4mm, 5mm, 6mm, 8mm)

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What does "1447" stand for? "14" is the diameter in inches; "47" is the 4.7-inch pitch.

2. Are these original carbon fiber? They are a composite of high-modulus carbon fiber and nylon for the best balance of stiffness and impact resistance.

3. Will these fit my 2212 1000KV motors? No. 14-inch props will overload 2212 motors. Use them with 35mm to 50mm diameter motors (350KV–700KV).

4. Are they better than pure carbon fiber props? They are more durable in minor strikes (nylon is less brittle than pure carbon) and significantly more affordable.

5. How do I tell CW from CCW? The CW prop rotates clockwise (viewed from top) to push air down; the CCW rotates counter-clockwise.

6. Can I use these with 6S batteries? Yes, as long as your motor/ESC combo is rated for 6S with a 14-inch propeller.

7. Do they come with the center rings? Yes, universal adapter sets are included in every pair.

8. Will these help reduce camera vibration? Yes, the stiffness minimizes blade flex, which is a primary source of high-frequency vibration.

9. What is the raw center hole size? 6.0mm, adjustable via the included adapters.

10. How many props are in a pack? This is one pair (2 propellers total).

11. Do they need balancing? They are factory-balanced, but for professional cinematography, a manual check is always recommended.

12. What is the color? Matte Black.

13. Will these fit a DJI Phantom? No, those require proprietary self-tightening hubs.

14. Is the pitch too high for hovering? No, 4.7 is a standard "all-rounder" pitch for 14-inch props.

15. What is the hub thickness? Approximately 9.8mm.

16. Can I ream the hole to 10mm? Yes, but do so carefully using a prop reamer to maintain balance.

17. Are they suitable for high-speed racing? No, these are designed for efficiency and lift on large-scale drones.

18. What happens if I install them backward? Your drone will push air up and fail to lift. The logo/size markings should face the sky.

19. Can I use them on a tractor-style plane? Yes, they provide excellent static thrust for large electric planes.

20. Is there a warranty? Standard manufacturing defect warranty applies.