APC 21.5x13 EPNC Carbon Electric Pattern Propeller – Lightweight F3A RC Prop
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APC 21.5x13 EPNC Carbon Electric Pattern Propeller
The APC 21.5x13 EPNC Carbon Electric Pattern Propeller is a lightweight, high-efficiency propeller developed for electric-powered precision aerobatic aircraft, F3A competition airplanes, and advanced RC pattern flying. This EPNC series propeller uses APC’s lightweight carbon/composite material blend to reduce rotating mass while maintaining excellent stiffness and smooth flight performance.
Compared to standard APC composite propellers, the EPNC series incorporates carbon reinforcement to help lower weight and improve throttle response for modern electric RC aircraft.
Key Features
- 21.5x13 electric pattern propeller
- Lightweight carbon/composite APC EPNC design
- Thin electric hub configuration
- Designed specifically for electric motors
- Reduced rotating mass for smoother throttle response
- Excellent for F3A, precision aerobatics, and pattern aircraft
- High-efficiency blade design for electric power systems
- Strong stiffness and low vibration characteristics
Specifications
| Brand | APC |
| Propeller Size | 21.5x13 |
| Series | EPNC Carbon Pattern Electric |
| Diameter | 21.5 inches |
| Pitch | 13 inches |
| Material | Carbon / Composite Blend |
| Hub Style | Thin Electric Hub |
| Application | Electric RC airplanes |
| Best Use | F3A, pattern flying, precision aerobatics, giant-scale electric aircraft |
Why Choose the APC EPNC Series?
The APC EPNC line was developed to provide electric RC pilots with a lighter propeller option while maintaining the precise blade geometry and efficiency APC is known for. By reducing rotational weight, the propeller can improve throttle transitions, braking feel, and overall aircraft response.
This makes the APC 21.5x13 EPNC especially popular among:
- F3A competition pilots
- Precision aerobatic aircraft builders
- Advanced electric sport pilots
- Pattern airplane setups requiring smooth throttle management
- Pilots seeking lighter alternatives to heavier carbon fiber props
Recommended Aircraft Applications
- F3A competition airplanes
- Electric pattern aircraft
- Precision aerobatic RC airplanes
- Large electric sport aircraft
- IMAC-style electric setups
- Giant-scale electric RC airplanes
Important Installation Notes
- Designed for electric motors only
- Always balance the propeller before use
- Inspect for cracks or shipping damage prior to installation
- Use proper adapters and hub spacing hardware
- Confirm motor, ESC, and battery compatibility before operation
- Check current draw with a watt meter after installation
Frequently Asked Questions
What does EPNC mean?
EPNC refers to APC’s lightweight carbon/composite electric pattern propeller series designed for precision electric aerobatic aircraft.
Is this propeller lighter than a standard APC prop?
Yes. The EPNC series uses carbon reinforcement to reduce overall rotating weight compared to standard APC composite propellers.
Can this propeller be used on gas engines?
No. The APC EPNC series is intended for electric motor applications only.
What type of airplanes use a 21.5x13 propeller?
This size is commonly used on F3A pattern aircraft, precision aerobatic RC airplanes, and larger electric competition aircraft.
Why do F3A pilots use lightweight propellers?
Lighter propellers can improve throttle response, braking consistency, and aircraft smoothness during precision maneuvers.
What’s Included
- One APC 21.5x13 EPNC carbon electric pattern propeller
Motor, spinner, adapters, mounting hardware, and aircraft are not included unless otherwise stated.