How to choose the right propeller for an RC aircraft
Diameter, pitch, motor load, current measurement and how propeller choice changes thrust, speed, efficiency and heat.
Propeller 12x3.8 CW 2B MC is a Carbon multicopter propeller from Mejzlik Propellers, prepared for RC-MODEL customers with practical fitment guidance, structured specifications, product imagery and no supplier pricing.
Use this item for multicopter, uav and vtol propulsion. The key size reference is 12x3.8 inches. Confirm diameter, pitch, rotation, blade count, hub/backplate fitment, engine or motor load, RPM range and airframe clearance before ordering.
Carbon propeller selection should consider the complete propulsion setup: motor or engine power, battery voltage or displacement, expected RPM, thrust requirement, mounting pattern, balancing and safety margin. RC-MODEL can help verify the correct part when you provide the aircraft/UAV setup and part number.
Technical data: no matching public datasheet was listed for reference 2120381.
Reference part number: 2120381. This page is part of the official MEJZLIK catalog coverage at RC-MODEL.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
Diameter, pitch, motor load, current measurement and how propeller choice changes thrust, speed, efficiency and heat.
A safety and performance guide to propeller balance, spinner fit, bent shafts, motor mounts, firewall checks and protecting electronics from vibration.
A step-by-step safety guide for measuring amps, watts and voltage sag so customers avoid overheating motors, ESCs and LiPo batteries.
A practical guide to motor KV, voltage, current, thrust, aircraft weight and flight style so the power system matches the model.
Ground checks, takeoff planning, trim passes, battery timing and first landing strategy for a new or repaired RC aircraft.
Embedded video for convenient viewing directly on the product page.
| Technical Specifications | |
| Manufacturer | Mejzlík Propellers s.r.o |
| Brand | MEJZLIK |
| Part No. | 2120381 |
| Product Type | Carbon multicopter propeller |
| Application | Multicopter, UAV and VTOL propulsion |
| Availability | On demand |
| Source Catalog | MEJZLIK 2025 Carbon Fiber Propellers design list |
| Catalog Revision | 19.9.23 |
| Diameter (in) | 12 |
| Pitch (in) | 3.8 |
| Diameter (mm) | 304.8 |
| Blade Count | 2 |
| Rotation | CW |
| Construction | Carbon fiber composite propeller from MEJZLIK |
| Datasheet | Not listed in MEJZLIK public data page |
| Performance Data | Not listed in MEJZLIK public data page |
| Video | MEJZLIK manufacturing technology video embedded |
| Series / Variant | MC |
Tags: MEJZLIK, Propeller 12x3.8 CW 2B MC, Carbon multicopter propeller, Multicopter, UAV and VTOL propulsion, Engines & Power, MEJZLIK Carbon Propellers, Multicopter & VTOL Propellers, 2-Bladed Propellers
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