The AXI 4120/20 V3 LONG is a high-performance brushless outrunner motor, designed specifically for large sailplanes up to 5000g. Built with neodymium magnets and a precision-engineered rotating case, it delivers exceptional torque, efficiency, and durability.
Featuring a hardened steel shaft supported by three ball bearings, this motor ensures smooth operation and a long service life. The lightweight yet robust construction allows it to efficiently turn large-diameter, high-pitch propellers, making it an ideal choice for competition sailplanes and large electric aircraft.
This motor has been optimized for use with 5S and 6S Li-Poly battery setups, providing powerful and efficient performance under demanding flight conditions.
AXI 4120/20 V3 LONG Brushless Motor – High Torque & Efficiency
The AXI 4120/20 V3 LONG is designed for high efficiency and reliability, offering smooth power delivery and excellent torque output. Thanks to its low internal resistance and advanced cooling design, it provides stable and consistent operation while minimizing heat buildup.
This motor is perfect for large-scale RC sailplanes up to 5000g, providing reliable power and smooth operation.
✔ Recommended setup for 4000g sailplanes:
• Battery: 5S Li-Poly
• Max Current: 52A / 60s
• ESC: 40A Opto
• Propeller: 15”x8”
✔ Recommended setup for 5000g sailplanes:
• Battery: 5S Li-Poly
• Max Current: 52A / 60s
• ESC: 70A Opto
• Propeller: 17”x8”
✔ Also suitable for glow engine conversion, equivalent to:
• 7.5 - 9ccm / .46 - .54 2-stroke / .65 - .75 4-stroke