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click thumbnail to enlarge photos of AXi 4120/18 v2

Latest v2 edition of the AXi 4120/18, including radial mounting kit and prop adaptors. These latest version 2 motors from the legendary Model Motors factory in Czech Republic are the culmination of 15 years experience producing some of the finest brushless motors in the world, offering up to 2% more power and 20% less heat than the existing motors. The 4120/18 is the all-round gem of the 4120 series electric motors, designed for 4-6s operation and providing a peak output of 1400W for a variety of different radio-controlled model aeroplanes.

The 4120/18 is suitable for slow-flying or trainer type models up to 3.8kg (134oz), 3D models up to 2.9kg (102oz) and powered gliders or sailplanes up to 4.5kg (158oz).

A radial mounting kit and prop adaptors for front and reverse mounting of this motor are included in the box.

Please refer to the diagrams in the photos above for exact dimensions.

All AXi motors are produced by Model Motors in Czech Republic.

Other AXi motors in this series: AXi 4120/14 v2AXi 4120/20 v2

Recommended brushless power setups for AXi 4120/18 v2.
Need help finding a brushless motor setup? Try our motor calculator tool.

Model Model Weight Cells Max. Current Jeti ESC Propeller
Trainer 3800g (134.0oz) 5s 55.0A/60s Jeti Spin Pro 75 Opto 14" x 9"
Aerobatic 3500g (123.5oz) 5s 55.0A/60s Jeti Spin Pro 77 Opto 14" x 8"
3D 2600g (91.7oz) 5s 55.0A/60s Jeti Spin Pro 75 Opto 15" x 8"
3D 2300g (81.1oz) 4s 55.0A/60s Jeti Spin Pro 75 Opto 17" x 8"
3D 2900g (102.3oz) 6s 55.0A/60s Jeti Spin Pro 77 Opto 14" x 7"
Sailplane 4300g (151.7oz) 4s 55.0A/60s Jeti Spin Pro 75 Opto 17" x 9"
Sailplane 4500g (158.7oz) 5s 55.0A/60s Jeti Spin Pro 75 Opto 15" x 9.50"

Do not exceed the recommended propeller sizes.

Technical Details for AXi 4120/18 v2

No. of cells (LiPo)5-7
RPM/V515 Kv
Max. Efficiency86%
No load current1.5A
Maximum Load55.0A
Internal Resistance0.700Ω
Diameter49.00mm (1.93")
Length54.00mm (2.13")
Shaft Diameter6.00mm (0.24")
Max. Efficiency Current15-40A (>82%)
Glow Equivalent7,5 ccm / .46 - 2stroke .65 - 4stroke
Weight315.0g (11.1oz.)
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