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click thumbnail to enlarge photos of AXi 4120/20

The AXi 4120/20 Gold Line brushless motor has been developed especially for use with 5s and 6s lipo cells for 3D models up to 3500g and for sailplanes up to 5000g in weight. The unique design of this motor gives extremely high torque levels to turn large diameter and high pitch propellers with a high level of efficiency. The AXi 4120/20 makes a superb and lighter-weight alternative to the Hacker A50 on 5 or 6s in 3D models up to 3,500g (123oz) such as the Extreme Flight Extra 300 58".

With neodymium magnets and a rotating case, AXi motors are manufactured using the latest technology from the finest quality materials. The hardened steel shaft supported by three ball bearings, and overall robust yet lightweight construction, ensure a long service life.

AXi motors are designed such that the prop is mounted on the shaft, but a radial mount set is available as an option, to allow the motor to be mounted directly onto the firewall. This optional radial mount set includes: mounting flange, propeller adaptor, a securing collar and screws.

The AXi 4120/20 is a great motor for 50e sized models such as the SebArt Angel 50e but also performs superbly in 3D models up to 3,500g (123.5oz) on 5s and 6s Li-Po batteries with 15" and 16" propellers.

Box Contents: -

  • AXi 4120/20 Brushless Motor
  • Specification sheet and manual

Not included with the AXi 4120/20: -

  • Prop adaptor (PH6 recommended) – not required if using radial mount set
  • Radial mount set (RMS41 recommended)
  • Connectors

Please retain the box and manual with your motor for any warranty claim.

Other AXi motors in this series: AXi 4120/14AXi 4120/14 Short-ShaftAXi 4120/18AXi 4120/20 MultiCopter Motor

Recommended brushless power setups for AXi 4120/20.
Need help finding a brushless motor setup? Try our motor calculator tool.

Model Model Weight Cells Max. Current Jeti ESC Propeller
Trainer 4000g (141.1oz) 5s 52.0A/60s Jeti Advance 70 Pro Opto 15" x 8"
Aerobatic 3300g (116.4oz) 5s 52.0A/60s Jeti Advance 70 Pro Opto 15" x 10"
3D 3200g (112.9oz) 5s 52.0A/60s Jeti Advance 70 Pro Opto 16" x 8"
3D 3500g (123.5oz) 6s 52.0A/60s Jeti Spin Pro 80 15" x 8"
Sailplane 5000g (176.4oz) 5s 52.0A/60s Jeti Advance 70 Pro Opto 17" x 8"

Do not exceed the recommended propeller sizes.

Technical Details for AXi 4120/20

No. of cells (LiPo)5-6
RPM/V465 Kv
Max. Efficiency87%
No load current1.5A
Maximum Load52.0A
Internal Resistance0.082Ω
Diameter50.00mm (1.97")
Length56.00mm (2.20")
Shaft Diameter6.00mm (0.24")
Max. Efficiency Current
Glow Equivalent.46-.54 2st / .65-.75 4st
Weight320.0g (11.3oz.)

Cracking motor
5/5 stars
By Shahid Banglawala
Dead smooth, pulls fantastic on a 16 x 10 APC prop, will try a 16 x 8 later. Hauls a 2.6kg 63" Angel 50 pattern model with ease through the Masters/P-09 schedule, drawing about 65-70 amps.

All that on a 5 cell pack, no need for 6s here!

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