Hobbywing Justock 10.5T G2.1 Sensored 4000KV Motor

Hobbywing XeRun Justock 3650 SD G2.1 10.5T 4000KV sensored fixed-timing brushless motor

The Hobbywing XeRun Justock 3650 SD G2.1 10.5T (part number 30408009) is a 2-pole, 4000 KV sensored brushless motor with fixed timing, designed for spec class racing. It is perfectly matched with the XR10 Justock ESC for all zero-timing racing, although it is also compatible with other Hobbywing and third-party ESCs. It runs on 2S to 3S LiPo batteries in 1/10 and 1/12 on-road and off-road cars.

According to the manufacturer, it is an ideal choice for Stock or Sport class racing, and also for beginners or drivers looking for a practice motor. Its aluminium can, unlike the iron can of the Justock 3650 G1, helps dissipate heat. It combines a heat-resistant magnet, double-insulated windings, high-precision bearings and a strong rotor structure for performance and durability.

The non-adjustable end bell with built-in Hall sensor, together with a high-precision balanced rotor, delivers smooth and linear power. The end bell is easy to remove for maintenance and to replace wear parts such as the rotor or the sensor module.

Hobbywing Justock 3650 SD G2.1 10.5T technical specifications

• Manufacturer part number: 30408009
• Scale: 1/10 and 1/12
• Type: brushless, sensored
• Poles: 2
• Wind: 10.5T
• KV: 4000 KV
• Batteries: 2S-3S LiPo
• No-load current: 4.9 A
• Outer diameter: 35.9 mm
• Length: 52.5 mm
• Shaft diameter: 3.17 mm
• Weight: 175 g
• Bearings (front and rear): D9.525 x D3.175 x 3.967 mm
• Timing: fixed
• Use: 1/10 and 1/12 Stock/Sport classes on-road (touring car, drift, F1, Mini) and off-road (buggy, 2WD short course and truck), and practice

Frequently asked questions

Which ESC is recommended for the Justock 3650 G2.1 10.5T?

It is matched with the Hobbywing XR10 Justock for zero-timing racing, although it works with other Hobbywing and third-party ESCs.

Can the timing of this motor be adjusted?

No. It is a fixed-timing motor with a non-adjustable end bell.

Is it suitable for beginners?

Yes. Hobbywing recommends it for Stock or Sport class racing, and also for beginners or as a practice motor.

What batteries does it run on?

2S to 3S LiPo batteries.