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3650-size brushless motor with 120A waterproof ESC combo

WUQ

WUQ 3650 3900KV Waterproof Brushless Motor 120A ESC Combo Set car electronics accessory

SKU CH-CGC0-8VADX

Waterproof brushless motor and 120 A ESC combo delivers 900 W, handles 2–3S Li-Po packs, and includes low-voltage, over-heat and signal-loss protection

  • TypeBrushless Motor
  • 900 W brushless power delivers strong acceleration
  • 120 A continuous ESC current handles sustained loads
  • Waterproof and dustproof construction survives all-weather races
  • Multiple protections prevent damage from low voltage, heat and signal loss
  • Compatible with 2-3S Li-Po and 4-9S Ni-Mh packs

1/10 RC Brushless Power System

This WUQ combo pairs a 3650-size 3900KV brushless motor with a 120A waterproof ESC for 1/10 scale cars and trucks. The motor delivers 900W output through a 4-pole 12-slot design with copper windings and dual ball bearings. The ESC provides continuous 120A current with 320A burst capability and a 5.8V 3A BEC output. Both components feature waterproof and dustproof construction for all-weather operation.

Upgrade From Brushed or Lower-KV Setups

The combo replaces stock brushed systems or lower-KV brushless units when more torque and efficiency are needed for 1/8, 1/10, and 1/12 scale vehicles. The jump is worth it when your current electronics limit acceleration or overheat under sustained load. The ESC includes low-voltage cut-off, overheat protection, and throttle signal loss protection for safer operation. Note that 3S Li-Po use requires a motor below 3000KV, making this 3900KV unit optimal for 2S packs.

Integration Requirements and Benefits

The set includes motor and ESC with T-plug male power connectors, requiring a compatible 2-3S Li-Po or 4-9S Ni-Mh/Ni-Cd battery not included. A separate programming card is needed for ESC configuration and is not supplied in the package. The waterproof design frees you from weather concerns during outdoor racing or bashing sessions. Precision rotor balancing reduces vibration stress on drivetrain components while maximizing RPM potential.

Highlights

  • 900 W brushless power delivers strong acceleration
  • 120 A continuous ESC current handles sustained loads
  • Waterproof and dustproof construction survives all-weather races
  • Multiple protections prevent damage from low voltage, heat and signal loss
  • Compatible with 2-3S Li-Po and 4-9S Ni-Mh packs

Specifications

TypeBrushless Motor

Questions about this item

What motor dimensions and mount pattern does the 3650 3900KV motor use for a 1/10 RC car?

The motor follows the standard 3650 size used on most 1:10 trucks, with a 4-pole 12-slot rotor and dual ball bearings for direct mounting.

How do I connect the ESC to the battery and motor, and which step is often missed?

Solder the included T-plug male lead to your 2-3S Li-Po or 4-9S Ni-MH pack, then connect the three motor wires; the step often missed is setting the low-voltage cut-off for the exact cell count before the first run.

When should the motor or ESC be serviced or replaced after hard use?

Inspect the dual ball bearings and rotor balance after every few high-amp runs; replace the motor if KV drops toward the 3000KV limit for 3S packs, and swap the ESC if sustained current exceeds the 120A continuous or 320A burst ratings.

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