Rocket Supersonic 3650/3660/3665/3670/3674 4-Pole Sensorless Inrunner Brushless Motor | Upgrade for 1/10 RC Buggy, Monster Truck & On-Road Car DJ007

Product Introduction

• Rocket Supersonic series features 4-pole sensorless inrunner brushless motors available in five frame sizes: 3650, 3660, 3665, 3670 and 3674. Designed exclusively for 1/10 scale RC vehicles including buggies, monster trucks, on-road cars and short course trucks. Adopting a 4-pole rotor layout for abundant power output and wide RPM range, the motor comes with built-in temperature sensor port and supports 2S–4S LiPo batteries, serving as an ideal OEM power upgrade replacement for stock RC builds.

Basic Information

• Brand: Rocket
• Product Line: Supersonic Series 36XX 4-Pole Sensorless Inrunner Brushless Motor
• Motor Spec: 36mm diameter 4-pole inrunner brushless motor
• Applicable Models: 1/10 RC buggy, monster truck, on-road car, short course truck
• Available Sizes & KV Ratings
  3650: 3250KV / 4350KV / 4700KV / 5600KV
  3660: 2800KV / 3200KV / 3600KV / 4250KV
  3665: 2200KV / 2750KV / 3150KV / 3800KV
  3670: 1800KV / 2260KV / 2380KV / 2750KV
  3674: 1650KV / 2000KV / 2150KV / 2500KV

Dimensions & Weight
Uniform Outer Diameter: 36mm

• 3650: Total Length 50mm, Shaft 3.175mm, Net Weight 188g
• 3660: Total Length 60mm, Shaft 3.175mm
• 3665: Total Length 65mm, Shaft 3.175mm
• 3670: Total Length 70mm, Shaft 3.175mm
• 3674: Total Length 74mm, Shaft 3.175mm
• Temperature Sensor Wire: Separate dedicated temp-sensing cable included

Electrical Specifications

• Continuous / Burst Current
  3650 (3250KV): 4.2A Continuous / 105A Burst; 3650 (5600KV): 5.6A Continuous / 130A Burst
  3660: 5.0A Continuous / 130A Burst
  Internal Resistance
  3650(3250KV): 0.0068Ω | 3650(5600KV): 0.0051Ω | 3660: 0.0038Ω
  Battery Compatibility
  3250KV/2200KV: Max 15.3V (2S–4S LiPo)
  3200KV: Max 11.1V (2S–3S LiPo)
  5600KV: Max 8.7V (2S LiPo)
• Cooling Fan: No fan, passive cooling via casing vents
• Rated Voltage: Variable 2S–4S LiPo based on KV grade
• Max No-load RPM: 50,000RPM

Construction & Materials

• Motor Can: CNC precision-machined 6061-T6 high-hardness aluminum housing with surrounding vent holes for airflow cooling
• Windings & Stator: High-temperature high-purity copper windings + 0.2mm thickened silicon steel laminations to reduce power loss and heat generation
• Rotor & Shaft: Explosion-proof 4-pole silicon steel rotor with high-density magnets; high-toughness alloy steel output shaft
• Bearings: Premium dual ball bearings for smooth rotation and low running noise
• Structure: Modular split design for easy disassembly, cleaning and maintenance; rear pre-reserved port for external temperature sensor to pair with temp-controlled ESC
• Connector: Pre-installed gold-plated 4mm banana plugs for superior anti-oxidation and conductivity

Key Features

• 4-pole rotor design delivers stronger low-speed torque and more powerful high-end output vs conventional 2-pole motors, suitable for both crawling and racing applications.
• Multiple can lengths and KV selections available: Low-KV versions feature massive torque for monster trucks & crawlers; High-KV variants offer high RPM for on-road racing.
• Built-in temperature sensor terminal works with matching thermal-controlled ESC to monitor real-time motor temperature and avoid overheating demagnetization.
• Standard 36-size 540 mounting footprint with six M3 mounting holes for direct drop-in fitment into stock motor mounts without chassis modification.
• Detachable split structure allows convenient removal of dirt & sand to extend motor service life.
• Factory pre-fitted 4mm gold-plated plugs to eliminate extra soldering work for quick wiring.

Compatible Vehicles

• Perfect for power upgrade of all 1/10 RC monster trucks, off-road short course trucks, on-road cars and desert trucks.