Surpass Hobby 3665 ROCKET Sensorless Waterproof Motor 1550KV - 5.0mm Shaft, Gold Plated Connectors

Name: Surpass Hobby 3665 ROCKET Sensorless Waterproof Motor 1550KV - 5.0mm Shaft, Gold Plated Connectors
Brand: Surpass Hobby
SKU: DRFC-2796
Price: 2639.00 INR
Availability: OutOfStock

₹2,639.00 (Inclusive of all taxes)

Out of Stock

The Surpass Hobby 3665 ROCKET is a high-torque, sensorless waterproof brushless motor rated at 1550KV, designed for demanding multirotor and heavy-lift UAV applications. It features a 5.0mm shaft, gold-plated connectors, and supports operation up to 32V (8S LiPo) for robust power delivery.

Features

1550KV sensorless brushless motor optimized for high-torque, low-RPM applications.
Waterproof construction with sealed bearings for reliable operation in wet or dusty environments.
High-purity copper windings and precision-balanced rotor for maximum efficiency and smooth power delivery.
Supports high-voltage operation up to 32V (8S LiPo) with a maximum current of 45A.
Features a robust 5.0mm output shaft and gold-plated connectors for superior electrical connectivity.

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Description

Engineered for durability and high-performance, the Surpass Hobby 3665 ROCKET motor utilizes a sensorless design that eliminates hall sensors, reducing failure points and simplifying integration. Its 4-pole internal rotor is precision-balanced to minimize vibration, which is critical for flight stability and FPV video clarity.

The motor’s construction incorporates oversized ABEC-5 grade bearings and a fully sealed housing, making it resistant to water, dust, and debris. This makes it an ideal propulsion unit for heavy-lift cinematography drones, agricultural UAVs, and large-scale FPV platforms where reliability under varying conditions is paramount.

Key Features

Sensorless Design: Eliminates hall sensor wiring and potential points of failure for a more robust and simpler setup.
Waterproof & Sealed Construction: Protects internal components from moisture, dust, and debris, ensuring longevity.
High-Purity Copper Windings: Maximizes electrical efficiency and thermal performance for sustained high-power output.
Precision-Balanced Rotor: Minimizes mechanical vibration, leading to smoother flight and reduced wear on bearings.
Gold-Plated Connectors: Provide excellent corrosion resistance and maintain low-resistance electrical connections.
High-Voltage Capable: Rated for operation up to 32V, suitable for 6S and 8S LiPo battery configurations.
Multi-Mount Compatibility: Universal mounting pattern fits standard M3 and M4 screw configurations for flexible installation.

Applications

Heavy-lift cinematography and mapping drones requiring high torque and reliability on 6S-8S LiPo systems.
Large-scale FPV freestyle and racing quadcopters where a lower KV and high voltage provide efficient power.
Industrial and agricultural UAV platforms that operate in dusty or damp environments.
Custom multirotor builds for payload carrying, such as survey equipment or delivery mechanisms.

Technical Specifications

Model Number	3665
Motor Type	Sensorless Brushless Outrunner
KV Rating	1550 KV
Pole Count	4
Max Working Voltage	<32V
Maximum Current	45A
Shaft Diameter	5.0mm
Connector Type	Gold-Plated Bullet Connectors
Mounting Pattern	Universal (M3/M4)
Construction	Waterproof

Frequently Asked Questions

What is the maximum recommended battery configuration for this 3665 1550KV motor?

The motor is rated for a maximum working voltage of less than 32V. This makes it suitable for 6S (25.2V nominal) and 8S (33.6V peak) LiPo battery packs. Always ensure your Electronic Speed Controller (ESC) is also rated for the corresponding cell count and voltage.

Is this a sensored or sensorless brushless motor, and what are the implications for my build?

This is a sensorless motor. It does not require hall sensor feedback wires, simplifying wiring and eliminating a potential point of failure. Sensorless motors provide excellent high-RPM performance but may have slightly less smooth low-speed operation compared to sensored motors, which is generally acceptable for most multirotor applications.

What does the 'waterproof' designation mean for this motor?

The waterproof construction indicates the motor housing and bearings are sealed to protect against ingress from water, dust, and debris. This allows for reliable operation in damp grass, light rain, or dusty environments, making it ideal for agricultural drones, coastal filming, or all-weather FPV flying.

What size propellers are suitable for this 1550KV motor on a multirotor?

For multirotor use on 6S-8S systems, this low-KV, high-torque motor is typically paired with large-diameter, high-pitch propellers (e.g., 15x5, 16x5.5, or 17x6 inches) common on heavy-lift and large cinematic drone platforms. Always use a propeller thrust calculator and ensure your ESC can handle the expected current draw.