APISQUEEN 12V–24V 14.8kg Thrust U8 Underwater Thruster Two Set with Remote Control, for Kayaks and Paddleboards

APISQUEEN U8 Underwater Thruster Two set 

The APISQUEEN U8 Dual-Thruster Kit includes two compact underwater thrusters, specifically designed for propulsion systems in small watercraft. This kit is suitable for kayaks, inflatable boats, RC boats, Unmanned Surface Vehicles (USVs), and various other DIY marine projects, offering a practical propulsion solution for users looking to build or upgrade small watercraft.

Key Features

Dual-Thruster Configuration
Equipped with two U8 underwater thrusters, providing a dual-propulsion setup for a wide range of small watercraft and DIY marine projects.

Compact Design
The thrusters feature a compact design, making them ideal for applications where installation space is limited.

Integrated Water-Cooled ESC
The ESC is integrated within the thruster housing. This design reduces external wiring and leverages the surrounding water flow to assist with heat dissipation during underwater operation, ensuring effective thermal management.

Versatile Applications
Suitable for a variety of propulsion projects, including kayaks, inflatable boats, small vessels, RC boats, and Unmanned Surface Vehicles (USVs).

Package Contents

APISQUEEN U8 Underwater Thruster × 2
Control Box × 1
Remote Controller × 1 (Optional)

Comparison of A300 and W300 Remote Controls

A300 Remote Control: Offers a control range of up to 200 meters and includes a cruise control function. This remote is not waterproof and is intended for use in dry environments.

W300 Waterproof Remote Control: Provides an extended control range of approximately 250–500 meters. It features a waterproof design, capable of withstanding submersion up to a depth of 1 meter. It includes a cruise control function, and the accompanying receiver supports automatic heading correction, which helps maintain a straight course. To ensure proper operation, the receiver (housed within the system's control box) must be installed in a horizontal position.

Which one should you choose? If you require standard remote operation over shorter distances, choose the A300. If you need waterproof capabilities and a longer control range for operating a vessel, choose the W300.

U8 Thruster Dimensional Drawing

Technical Specifications

U8 170KV Supported Voltage: 12–25.2V (3–6S LiPo battery)
U8 290KV Supported Voltage: 12–20V (3–5S LiPo battery)

Model: U8 Underwater Thruster Two Set
Voltage: 12–24V (3–6S LiPo battery)
Maximum Current (per set): 56A
Maximum Thrust (per set): 14.8 kg
Maximum Power (per set): 1500W
Dimensions (single thruster): 128 × 101 mm

U8-170 Specifications：

Max. Rated Depth: 300 meters
Rated Mechanical Endurance: > 200 hours
Max. Power (Without Mesh Guard): 300 W
Max. Power (With Mesh Guard): 335 W
Full Throttle Current at 6S (Without Mesh Guard): Forward 11.9 A, Reverse 12.4 A
Full Throttle Current at 6S (With Mesh Guard): Forward 13.2 A, Reverse 13.3 A
Full Throttle Thrust at 6S (Without Mesh Guard): Forward 5.6 kgf, Reverse 5.3 kgf
Full Throttle Thrust at 6S (With Mesh Guard): Forward 3.2 kgf, Reverse 3.1 kgf
Supply Voltage Range: 10–25.2 VDC
Rated Voltage: 24 V / 6S LiPo Battery
Rated Power: 270 W
24 V Forward Thrust Performance: 5.3 kgf / 266 W / 11.1 A
24 V Reverse Thrust Performance: 4.6 kgf / 254 W / 10.57 A
Operating Temperature Range (Air): -25°C to 60°C
Operating Temperature Range (Water): -10°C to 40°C
Threaded Insert Material: 316 Stainless Steel
Mounting Hole Thread Specification: 4 x M3 + 1 x M6
Mounting Hole Spacing: 19 x 19 mm
Cable Length: approximately 900 mm
Cable Specification: 3 x 16 AWG
Sealing Method: Full Resin Encapsulation / Potting
Motor Type: Brushless Outer-Rotor Motor

ABOUT PWM 

PWM full name is (Pulse-width modulation). It is also called duty cycle signal, which indicates the proportion of the high level duration to the whole signal period. 2ms for the whole period of PWM, 1.5ms stop, 1.5-2ms forward, 1.5-1ms reverse.

From the diagram, we can clearly see that when PWM is 75% (1.5ms), the motor stops rotating, when PWM is 50% (1ms), the motor rotates in reverse, and when PWM is 100% (2ms) the motor rotates in forward.Of course ESC will not only make the motor turn forward and reverse, but can adjust the speed of motor rotation by the duty cycle size of PWM. When the PWM is gradually changed from 75% to 50%, the motor will keep reversing and accelerating from stop until the reverse rotation reaches the maximum. And when PWM is gradually changed from 75% to 100%, the motor is continuously accelerated from stop to forward until the forward rotation reaches the maximum value. That is, PWM is a signal that can be continuously varied, and the effective range is from 50% to 100%.

The frequency of PWM signal is 50hz, 100hz, 200hz or 500hz, etc. The higher the control frequency, the shorter the period, the shorter the control interval, and the faster the ESC and motor response speed The faster the ESC and motor response. Conversely, the lower the control frequency, the longer the period, the longer the control interval, and the slower the ESC and motor response.

170 kV/290 kV Test Meter (Single Thruster)