Knowledge — propeller

With the massive rise of electric water sports, more and more people are looking to motorized setups to upgrade their time on the water. Whether you want to buy an underwater thruster for a SUP, convert a fishing kayak into an electric watercraft, or build a custom DIY electric boat, adding a propulsion system changes the game. But for first-time buyers, browsing product specs can be overwhelming. How much thrust do I actually need? Should I go with a 24V or 48V underwater thruster? What is an ESC, and what is the difference between FOC and PWM? We aren't going to...

When choosing an underwater thruster, most people focus on thrust, voltage, and waterproof depth. However, there is a core component that often gets overlooked but determines your noise level, handling smoothness, and battery life—the Electronic Speed Controller (ESC). Currently, the two mainstream driving technologies on the market are PWM (Pulse Width Modulation) and FOC (Field-Oriented Control). Today, we will dive deep into the differences between them and compare the ApisQueen U10 and U92 Pro to see which solution fits your project best. 1. What is a PWM ESC? (The Traditional Choice) PWM driving typically uses a "six-step commutation" method. Simply put,...

As a supplier of underwater equipment such as underwater propulsion, APISQUEEN specializes in solving underwater related problems for water sports enthusiasts. Today, APISQUEEN brings you a complete installation tutorial for the professional-grade U01 underwater thruster twin-engine kit. This set includes: ①APISQUEEN U01 underwater thrusters × 2 (IP68 waterproof rating)②45A brushless ESC × 2 (optional fully waterproof/splashproof version)③A300 professional underwater remote controller (2.4GHz frequency band)④Power supply module (supports 5-25V input)⑤1:3 power adapter cable ①②Thruster dockingConnect the three-phase line of the U01 thruster to the 45A ESC interface     ③Control system constructionConnect the ESC signal line to the A300 remote controller...

As a professional underwater propulsion system supplier, APISQUEEN explains the key technical differences of splashproof ESC. Our 30A splashproof bidirectional ESC and 80A splashproof unidirectional ESC have been successfully applied in special equipment fields such as underwater robots and submersible thrusters. 1. Bidirectional ESC Operation Guide (Taking APISQUEEN 30A splashproof bidirectional ESC as an example) Recommended application: underwater operation scenarios that require precise reverse control Use 16V power supply to connect 30A splashproof ESC Connect the propeller three-phase line through the waterproof connector Pay attention to the white line direction mark when the signal line is connected to the receiver...

What to do if the underwater thruster unit suddenly stops working? Generally, both propellers are not working or only one propeller is working. Case 1: Both thrusters do not rotateThere are several possibilities: 1. The power connection is poor. There is no prompt sound when connecting the power. You can check whether there is a voltage display on the remote control screen. If it is 00.0v, the power is not connected properly.Please reconnect the power supply. The thruster will make a prompt sound. The remote control screen will display the current battery voltage. Then try to push the joystick to...