E-Tech Electric WG Inboard Motors

Excellence in Electric Boat Motor Propulsion

Mounting & Integration Essentials

  • Easy Replacement: The motor is designed for simple installation, utilizing standard flexible adjustable motor mounts, making it an ideal choice to replace existing diesel engines.
  • Adaptable Foundation Fit: The motor mount is crafted to seamlessly align with existing foundations, ensuring a hassle-free integration process.
  • Cooling System Flexibility: The closed circuit cooling system operates with regular coolant and offers two configurations: inboard cooling with cooler and fans and outboard cooling through a heat exchanger.
  • Custom Shaft Coupling: A custom-made fixed propeller shaft coupling is provided to effortlessly connect with the existing propeller shaft.
  • Durability & Protection: The motor boasts an IP65 rating, ensuring it remains protected against dust and water splashes.
  • Optional Inline Mounting:

    The motor can be positioned inline with a diesel engine post-gearbox. In these configurations, a double shaft motor and a custom-made flange are provided for seamless gearbox integration. Equipping the motor with a recharging function is advised, permitting battery recharging during diesel usage. An added advantage of this setup is that there’s no limitation to the motor size. As it acts as an additional motor, it aids in fuel savings and offers an extra layer of safety

7 WG Inboard Electric Motor, E-Tech Drives, 48V DC Motor, Electric Boat Drive, Electric Boat Propulsion.

Key Features

  • High Torque & Efficiency BLDC PM Technology: Benefit from up to 90% efficiency across the propulsion system, no maintenance requirements, and seamless Plug & Play installation.
  • Universal Shaft and Counter Rotating Propellers: Designed for optimal performance, compatibility, and balance, ensuring smooth sailing for every sailor.
  • Customization and Diagnostics via Bluetooth: Control, customize, and monitor your drive system effortlessly using an Android app.
  • Regeneration Function: Each motor can be equipped with a unique regeneration function. This allows your batteries to recharge while you’re sailing, maximizing your boat’s operational duration.
  • Hybrid Setup Compatibility: If you’re using another motor, our system can operate in a hybrid setup, ensuring consistent battery recharging.

E-Tech Electric WG Inboard System: Technical Specifications


Motor Power: Ranging from 4kW for lighter applications to a potent 20kW for demanding conditions. Whether you’re cruising coastal waters or venturing into the open sea, there’s an E-Tech drive calibrated for your needs.

Operating Voltage: Our versatile drives can operate across a broad voltage spectrum from 48V to 96V, ensuring compatibility with a range of power sources and setups.

Battery Compatibility: The beauty of our system lies in its adaptability. While there’s no limit to battery size, it’s essential to note that the voltage should align with the motor’s nominal system. Our system boasts flexibility by accommodating batteries that may have higher or lower voltages than nominal. However, any deviation should be consulted with a specialist to ensure optimal performance and safety.

E-Tech WG Inboard: A Complete Propulsion Solution

Making the transition from conventional to electric boating has never been easier. Unlike other offerings in the market, where essential components like displays and throttles come as separate, often costly add-ons, our drives systems provide a holistic propulsion kit. With our complete system, the only external components you’ll need are batteries, chargers, and propellers. Everything else is bundled for your convenience:
  1. E-Tech Motor: The heart of the system, engineered for unmatched performance and efficiency.
  2. Motor Controller: A dedicated device ensuring optimal motor control, responsiveness, and safety.
  3. Throttle Options: Choose from top or side-mounted single throttles. For dual-engine setups, a double throttle is available, ensuring synchronized power delivery.
  4. Digital Display: Real-time feedback at your fingertips, from battery levels to motor metrics.
  5. Ignition System: Equipped with a secure key mechanism, ensuring both safety and ease of use.
  6. Connectivity Cables: Two data cables provided for effortless connection between the throttle, display, and controller.
  7. Display Power Cable: Connecting the controller and display, this cable ensures the screen stays powered and ready in standby mode.
  8. External Battery Fuse: Enhancing the safety profile of the system.
  9. Main Switch: Centralized control for the entire propulsion system.
  10. Shaft Fixed Coupling: Tailored specifically for your vessel, this black steel coupling ensures a firm and efficient connection between the engine and the propeller shaft, optimizing power transfer.
  11. *Charging Function Switch: An optional component, this switch is included when the controller is equipped with a charging function. It allows users to harness the engine’s energy for charging onboard batteries.

Inboard Mount Set:

  • Adjustable Motor Mounts: The set comes with four (4) adjustable, flexible motor mounts, ensuring stability and customization based on your vessel’s needs.

  • Steel Suspension Brackets: Depending on your boat’s specifications, the set includes either two or four steel suspension brackets tailored for a precise fit. These brackets can be fabricated at different heights for the front compared to the back, allowing us to adjust the motor’s angle for optimal alignment and performance.

  • Propeller Shaft Coupling: A fixed black steel propeller shaft coupling ensures reliable power transmission and integration with your vessel’s drivetrain.

  • *Additional Hybrid Motor Flange: For those using the motor in hybrid mode, we can additionally custom-make a specialized flange for the opposite side, ensuring perfect compatibility and integration with your existing inboard motor.

Inboard Motor Cooling System:

  • Pumps (2): These pumps, working in tandem, ensure a continuous and efficient circulation of the coolant within the closed circuit, optimizing engine temperature regulation.
  • Fluid Tank (1): Designed to store and supply the coolant, this tank is crafted for optimal fluid dynamics, ensuring a steady flow to the system.
  • Coolant Tubes (2): These tubes are vital conduits that transport the coolant between various components, maintaining the desired temperature levels throughout the system.
  • Coolant Outlets (2): These outlets facilitate the leak-free connection of the coolant tubes, ensuring a sealed and efficient flow, and preventing any unwanted coolant discharge.
  • *Additional 90° Adapters: Catering to specific installation requirements, these adapters are available for free upon request, offering enhanced flexibility in system setup.
  • Cooler with Fans (Inboard) or Stainless Steel Heat Exchanger (Outboard):
      • Inboard: Equipped with fans, this cooler efficiently dissipates heat from the circulating coolant, ensuring a consistent temperature balance within the motor.
      • Outboard: The stainless steel heat exchanger, resilient against corrosion, plays a pivotal role in temperature regulation, transferring heat from the engine coolant to the surrounding water effectively.

Customization At Its Best


Each E-Tech order is tailored to fit the unique specifications of your vessel. To provide a seamless fit and exceptional performance, we offer a variety of customization options:

  • Motor Mount Customization: Get the perfect fit for your boat’s structure.

  • Custom Coupling & Flange: We provide a custom-made coupling and flange, ensuring seamless integration with your existing setup.

  • Cable Lengths: Adapted to ensure tidy and efficient installations.

  • Battery Compatibility: Adaptable to various sizes.

  • More Custom Options: Our versatility doesn’t end here. If you have other specific needs or unique configurations in mind, please contact us directly. We pride ourselves in turning your specific requirements into reality.

Every order is intricately tailored to a specific vessel, ensuring an impeccable match. As such, production times may vary based on individual customization requests. Yet, this is just a glimpse of the possibilities. If you have unique requirements or ideas, or simply wish to explore more customization options, please discuss with us. We’re more than happy to explore further possibilities and bring your vision to life!

Advanced Motor Customization and Diagnostics via Bluetooth


Our E-Tech electric drives are not just about raw power — they’re also about giving boat owners unparalleled control and insight into their propulsion system. With our dedicated Android app connected via Bluetooth, users get the following capabilities:

  • Motor Direction Control: Easily switch the motor’s direction of rotation based on your requirements.

  • Adjustable Recharging: By modifying the drag settings, users can adjust the recharging function. Increasing the drag leads to enhanced recharging capabilities.

  • In-depth Diagnostics: Dive deeper than the standard display data. Check for any potential issues, interpret error messages, and even rectify them with the guidance of a specialist.

  • RPM Limiting: Perfect for those who charter their boats or just want more consistent performance from dual motor setups.

    • Protection from Overuse: Ensure renters or users don’t push the motor to its extremes, preserving its lifespan.
    • Extend Range: By reducing the maximum RPM, you inherently consume less power, which can lead to longer journeys on a single charge.
    • Precise Dual Motor Synchronization: In a two-motor setup, equalize the RPM of both units for a smoother, more efficient ride.

Standard Shaft & Counter-Rotating Propellers: The Perfect Pairing


Universal Shaft:

Say goodbye to compatibility issues. Our motors are meticulously designed for adaptability and ease of installation. They feature a universally compatible shaft, complemented by our custom-made fixed propeller shaft coupling, to fit seamlessly with your existing propeller shaft. Motors from 4kW to 7kW are equipped with a 25mm shaft, while those ranging from 10kW to 20kW utilize a 30mm shaft. This thoughtful design ensures a streamlined and hassle-free setup for boat owners and enthusiasts.

Counter Rotating Propellers:

When two of our E-Tech drives grace a boat, they don’t just work in isolation. They harmonize. Our standard installation ensures they’re set for counter-rotation, bestowing your boat with a slew of benefits:

  • Balanced Steering: Navigate waters with precision. The counter-rotating propellers effectively neutralize torque steer, a common challenge with twin-engine setups having propellers spinning identically.
  • Enhanced Maneuverability: Whether you’re cruising at leisurely speeds or testing the limits, this setup ensures top-tier boat handling. The responsive nature of counter-rotation translates to a ride that’s not just fast, but also smooth and controlled.
  • Efficiency Reimagined: Experience the thrill of boating with an efficiency boost. Counter-rotating propellers optimize water flow dynamics, potentially amplifying propulsion efficiency and overall performance.

E-Tech Electric Drives: Navigating Towards a Greener Future


Switching to E-Tech electric drives offers not just a silent and smoother operation but also contributes significantly to protecting our environment. Here are some of the environmental benefits you enjoy when you choose our electric drives:

  • Zero Emissions: Our electric drives are zero-emission, helping to reduce air and water pollution. Unlike gasoline and diesel engines, there’s no risk of oil leaks that can contaminate water sources, ensuring a clean and environmentally-friendly boating experience
  • Noise Reduction: Enjoy a quieter boating experience, reducing noise pollution in our waterways and allowing for a more peaceful interaction with nature.
  • Energy Efficiency: E-Tech drives are designed to be highly energy-efficient, ensuring a sustainable and eco-friendly boating experience.
  • Renewable Energy Integration: Our systems are compatible with renewable energy sources, allowing for the potential integration of solar panels or wind turbines to charge your batteries. Additionally, our recharging function enables batteries to be replenished while sailing, providing an extra layer of sustainability to your boating experience. Together, these features not only promote a sustainable boating journey but also contribute significantly in reducing your carbon footprint.
  • Closed-Circuit Cooling System: Our cooling system operates in a closed circuit, reducing the risk of environmental contamination. While our cooling system is compatible with regular car coolant suitable for aluminium, we strongly recommend using a widely available eco-friendly alternative suitable for aluminium. This choice not only ensures optimal performance but also aligns with our commitment to environmental responsibility.

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