ADO Lab Innovation: Automatic 3-Speed for E-Bikes

Introduction: Innovation at the Heart of E-Bikes

Every great e-bike is powered not only by design but also by relentless innovation. At ADO Laboratory, engineers push the limits of what an electric bicycle can be. The latest result of this work is the ADOSense automatic 3-speed hub motor system, co-developed with BAFANG, which blends mechanical precision with intelligent control for a smoother, safer, and more natural ride.

What Is the ADOSense Automatic 3-Speed Hub Motor?

The ADOSense system integrates:

• Automatic internal 3-speed gearing using a planetary gear set with centrifugal clutch.

• Torque sensors that measure real pedaling force for natural assistance.

• Belt drive transmission for quiet, clean, and low-maintenance performance.

• Adaptive control algorithms that adjust assist curves and maintain comfort at 40–60 Hz pedaling cadence.

This makes every ADO e-bike equipped with ADOSense a seamless fusion of human effort and machine intelligence.

How the Technology Works

• Automatic Shifting:

  • 1st gear (0.76 ratio) engages below ~13 km/h for high torque and climbing.

  • 2nd gear (1.0 ratio) activates for balanced cruising.

  • 3rd gear (1.31 ratio) shifts in at ~19 km/h for efficient high-speed riding.

  • Shifts are triggered by wheel RPM and use overrun clutches for smooth transitions.

• Self-Adapting Assist Algorithm:

  • Real-time sensing of cadence, torque, and motor power.

  • Dynamic assist curve ensures the right boost at the right time.

• Dynamic Speed Management:

  • Complies with EU EN15194 standards, auto-limiting to 25 km/h.

  • Smart distribution of motor output across gears.

• Belt Drive Benefits:

  • Noise as low as 20 dB.

  • Maintenance-free up to 10,000 km.

  • Clean and weather-resistant, ideal for urban commuters.

Why This Matters for Riders

• Effortless Comfort – No need to think about gear shifting, just ride.

• Natural Pedaling Feel – Torque sensors sync motor power with rider input.

• Durability & Low Maintenance – Belt drive keeps it clean and long-lasting.

• Safety & Compliance – Meets EU standards, ensuring global road legality.

• Innovation in Everyday Use – Smooth transitions between start, cruise, and speed, reducing fatigue.

ADO E-Bikes Featuring ADOSense

• ADO Air 30 Ultra – The first ADO e-bike with fully integrated ADOSense 3-speed motor, offering unmatched smoothness in city commuting.

• ADO Air 20 – Lightweight folding e-bike with torque sensing and belt drive, tested under the same lab standards.
• ADO Air Carbon – Carbon fiber frame, GPS anti-theft, and future-ready integration with ADOSense technology.

  👉 Discover more in the full ADO e-bike collection.