Fat-Tire E-Bike Motor

Qianjiang Motor is a manufacturer and supplier of fat-tire e-bike motors. Our products feature high torque output, stable performance under heavy loads, and excellent all-terrain capability; they are suitable for challenging conditions, such as snow, sand, mud, mountains, and gravel, and cater to diverse needs ranging from urban commuting and off-road riding to carrying heavy loads or two riders.

Wide-Tire-Specific Tuning

Wide-tire vehicles have wider tire treads, larger contact areas, and much greater driving resistance than ordinary electric vehicles. Ordinary motors lack sufficient power, resulting in sluggish operation and weak escape capability.

This motor is specially optimized for the high-resistance operating conditions of wide tires, with upgraded magnet and winding ratios and peak high-torque output, perfectly matching the off-road characteristics of wide tires and completely solving common problems of weak power, slipping, and poor climbing ability on fat-tire vehicles.

● Strong All-Terrain Escape Capability: Supported by high torque at low speeds, it provides stable travel without slipping or wheel sinking on sand, soft snow, muddy dirt roads, soft grass, uneven gravel roads, and other surfaces. Continuous power output makes it easy to overcome light off-road obstacles and is suitable for all outdoor adventure scenarios.

● Heavy-Load Hill Climbing Without Fear of Steep Slopes: Compared with ordinary motors of the same power, torque is increased by more than 45%, easily handling steep mountain slopes, long underground parking garage ramps, and rural slopes. Even with two people or heavy loads, it does not become weak, roll backward, or suffer power loss.

● Stable Wide-Tire Operation Without Floating: Linear and balanced power output matches the large ground-contact damping of wide tires. It provides stable high-speed riding and smooth low-speed climbing, eliminating common problems such as sluggish starts, floating at high speeds, and power interruptions.

Brushless Pure Copper Core

Using a brushless structure with thickened all-pure-copper winding coils + high-flux permanent magnets, it eliminates the low-efficiency shortcomings of traditional aluminum-wire motors and brushed motors.

It provides high electrical conductivity, low heat generation, and maximum power conversion efficiency, making it suitable for high-frequency off-road riding, long-distance riding, and heavy-load commuting with wide-tire vehicles.

● High Energy Efficiency and Long Range: Power loss is extremely low, intelligently adapting to the driving resistance of wide tires. It saves energy under light loads and maintains power under heavy loads. With the same battery capacity, the range is increased by more than 25% compared with ordinary compatible motors, reducing the need for frequent charging during long-distance off-road riding and daily commuting.

● Continuous Operation Without Thermal Power Loss: With no carbon-brush friction loss and a large-area heat dissipation structure, it is less likely to accumulate heat during long climbs, off-road riding, and heavy-load riding, preventing high-temperature thermal power loss and motor overheating under high-intensity riding.

● Maintenance-Free and Highly Durable: No carbon brushes or easily worn friction components, providing zero-wear operation without regular maintenance or replacement of parts. Even under frequent year-round off-road and commuting use, the failure rate is extremely low, providing worry-free durability.

Reinforced Off-Road Structure

Designed for the frequent bumps, off-road impacts, and strong road vibrations experienced by wide-tire vehicles, the entire motor structure is reinforced, and the load-bearing capacity of the hub is upgraded.

It withstands impacts and bumps without deformation, far exceeding ordinary transportation motors and specifically designed for outdoor off-road and heavy-load applications.

● Thickened Hub with Strong Load-Bearing Capacity: The dedicated wide-tire hub cavity design provides a higher load-bearing limit, supporting two-person heavy loads and cargo transportation. The hub is less likely to deform or crack, maintaining stable and safe long-term heavy-load riding.

● Shock and Bump Resistance: Internal coils, magnets, and sealing structures are fully reinforced to handle mountain bumps, gravel road vibrations, and off-road impacts without easily becoming unsoldered, malfunctioning, or producing abnormal noises.

● Stable Power Transmission: Precision magnetic-gap tuning prevents power loss and stalling on bumpy roads, providing smooth power output throughout the ride and significantly improving the off-road riding experience.

Outdoor-Grade Three-Proof Protection

Off-road riding often involves mud, water, rain, snow, sand, dust, and muddy roads. Ordinary motors can easily suffer from water or dust intrusion, short circuits, and damage.

This motor uses multi-layer sealing and full potting waterproof technology, achieving IP54 high-level protection and providing comprehensive protection in harsh outdoor environments.

● Waterproof and Resistant to Rain and Snow: The sealed motor body prevents rainwater, snow water, and road splashes from entering the motor core. It can be used normally in rainy and snowy weather, snow riding, and muddy roads after rain without short circuits or malfunctions.

● Dustproof and Mud/Sand Resistant: Effectively prevents outdoor dust, mud, debris, and gravel particles from entering the motor, avoiding dust accumulation, stalling, and power reduction while maintaining long-term off-road performance.

● Moisture and Corrosion Resistant: Suitable for humid and sandy outdoor environments. The motor body receives anti-corrosion and rust-resistant treatment, making it less prone to aging and rusting during long-term use near the seaside or in humid mountainous areas.

Quiet and Smooth Tuning

With a sine-wave power tuning logic, power output is smooth and linear, with gentle starts, progressive acceleration, and stable deceleration. It completely solves common problems of wide-tire motors such as abrupt starts, low-speed vibration, and high-speed whistling, balancing off-road performance with riding comfort.

● Gentle Start Without Sudden Acceleration: Soft-start design prevents sudden bursts of power. During heavy-load and off-road starts, it prevents the front from lifting and reduces slipping, making riding safer for beginners.

● Quiet Operation Without Whistling: Brushless smooth drive eliminates high-frequency motor noise, providing quiet operation during urban commuting and noise-free riding outdoors.

● Precise and Controllable Speed Adjustment: Switch between fast and slow speeds as desired. It provides smooth and energy-saving transportation on flat roads while delivering maximum power for heavy-load off-road riding, adapting to all scenarios.

Product Installation

It uses standard mounting dimensions, axle specifications, and wiring interfaces commonly used on wide-tire vehicles, perfectly compatible with 10*6.00-6/10*6.00-5.5-inch wide-tire and fat-tire electric bicycles on the market.

The original motor on an old vehicle can be replaced in its original position without modifying the frame or wiring. It supports automatic adaptation to Hall/no-Hall controllers, making it compatible with both new and existing electronic control systems and allowing beginners to install and modify it themselves.

Core Product Parameters

Full-Scenario Compatibility

Urban Commuting: Smooth and quiet, energy-efficient with long range, making daily transportation and short-distance travel worry-free and effortless;

Outdoor Off-Roading: Easily travels through mountains, gravel roads, dirt roads, and grass with extremely strong escape capability;

Snow and Sand Riding: Wide tires + high-torque traction prevent wheel sinking and slipping, making it suitable for winter outdoor riding and sand adventures;

Heavy-Load Transportation: Two-person riding and cargo transportation with no power reduction and a stable vehicle body without floating, fully meeting various needs for home use, outdoor activities, and adventure!

FAQ

Q1: What is the difference between a wide-tire motor and an ordinary electric vehicle motor? Can they be used interchangeably?

They are not interchangeable and are specially customized for wide-tire and fat-tire vehicles! Ordinary motors have low torque and low hub load-bearing capacity and are designed for narrow tires. They cannot handle the high driving resistance of wide tires and may experience sluggish power, weak climbing ability, and hub deformation.

This motor upgrades torque reinforces hub load-bearing capacity, and optimizes compatibility with wide-tire resistance. It is specifically tuned for fat-tire off-road and heavy-load applications, with off-road performance, stability, and durability far exceeding ordinary transportation motors.

Q2: How should I choose between the 1000W/2000W/3000W power options?

1000W Basic Version: Suitable for pure urban flat-road commuting, single-person transportation, and light travel. It offers energy efficiency, quiet operation, and excellent value;

2000W Universal Version: Balances urban use and light off-roading, handling small steep slopes, gravel roads, and occasional heavy loads, making it suitable for most scenarios;

3000W Off-Road Version: Designed for mountain climbing, snow and sand, heavy off-roading, and long-term two-person heavy-load riding, providing abundant power and maximum escape and climbing capability, making it the first choice for outdoor adventures.

Q3: Will it slip or sink when riding on sand, snow, or mud?

It is not prone to slipping or wheel sinking. Relying on high-torque low-speed traction and the ground-contact advantages of wide tires, power is delivered evenly during startup, avoiding the high-speed wheel spin and slipping commonly found with ordinary motors.

It can travel smoothly on soft, muddy, and snowy surfaces, with excellent light off-road escape capability.

Q4: Will riding in the rain or washing the vehicle cause water to enter and burn out the motor?

No. The entire motor uses multiple sealing layers and internal full-potting waterproof technology with IP54 protection, which can withstand daily rain splashes, riding on muddy roads after rain, and light cleaning with a high-pressure water gun.

It provides sufficient waterproof protection for normal outdoor use. Warm Reminder: This is only protection against splashing water every day. Long-term immersion in deep water and underwater driving is prohibited.

Q5: Will the power decrease or will the motor overheat and burn out during heavy-load two-person riding?

No. This motor is specially optimized for heavy-load conditions, using thickened pure-copper coils and reinforced heat dissipation structures, combined with multiple controller protections.

During two-person heavy-load riding, long climbs, and off-road riding, it may generate only slight heat, which is normal under operating conditions. It will not experience power reduction or high-temperature motor burnout, providing excellent heavy-load stability.

Q6: Can an old wide-tire electric vehicle be directly modified and replaced? Is installation complicated?

It supports non-destructive replacement in the original position and is compatible with most 20/24/26-inch wide-tire and fat-tire electric bicycles on the market. The axle position, hub, and wiring interfaces are compatible.

No frame modification, drilling, or debugging is required. Beginners can disassemble and install it themselves, with overall performance upgraded after replacement.

Q7: Is the riding noise loud? Will there be whistling or abnormal noise at high speeds?

It operates quietly and smoothly throughout. It uses brushless sinewave tuning with smooth and refined power output, eliminating the low-speed vibration and high-frequency whistling commonly found in ordinary motors.

It provides quiet and noise-free urban commuting and outdoor riding, significantly improving the overall riding quality.

Q8: Will the motor easily break when frequently used for mountain off-roading and riding on bumpy roads?

It is not prone to damage. The entire motor has undergone shock reinforcement, vibration aging, and heavy-load impact testing. Internal components are securely fixed, and the hub is reinforced for durability. It is specifically designed for off-road bumps, vibrations, and impacts.

During frequent long-term use on mountains and gravel roads, it is less likely to experience loose solder joints, abnormal noises, or deformation, providing much greater durability than ordinary transportation motors.

Q9: How is the range performance? Will strong power consume electricity quickly?

It does not waste electricity unnecessarily. It uses intelligent energy-efficiency adjustment logic, automatically reducing power consumption to save energy under light loads and flat roads, while increasing power under heavy-load off-road conditions.

It precisely adapts to the driving resistance of wide tires. Compared with ordinary wide-tire motors of the same power, the range is more reliable, balancing both power and range.

Q10: How long is the product warranty, and is the failure rate high?

All motors undergo power-on, heavy-load, hill-climbing, waterproof, and vibration aging tests before leaving the factory, ensuring stable quality and an extremely low failure rate.

Except for damage caused by human factors such as water immersion, violent impacts, unauthorized disassembly or modification, or overloaded and improper use, customers can enjoy normal after-sales warranty service, providing peace of mind and reliability for long-term commuting and off-road use.