How to Cool Down a Hub Motor: Many riders struggle with overheating issues in hot summer, and we’ve sorted out practical solutions for you today.   Optimize Riding Habits (Fundamental Heat Reduction) · Avoid long-time full throttle, steep hill climbing or heavy overloading Sustained high current generates massive heat inside the sealed hub shell. Take a 10–15 minute break after 40–60 mins of heavy riding for natural cooling. · Use gradual acceleration instead of frequent sharp bursts Frequent peak current surges rapidly heat the coils and magnets. · Make full use of regenerative braking It reduces mechanical friction and lowers ... Read More

High Torque Motor QSJ128B-70 is a high-performance 72V permanent magnet synchronous mid-drive gear motor, specially designed for high-speed electric motorcycles, off-road e-bikes and heavy-load electric vehicle conversion kits. Combining outstanding torque output, high efficiency and all-weather IP67 protection, this motor delivers stable powerful performance under steep climbing, frequent acceleration and long-time heavy-duty operation. Core Advantages Industry-Leading Peak Torque 67N·m The raw maximum torque reaches 67N·m before deceleration. Matched with a 3.462 reduction gear set, it generates explosive climbing force, easily coping with steep slopes, heavy cargo and off-road rough terrain. S9 duty cycle supports repeated acceleration and hill climbing without ... Read More

QS180 Mid Drive Motor – Core Advantages of Inner Rotor Design Structural differences between outer rotor hub motors and inner rotor PMSM motors lead to massive gaps in top speed, heat dissipation and continuous power performance, which directly impact riding experience and motor service life. How Outer Rotor Hub Motors Work For traditional outer rotor hub motors, the rotor is arranged on the outer ring while the stator sits in the center. This design delivers instant low-speed torque for easy climbing, yet it comes with obvious drawbacks: · Limited maximum no-load RPM, unable to support high-speed cruising; · Poor heat ... Read More

Air Tightness Test checks the sealing performance of motor housing, end caps and wire terminals to block water, dust and moisture inside the motor, a key measure to meet IP waterproof standards. Our Testing Process We adopt positive pressure holding test for all finished motors. Seal all openings of the motor, inject compressed air and keep constant pressure for specified time. Technicians monitor pressure drop; unqualified products will be resealed and retested. 10% of products are randomly sampled for immersion air tightness test. What’s the Benefit? · Prevent internal coil short circuit caused by water ingress. · Adapt to wading, ... Read More