Wheel hub motor driving technology, also known as in-wheel motor technology, is characterized by the integration of power, transmission, and braking devices into the hub, greatly simplifying the mechanical part of electric vehicles.
This is often overlooked, but Shengyi wheel hub motors have obvious robustness when completely independent of the human drive train. If you have ever encountered situations such as chain breakage, gear jamming, snow accumulation in the chain wheel, or flywheel rupture, you will greatly appreciate that the Shengyi electric bike wheel hub motor can continue to push the bicycle to take you home. With a mid-drive motor, anything that disables the drive train will completely stop the bike, as the motor and pedals become useless.
Reduce pressure and wear on the drive train
For wheel hub motor cycles, the use of motors reduces the mechanical wear and tear on chain, gear, and derailleur systems because it reduces the pedal pressure applied by the rider to the gear shift. In contrast, mid-drive motors apply more force to the chain and gear, adding to the rider's input. Ordinary bicycle chain drive systems are quite sturdy and can usually handle this extra load without any trouble, but wear rates will be faster, so it is necessary to be more vigilant about chain stretch, gear wear, and gear shift alignment.
Ability to use internally geared hubs
Except for a few exceptions, these hubs do not have extra pressure from rated motor drivers and usually have short service lives, with additional power from the motor exceeding several hundred watts. If you want to use the internally geared hub with a mid-drive, be sure to check if the hub is suitable for serial or cargo use - in other words, not.
Higher peak power capacity
The transfer of power through the bicycle drive train also limits the maximum motor power that can be coupled to the wheel. Power levels in the range of 250 to 750 watts usually only require increased wear, but when you are looking for kilowatts of power, you will start to see catastrophic failures such as chain breakage, flywheel shearing, and spoke fracture. Torque arms correctly coupled do not have such restrictions.
Regenerative braking potential
With a direct drive wheel hub motor or a gear-infused wheel hub motor with a locking clutch, the motor can act as a perfectly controllable brake, unaffected by rain, pad wear, cable adjustment, or similar situations. Like the way wheel hub motors reduce chain wear and maintenance, it can also reduce or even eliminate maintenance of brake pads. You can easily complete 90% of braking electronically, with only odd emergency stops requiring mechanical engagement.