Ego Kit Details
Ego Kits, not to be confused with eGO Vehicles, introduces a mid drive kit. The 1200W motor can peak out at 2400W while only weighing 3.1kg. The Ego claims to be compatible with 70% of the bikes on the marketplace. The kit includes a 48V 12Ah LiFePO4 backpack battery. No word on pricing or availability. Other similar Mid-drive kits include Cyclone and Eco-speed.
Hub Motor vs. Mid drive Motor
The ongoing debate over Mid-drive Motor vs. Hub motors continue with no clear winner as they both have distinct performance tradeoffs.
Hub motors are easy to manufacture, install and maintain, but are usually stuck with one motor gear and makes for a heavy hub. Additionally, if the hub motor is used on the rear wheel, it can limit the transmission to single speed or Derailleur shifter.
The exposed Derailleur is vulnerable to impact and weather damage. Derailleur systems also need periodic adjustments for the shifting mechanism to function correctly.
Mid-drive motor systems power the drive chain which provide the option of using either internal hub transmissions or Derailleur systems. The actual motors are generally lighter, but introduce the added complexity of a gear reduction sub-system or second chain. The critical advantage is that the efficiency is greater as the optimal gear ratio can be selected for the motor and the rider to use.
The additional hardware needed for the Mid-drive to operate can make for a louder (nosier) e-bike when compared to the nearly silent Hub motor. OEM mid-drive systems are popular in locations where local regulations limit the motor’s power output. Manufactures are forced to squeeze every Watt from the under-powered motors.