![]() ![]() Alas, under pressure from the oil companies, the California Air Resources Board backpedaled on their tough electric vehicle legislation and the rest is history. ![]() The EV Warrior had two opposing motors powering a friction drive roller over the rear wheel, a long frame designed for cruising at high speed and an all around reliable setup. A great example is the EV Warrior ebike, which was a California designed, Mexican produced dual motor friction drive ebike designed to help automakers in California adhere to a law requiring a certain number of sales of electric vehicles in all car dealerships in the state. When the throttle is engaged, the roller spins the tire which in turn powers the ebike.įriction drives were popular in the early days of the modern electric bicycle. Some type of abrasive coating is applied to the roller to help it grip the tire, and some method of tensioning is applied to help the roller stay connected to the tire. The roller is connected to the output shaft of the motor, or even occasionally is the motor shell itself. This usually manifests itself in a roller on the rear wheel of the bike. First, some mechanics.įriction drives, like their name would imply, work by powering the bike through a friction connection. Let’s take a step back and look at the evolution of the friction drive to get a more fair assessment. Perhaps I’m being hard on friction drive electric bicycles. And if hubmotors are king, then that makes friction drive electric bicycles the lowly cousin, still part of the royal family but never destined for the thrown. Sure, mid-drive ebikes are slowly gaining momentum, but hubmotors are king right now. In the world of electric bicycles, one type of motor drive reigns supreme: the hubmotor. ![]()
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