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Eco mode saves battery for city commuting, and Turbo is right there when you need a burst of power
Although electricity seemingly functions as an independent extraction of energy, it realistically requires a large use of fossil fuels, such as coal, to generate the proper amount of kinetic energy to manifest it (Woodford)
Its also possible to add torque sensors or pedal sensors to the bike frame so that the motor engages automatically when you turn the cranks, but those usually require more specialized bike tools to install
This removes grit and algae that can cause friction in the rod guides
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