Electric bicycles are bicycles that has incorporated a battery and an electric motor that helps advance. From a legal point of view there are two types of electric bicycles: that lack of throttle, maximum power is 250W and only provide assistance while pedalling is below 25 km/h are considered bicycles for the purpose of circulation, while the rest are considered electric mopeds, so required license and insurance. Legality basically, electric bicycles are nothing more than bikes equipped with electric motor. To be legally considered bicycles and be able to roll on the public roads without insurance, passport or documentation, electric bicycles must verify some requirements, which may vary from one country to another: may not have accelerator. The engine is only active when it is pedalling, with attendance below 25 km/h.

maximum 250 W motor nominal power. Weight maximum 40 kg. How electric bikes without accelerator pedal-assist, provide exist two systems: motion Sensor with regulator: the more usual in electric bicycles, detects that the user pedals and activates the motor. The level of assistance you can select by the regulator, on occasions account with a LCD display. Torque sensor: not only detects that the user is pedaling, but also the intensity with which makes it, helping the pedaling proportionally. Electric bicycles with Accelerator enable engine regardless of pedaling, as if it were a motorcycle, which facilitates manoeuvres as starting at traffic lights. Electric bicycles components consist of various components: bicycle: is the part cycle of electric bicycles.

Battery: it supplies power to the motor, typically lithium, they are usually installed in the rear grille and they have charge indicator. They provide a range of 30 to 60 km, depending on the type of wheels, ground or the rider’s weight to electric bicycles. Engine: Converts the battery power in movement and its rated power usually between 180 and 240 W can be installed in the hub of the wheel (front or rear) or the bottom bracket. Controller: manages system, captures the Cadence sensor signal and sends more or less power to the motor. There are models advanced progressive power, anti-skidding system delivery or regenerative, braking that leverages the inertia from braking and descents to recharge the battery. Sensors: detect if the user is pedaling (motion sensor) and with what intensity makes it (torque sensor). Conversion kits electric bicycles can be purchased complete or you can convert a normal bicycle to electric using a conversion kit, generally easy and quick to install. Motorization is economic, allows us to choose our taste part cycle, and if in the future we change the bicycle can migrate the motor system to the new. Source: Electric bikes original author and source of the article