
What is PAS system?
At the same time,an electric bicycle can also have an PAS(Pedal Asistant System),usually it
can offer 1:1 electric power equivalent to human power. An electric bicycle which has a PAS is
also called Pedlec. The motor can only be activated as you pedal by means of a motion or
torque sensor.it offen works through a torque sensor and VPAC(Variable pedal assist control)
intelligent Torque Sensor controller, and then battery offer electric power accordingly,this kind
of electric bike can also be called electric assist bike or power assisted bike.
Electric bikes usually be classified by use,suitable crowds,wheel size etc.So according to use and model,we can find out electric mountain bike,electric road
bikes,electric city bike,electric folding bike etc.
According to suitable crowds,we can find men's electric bicycle,ladies' electric bicycle,kids
electric bicycle, Disabilities electric bicycle and so on.
According to the regulations in different countries allow, there must be some controls and
motor specifications to meet such requirements. The following regulations for the USA and
Europe respectively.
US standard
an electric motor of no more than 750 watts, a top speed (on motor only) of 20 mph as a
"bicycle"
EU standard
Pedelecs up to 25km/h (16 mph) and a motor no more than 250 watts rated output are considered bicycles.
According to wheel size, you can find wheel diameter of 16",18",20",22",24",26",
e-bike conversion kit