How do the electric-bikes work

What is an E-BIKE ?

The E-Bike we usually refer to in China refers to electric-assisted bicycles, which originated in Japan and then developed in Europe. According to EU regulations, the relevant products are generally divided into three categories: electric assist bicycles (Pedelec), high-speed electric assist bicycles (S-Pedelec) and electric bicycles (E-Bike).

Electric bikes are becoming more and more common on roads and cycle paths principally because they’re the perfect option if you’re looking for some extra help to enjoy cycling.

But what are the rules about what constitutes an e-bike? And do you have to pedal an electric bike?

Let's start to talk about the rules in the different aera,UK, EU, Australia and most of the rest of the world. The law is a little different in the United States.

Legally, to classify as an electric bike, the motor has to assist your pedalling. So it can’t provide power if you’re not putting in at least some of your own effort. There will be a torque sensor built into the system that senses your output and controls the motor’s power to match.

Electric bike systems on the best electric bikes will typically have a number of different assistance levels that you can select via a button, usually on your handlebar or the top tube. That lets you choose how much of a push you want the motor to give. More assistance means less range, so it’s a good idea to save maximum assistance for uphills and dial it down when you don’t need it.

Bosch’s range of motors provides four different levels of assistance.Depending on the motor fitted to your e-bike, the maximum can be from 250% up to 400% of your input, while the lowest Eco mode adds between 40% and 60% extra push.You can also turn the motor off completely and ride unassisted. The weight of the motor and battery can make this a bit of an effort, despite most systems providing no resistance when turned off.

UK and EU law, along with regulations in Australia, limit the top speed for a motor on an electric bike to provide assistance to 25kph/15.5mph. In most states in the USA, there are three e-bike classes. Class 1 e-bikes can provide input up to 20mph, while Class 3 e-bike motors can keep going up to 28mph. Above that, the motor has to cut out. You can ride above that speed, but under your own power or downhill.

On the latest crop of lightweight road e-bikes frames, riding at over 25kph is perfectly possible for a reasonably fit cyclist on flat roads or going downhill, although on heavier flat bar e-bikes with wide tyres it is a bit more difficult. Hit a hill or a gradually ascending road and your speed is likely to drop below this, with the motor chipping in to help you once again.

Xiamen Tour de Cycling has been specialized in carbon E-bike frames developing, producing,and manufacturing almost 20 years. Our best products are carbon bike frameset, including but not only on E-Road frames,E-Gravel frames,E-MTB bike frames, as well as carbon E-Bike suspension or endurance frames in China.We built a separate plant in Sichuan for e bike production factory with about 30000 kilometers. welcome to send your quotation to Start your OEM design.