Derestricting an electric bike refers to removing the pedal assistance limit that restricts your bike from exceeding a speed of 20 mph. The limit is put in place to prevent your bike’s motor from releasing all of its energy, which would allow you to exceed this set speed. Derestricting, also known as tuning, is possible because the electric bike only has the limit because of the manufacturer — meaning that removing the manufacturer’s settings will enable the cycle to use its motor’s full power.
When the pedal assistance system is in place, it triggers the bike to slow down as it nears the 20 mph limit. Once that limit is reached, the e-bike will continue operating, but its motor will no longer assist you in speeding up. For example, when on a downhill, you may exceed 20 mph. The bike will allow you to do so if it is happening naturally, but the electric bike will not assist you in transcending the set limit.
Since the drive uses how fast the rider is pedalling to decide how much drive is released, it can be manipulated to think otherwise. If you desire to go above the speed limit of 25 km/h, then all that has to be done is to make the electric bike system think that you are going at a slower rate even though you are going at a very high speed. This is the guide that fuels most of the de-restricting options that are available.
An electric bike is de-restricted by placing a compact electronic device between the sensor magnet of the wheel and the computer that calculates the speed at which you are moving. This device causes the computer to calculate based on falsified signals thereby leading to the slower current speed. This slower speed is what the system reads and, as such, it prevents the limit from being triggered. As a result, the drive does not get triggered to be deactivated even though you are moving at a speed higher than 25km/h. This is the principle guiding the tuning of e-bikes.
Often, many e-bikers believe that derestriction causes their motor to suddenly be more powerful. This is a misguided and incorrect notion. Derestriction of an electric bike does not make your motor more powerful than it already is. It only makes your bike go faster. It does this by preventing the system of your bike from detecting that your bike is going at high speed. So, no, it does not change the capacity of your motor; it only circumvents the prescribed 25 km/h limit.