Electric bicycle for the city: the pros, cons, the device

In recent years, very popular different types of bicycles. This type of transport is very well suited for family walks and as a means of transportation around the city. And, of course, in this vehicle as complete without the know-how, or rather the electric as the next generation of new bikes.

How does the electric bicycle

According to its components, this type of transport is not very different from the simple bicycle, that is, if you're tired to exert physical force and pedal, the electric motor is turned on and carries the entire load electric wheel. In fact, after the launch of the electric mechanism, it becomes like a scooter and move without effort.

Operation is based on the use as a battery power source, which drives the mechanism, battery charging occurs from the mains.

Attaching the battery is so easy that allows you to easily remove the discharge and to set a new elektrobatareyu. Application of such admission not cunning travel distance increases twice.

The principle of operation is as follows, next to the main axis of the engine and gearbox are arranged which rotate the wheel. Sami device located in a sealed housing. A motor driven by special wires, in general, and this design is an electro-wheel. The only drawback of such a device - a large mass, because bicycle forks further strengthened.

In addition to said electric as installed on a conventional bicycle pedal and disc brakesThat allows you to easily get to your destination when discharged.

Apparatus electric bicycle

Hybrids of the same type of systems, their average weight is 42 kilograms. Maximum transported weight transport is 120 kilograms. The material of the frame and the rim consists of aluminum alloy, which greatly simplifies construction.

Front brake type rim, the back is usually a roller. Exists budget tricycles - tricycles. Number of speeds alone, but some manufacturers install two three-speed transmission. Pedal design classic. Wheel bent, but it is possible to install any convenient form.

Driven by the force or still called electric drive is a motor-wheel, is the most common type of engine, found in everyday life, as the most reliable. Also apply to other systems, chain drive and a friction electric, about their advantages and disadvantages are listed below.

According to their design features, different and even on battery power. No matter what the manufacturer or the type of bike you choose, the developers set them different types of rechargeable batteries, ranging from 200 to 1000 watts.

Charging is carried out from the ordinary mains voltage of 220 volts, the charge time is three to four hours.

The design includes a controller, whose duty control power supplied from electric batteries.

functions

For the convenience of driving, some manufacturers install accessories brand, providing comfort when riding.

One of them is the control unit - the cruise control when driving at a certain speed of 12-20 seconds, it is activated automatically and requires no extra effort.

Some hybrid bicycle manufacturers also set the block E-ABS, in essence meaning of this unit is to recover, or otherwise the engine brake. The advantage of this system is that battery charging occurs during braking. Runs the system by pressing the brake lever.

Function to which you should pay attention when choosing a bicycle - a system of assisting the pedals. The meaning of the device is that it allows you to move without constantly holding the throttle. Launch system produced when pedaling in a monotone mode thus selected desired engine speed for the economic driving.

Pros and cons of electric bicycle for the city

When choosing a future of transport should pay attention to all the details, studying which you will be able to opt for one or another brand.

Electric bicycles, whose principle of operation is based on the motor-wheel, have advantages:

1. Motor the factory installed as the front and the rear wheel, without loss of power.
2. With the increased power of the battery to 72 volts attained a great speed.
3. Such a bicycle can be easily repaired, due to simplicity of construction, are not required to have special knowledge and to use the services of a specialist service. Parts are easily interchangeable.
4. Running the engine is silent.

Of the minuses can be noted:

• Overweight wheel set more durable material rim, respectively the mass of the bicycle is higher than the rest;
• At high engine speeds, the wheel begins to operate in generator mode, then there is the bicycle braking.

Vehicles whose principle is based on the chain drivesIt has advantages over motor-wheel system, for the following reasons:

• This type of engine is easy to use. When the engine failure, you can use the electric motors of various household appliances, even cars.

• The simple design of the system has led to the fact that producers set gearbox that undoubtedly improves the efficiency of using the system, on a level with the others.

Significant drawbacks:

• Side noise caused by operation of the electric motor and chain.
• Difficulty in the repair of the engine and other systems that require special knowledge in mechanics and the presence of special tools.

Electric hybrids, in the heart of the action, which is a friction drive is have a number of drawbacks:

• Because primitive design mechanism very low efficiency.
• For large loads quickly discharged battery.
• Due to small friction force of the engine shaft and the wheels, a bicycle bike used only on flat surface riding on the undulating unevenness leads to a halt, due to inability to climb a hill.
• Due to constant friction wheel and the motor shaft, the tire wear occurs.
• It requires constant maintenance of the pressure level in the chamber, in order to avoid slipping roller.

The main advantage of this design - simplicity and consequently lower cost.

In addition to these advantages and disadvantages when choosing a need to also pay attention to the following: a small-size mode of transport and it can be easily stored in the apartment. Low costs for refueling, the electric motor is more reliable as compared with other types, such as an internal combustion engine.

How to use

Before driving always check the pressure in the wheels, the density of the nuts and bolts, the elasticity of the spokes tension.

The distance that you will pass depends on the battery charge level, weather conditions and your weight, because before the trip charge the battery.

When long-distance journeys should take a break for five or ten minutes, this technique avoids the controller to provide operational and avoid unnecessary congestion.

Particular attention is drawn to the status of the battery. Before the trip, you should check the charge level, it should be 100%.

Storing the battery in a dry place to avoid falling to moisture. charge level in this case must be at least 70%. When charging should carefully monitor the level of the supply voltage and the charger, they must be identical.

Observe the temperature of the battery mode, if it rises above 55 degrees, the sign of the first battery malfunctions, or the battery charger. The battery recharge is required every 25 days, even if you do not operate it.

When cleaning is not to apply high pressure apparatus with a strong pressure of the water, it will damage the electronic components.

Security measures

The user must take precautions.

In any case, do not disassemble the electrical components that are included with the bike. The electrical components are able to withstand rain, but can not be immersed in water, it will lead to the closure.

When driving, both hands holding the steering wheel, when you travel and obey traffic rules.

Beginners when traveling on bicycle hybrids is recommended to use a bicycle helmet and gloves and knee pads.

Problems

During operation faults occur, which may detect and correct yourself. For example: if you have problems in the motor-wheel act better way described below.

Take a camera and record every action. Such a method will assist you in the assembly, as will be fixed all the location and how to connect the wires.

presumably to be replaced one by one item on a non-working properly. If nothing happens when you replace these parts, then failure lies elsewhere.

Similarly, check availability and other bicycle components. Finding out the cause of failure, replace it. If you suspect damage to the system controller, then sniff.

There are cases where problems arise in the electric circuit. The reason for this failure is the wrong connection of the electric motor, the controller unit or the lack of contact at the joints.

In such a situation it is desirable to have a wiring diagram nodes. Without it, the fault is not eliminated, and the method of "trial and error" is not suitable. However, if you do not understand the wiring diagrams, it is best to contact a specialized service.

And problems occur due to the oxidation of the contacts, it happens under the influence of moisture, temperature shock, and improper storage. In order to avoid such problems should be timely cleaned contacts.

Another reason for breakdowns - the battery problem. It occurs when improper operation of the battery, or long-term storage in a discharged state. Then the only solution to buy a new battery, since they are not subject to repair.