How Bicycles and Electric Bikes Work

A Complete Beginner Guide to Motors, Batteries, and Bike Types

Cycling is one of the most efficient and sustainable ways to move through a city. Whether you ride a classic bicycle or an electric bike (e-bike), the basic principles remain simple, but modern e-bikes add powerful technology that makes riding easier, faster, and more accessible.

In this guide we explain how bicycles work, how electric bikes function, the different motor systems, and the difference between medium and premium quality bikes. If you want to see a real example of how an electric city bike works, you can watch the short video below.

👉 See how an electric city bike works in practice:
https://www.instagram.com/reel/DU0z25RjW1O/

How a Bicycle Works

A traditional bicycle works through a simple mechanical system that converts your pedaling power into motion.

The main components include:

1. Pedals and Crankset
When you push the pedals, the crankset rotates and transfers energy to the chain.

2. Chain and Drivetrain
The chain moves the rear wheel through the cassette or gear system, allowing you to adjust speed and resistance.

3. Gears
Gears help riders adapt to different terrain. Lower gears make climbing hills easier, while higher gears allow faster speeds on flat roads.

4. Wheels and Tires
The rotation of the rear wheel moves the bike forward, while the front wheel provides steering and balance.

This simple but efficient system has made bicycles one of the most energy-efficient transport methods ever created.

How an Electric Bike Works

An electric bicycle (e-bike) works similarly to a traditional bike but includes an electric motor and battery that assist your pedaling.

Instead of doing all the work yourself, the motor provides pedal assistance, making it easier to ride longer distances or climb hills.

An e-bike typically includes:

• Electric motor
• Removable battery
• Controller and sensors
• Pedal assist system
• Display showing speed and battery level

When you pedal, sensors detect your effort and activate the motor, adding extra power.

Removable Batteries Explained

Most modern electric bikes come with a removable lithium-ion battery.

This allows riders to:

• Charge the battery indoors
• Replace it easily if needed
• Extend the lifespan of the bike
• Prevent theft by removing the battery when parking

Typical battery ranges vary between 40 km and 120 km per charge, depending on motor power, terrain, and riding mode.

Mid-Drive Motor vs Rear Hub Motor

Electric bikes generally use two types of motors.

Mid-Drive Motor

A mid-drive motor sits in the center of the bike near the pedals.

Advantages:

• Better weight distribution
• More efficient on hills
• Higher performance
• Used on premium e-bikes

This system uses the bike’s gears to optimize power delivery.

Rear Hub Motor

A rear hub motor is located inside the rear wheel hub.

Advantages:

• Simpler and cheaper design
• Lower maintenance
• Smooth acceleration
• Common in medium-range e-bikes

This is the most popular motor type for city commuting e-bikes.

Medium vs Premium Quality E-Bikes

Not all electric bikes are built the same. The difference between medium quality and premium bikes usually comes down to components and technology.

Medium Quality E-Bikes

Typically include:

• Rear hub motor
• Basic lithium battery
• Mechanical disc brakes
• Entry-level drivetrain
• Affordable price

These bikes are ideal for daily commuting and casual riders.

Premium E-Bikes

High-end electric bikes usually offer:

• Mid-drive motors (Bosch, Shimano, Brose)
• Larger batteries with longer range
• Hydraulic disc brakes
• Advanced suspension
• Higher-quality frames and components

These bikes are designed for longer rides, performance, and durability.

Popular Types of Electric Bikes

City Bikes

City bikes are designed for urban commuting. They offer comfortable riding positions, racks for carrying bags, and efficient motors for daily travel.

They are perfect for replacing car trips inside cities.

Fat Bikes

Fat bikes feature extra-wide tires, providing better grip on sand, snow, or rough terrain.

Electric fat bikes combine powerful motors with large tires, making them great for adventure riding and off-road exploration.

Why Electric Bikes Are Transforming Urban Mobility

Electric bikes are rapidly becoming a major part of modern transportation because they:

• Reduce traffic congestion
• Produce zero emissions
• Lower transportation costs
• Make cycling accessible to more people

For many riders, e-bikes make it possible to replace car trips entirely, especially in cities.

Find Your Next Bike

Whether you're looking for a city e-bike for commuting, a fat bike for adventure, or a high-performance electric bicycle, you can explore available models on the bFlex marketplace.

👉 Browse bikes available for purchase:
https://bflex.io/services/buy/bikes?c-ids=4&sort=price