An aero bike, short for aerodynamic bike, is a specially designed bike that is optimized for maximum aerodynamics. The main goal in designing aero bikes is to minimize air resistance and thus increase speed by making the shape of the...

A Bowden cable is a type of traction cable used in various mechanical applications, especially in vehicles, bicycles, and other devices with moving parts. The Bowden cable consists of a flexible metal cable surrounded by an outer protective tube. The...

The center-pull brake is a type of bicycle brake used to slow down the bicycle. It is also known as a "rim brake" or "V-brake" and is one of the most commonly used brakes on bicycles. How does a center-pull...

Chainsuck Chainsuck (also known as chain jams or chain snags) is a technical problem that can occur on bicycles. It occurs when the bicycle chain gets stuck between the chainring and the bottom bracket shell and does not release on...

What is a derailleur? A derailleur is a system that allows a cyclist to regulate the relationship between power and speed. This system consists of a chain placed between different sprockets on the crank and cassettes on the rear wheel....

Die ETRTO-Tabelle (European Tyre and Rim Technical Organisation) enthält die standardisierten Größen für Fahrradreifen und -felgen. Sie sorgt dafür, dass Reifen und Felgen verschiedener Hersteller kompatibel sind. In der Übersichtstabelle kann man die gängigen Fahrradreifen-Größen in Zoll und den entsprechenden...

An electronic shifting system refers to a type of gearshift used in bicycles that allows electronic control of gear shifting. What is an electronic gear system on a bicycle? An electronic bicycle gearshift, also known as an e-gearshift, is a...

What is Enviolo? Enviolo is a brand that specializes in the design and manufacture of continuously variable transmission systems for bicycles. These innovative transmissions allow cyclists to adjust the gear ratio smoothly and without fixed shift steps. Unlike traditional gear...

The freewheel is a mechanism on the rear hub of a bicycle that allows the cyclist to rest the pedals in certain situations without the crank and thus the rear wheel turning. The freewheel helps make cycling more efficient and...

What is a "French valve"? The "French valve", also known as "Sclaverand valve" or "Presta valve", is a type of valve commonly used in bicycle tires. It is named after its inventor, the French cyclist and valve manufacturer René Sclaverand...

Pinion MGU is a special gearbox technology developed by the German company Pinion. MGU stands for "Modular Gear Unit" and refers to a series of gearboxes especially designed for bicycles. This technology is known for its reliability, low maintenance and...

The Q-factor is a measure of the width of the pedal spacing on a bicycle. It refers to the horizontal distance between the crank arms that support the pedals. The further apart the cranks are, the higher the Q-factor. Properties...

What is suspension travel? Suspension travel refers to the depth of the suspension that absorbs bumps on the road. This is especially important for mountain bikes. Suspension travel is measured in millimeters (mm) and varies depending on the type of...

What is a trapezoidal frame? A trapezoidal frame is a type of bicycle frame that gets its name from its trapezoidal shape. The frame consists of two parallel top tubes that are connected at the rear by the seat tube...

A bicycle's frame number is a unique identification number stamped or engraved into the bicycle frame. This number serves several purposes and is comparable to a car's Vehicle Identification Number (VIN). Here is some important information about the frame number:...

What is recuperation? Recuperation, a term that is often heard in the world of e-bikes, especially with mid-engine pedelecs, describes the process by which the kinetic energy of a moving object is recovered during braking and converted into usable electrical...

What is traction assistance? A starting aid is a technological support that is mainly found on e-bikes and pedelecs. Its main purpose is to make starting easier by allowing the rider to set the bike in motion with just a...