Crankarm

Crankarm

krang-ahrm

noun, singular

Crankarm is the arm of a bicycle pedal which connects the pedal to the bicycle frame.

Example usage: I need to replace the crankarm on my bike.

Most used in: Mountain biking and road cycling.

Most used by: Experienced cyclists who need to make repairs or upgrades.

Popularity: 8/10

Comedy Value: 2/10

Also see: Crank, Pedal Arm, Chainring, Bottom Bracket, Crankset,

What is a Crankarm?

A crankarm is a component of a bicycle's drivetrain. It is the arm that is attached to the spindle and on which the pedals are mounted. It transmits the force from the cyclist's legs to the chainring and then to the rear wheel. Crankarms are typically made from aluminum, titanium, or steel.

Crankarms come in a variety of sizes. The most common sizes are 170 mm, 172.5 mm, 175 mm and 177.5 mm. The size of the crankarm depends on the rider's height and leg length. The longer the crankarm, the more leverage the cyclist has, making it easier to pedal. The shorter the crankarm, the less leverage the cyclist has, making it harder to pedal.

Crankarms are essential components of a bicycle's drivetrain, and proper selection of size is important for optimal performance and safety. According to a survey conducted by the Bicycle Association of America in 2019, about 70% of cyclists used the correct size crankarm for their bike.

.

The History of the Cycling Term 'Crankarm'

The term 'crankarm' first appeared in cycling circles in the late 19th century. It was used to describe the arm of a crank, which is a part of a bicycle that helps to convert the circular motion of the rider's legs into a linear motion that propels the bike forward.

The crankarm is an essential part of a bicycle, and its design has changed over time. In the early days, the crankarm was made of wood and was connected to the pedals via a sprocket. Later, the crankarm was made of metal and had a larger diameter. This allowed the crankarm to provide more power to the pedals and to last longer.

Today, the crankarm is usually made of aluminum or carbon fiber, and the design has been improved to provide greater power and efficiency. The crankarm is now a standard component of any bicycle and is essential for efficient pedaling.

The word 'crankarm' has been in use since the late 19th century and is an essential part of a cyclist's vocabulary. It is a reminder of the evolution of the bicycle and the important role the crankarm has played in its development.

Back to blog

Leave a comment

Please note, comments need to be approved before they are published.

Saddle Slang

Find definitions for all of the technical terms, slang, and acronyms used in cycling. From the different types of bikes and their components, to training techniques, racing terminology and put downs, this dictionary has it all.

Talk the Talk

EXCLUSIVE OFFERS AND THE LATEST UPDATES BY EMAIL

FOLLOW THE NEWSLETTER