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The two metal arms connected to a bicycle's pedals

Example usage: You need to tighten the bolts on the crank-arms to make sure your pedals don't slip.

Most used in: Cycling circles around the world.

Most used by: Cyclists who like to tinker with their bikes.

Popularity: 8/10

Comedy Value: 4/10

Also see: cranks, crank arms, chainrings, bottom bracket spindle,


What Are Crank-Arms in Cycling?

Crank-arms are the two arms that connect the pedals to the bottom bracket of a bike. They are typically made of aluminum, steel, carbon fiber, or titanium, and come in a variety of lengths. Crank-arms are an important component of a bike’s drivetrain, as they are used to transfer the force of the rider’s pedaling to the drivetrain.

Crank-arms come in a variety of sizes and lengths, so it’s important to choose the right size for your bike. Generally, the shorter the crank-arm, the more efficient your pedaling will be, as it will allow for a shorter stroke. Longer crank-arms, on the other hand, will provide more leverage, making pedaling easier but less efficient. The most common crank-arm lengths are 165, 170, and 175 millimeters.

The length of your crank-arms can also affect your pedaling speed. Studies have shown that riders with shorter crank-arms tend to have higher cadences, while those with longer crank-arms tend to have lower cadences. It’s important to choose the right size crank-arms to ensure that your pedaling is efficient and comfortable.


The Origin of Crank-Arms in Cycling

The term 'crank-arms' originated in the context of cycling in the late 19th century. Crank-arms are the metal rods that connect the pedals to the bottom bracket of a bicycle. The first use of the term dates back to 1883 in the United Kingdom.

The earliest reference to crank-arms in a bicycle was in a British patent application. The patent was awarded to Edward Joseph Marks, a British inventor, who applied for a patent for a bicycle with a 'crank-arm and connecting rod'.

Since then, the term 'crank-arms' has been widely used to refer to the metal rods that connect the pedals to the bottom bracket of a bicycle. In addition, the term is also used to refer to the arms of a crankset, which consists of the crank-arms, bottom bracket, and chainrings.

In the modern day, crank-arms are a critical component of any bicycle, and are used in a variety of different bicycle designs. From road bikes to mountain bikes, crank-arms are essential for providing the cyclist with the power to move forward.

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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.

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