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Kyu Factor


Distance between the cranks on a bicycle

Example usage: 'I need to measure the q-factor on my bike to make sure it's set up correctly.'

Most used in: Mountain biking and road biking circles.

Most used by: Professional and amateur cyclists.

Popularity: 8/10

Comedy Value: 5/10

Also see: Crank Width, Bottom Bracket Width, Pedal Spacing, Chainline,


What is the Cycling Term 'Q-Factor'?

Q-factor is a term used in cycling, and it refers to the width of the pedals and crankset on a bicycle. The “Q” in Q-factor stands for “quack” or “width”. The wider the Q-factor, the wider the pedals and crankset are spaced apart.

The Q-factor affects the rider's body position and pedaling efficiency. A wider Q-factor can create a more comfortable riding position, as the rider's hips and knees are further apart. However, a wider Q-factor can also lead to less efficient pedaling as the rider's legs must travel further to complete a full revolution.

The average Q-factor of a modern-day mountain bike is 168 millimeters, while the average Q-factor of a road bike is 146 millimeters. However, this is just an average and there is a wide range of variance in Q-factor measurements. Some riders may find a wider Q-factor more comfortable, while some may find a narrower Q-factor more efficient.

In order to determine the best Q-factor for your individual needs, it is important to take into account your body type and riding style. With the right Q-factor, you can maximize your pedaling efficiency and improve your overall cycling experience.

Q-Factor: The Cycling Term Explained

The term Q-Factor is used in cycling to refer to the width of a rider's stance. It is the distance between the pedal attachment points on the crank arms, measured horizontally. Q-Factor is important in cycling as it affects the rider's comfort and performance, as well as how efficiently the rider is able to use their power.

The term Q-Factor was first used in the late 1980s in the United States. It is believed to have originated from the term ‘Q-Distance’, which was used to describe the distance between the pedal attachment points on the crank arms. By the early 1990s, Q-Factor had become a widely accepted term in the cycling industry.

Today, the Q-Factor of a bicycle is an important factor in determining the bike's performance, as well as the rider's comfort. It is important to consider the Q-Factor when selecting a bicycle to ensure the rider is able to use their power efficiently and comfortably.

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