The bottom bracket is a crucial component of a bicycle that connects the crankset to the frame. It is responsible for transferring the power generated by the rider’s legs to the rear wheel. The bottom bracket has undergone significant changes over the years, with new designs and materials being introduced to improve performance and durability. In this article, we will explore the definition and meaning of the bottom bracket.
Definitions
The bottom bracket is a mechanical component that connects the crankset to the bicycle frame. It consists of a spindle, bearings, and cups that are housed inside the bottom bracket shell of the frame. The spindle is the central component that connects the two crank arms, while the bearings allow the spindle to rotate smoothly.
Origin
The bottom bracket has been an integral part of bicycles since their inception. The earliest bicycles had a simple fixed axle that connected the two pedal cranks. Over time, the design evolved to include ball bearings and cups that allowed for smoother rotation. In the 1980s, cartridge bottom brackets were introduced, which made maintenance easier and improved performance.
Meaning in different dictionaries
According to the Merriam-Webster dictionary, the bottom bracket is “a bearing assembly that supports the pedal spindle of a bicycle.” The Oxford English Dictionary defines it as “a device for fixing the pedals to the frame of a bicycle, consisting of a spindle and bearings enclosed in a casing.”
Associations
The bottom bracket is associated with cycling and is an essential component of a bicycle. It is often discussed in the context of bike maintenance and repair, as it is a component that requires regular attention.
Synonyms
Some synonyms for the bottom bracket include pedal spindle, crank axle, and crankset spindle.
Antonyms
There are no direct antonyms for the bottom bracket, as it is a unique component with no direct opposite.
The same root words
The bottom bracket does not have any significant root words, as it is a specific term used in the context of cycling.
Example Sentences
- “I need to replace the bottom bracket on my bike as it’s starting to make a grinding noise.”
- “The new carbon fiber bottom bracket is significantly lighter and more durable than the previous model.”
- “Make sure to clean and lubricate your bottom bracket regularly to ensure smooth performance.”