What is the difference between a front hub and a rear hub in BMX?
The front and rear hubs in BMX differ in design and function, as they have different tasks to perform and specific requirements. Here are the main differences between them:
1. Position on the bike:
- Front hub: as the name suggests, the front hub is located in the front wheel of the BMX bike.
- Rear hub: The rear hub is integrated into the rear wheel of the BMX bicycle.
2. Tasks:
- Front hub: the main task of the front hub is to connect the front wheel to the fork of the BMX bike and allow the rotation of the wheel. It supports the steering and contributes to the balance of the bike.
- Rear hub: The rear hub is more complex because it not only allows the rear wheel to rotate, but also allows power to be transmitted from the rider to the rear wheel through the drive and freewheel system (usually equipped with a chain drive on BMX bikes). It also has a brake disc or brake shoe attachments to allow braking.
3. Construction:
- Front Hub: The front hub is usually of simpler construction and has bearings that allow the wheel to rotate. On BMX bikes with front brakes, it may also have attachments for the brake.
- Rear Hub: The rear hub is more complex and includes bearings to allow the wheel to rotate, as well as a drive and freewheel system that allows the rider to propel or roll the bike without pedaling. It may also have special attachments for the brake and drive.
4. Load:
- Rear Hub: The rear hub is usually subjected to higher loads than the front hub because it must transmit the driving force and braking force.
Overall, front and rear hubs are specifically designed for their respective functions and requirements to ensure efficient performance and safety while BMX riding.