Wheels are a very important part to a bicycle. Without the cornering force and camber thrust on the bike, it would be impossible to move or balance. On a normal bike there are two wheels: the front and the back. There is a torque applied on the tires that is called the yaw torque. It happens on the front wheel and is caused by two opposite torques:
- The self-aligning torque: asymmetric forces that occurs behind the geometric center of a contact path. It happens on the front wheel away from the direction the bike turns. This makes the radius of the turn bigger.
- Torque that is focused towards the direction the bike turns. It is caused by the bike turning and the contact path during that turn. Since it happens toward the side the bike turns, the radius gets smaller.
This is an example of a contact path during a right hand turn:
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