Rotor

The term "rotor" can refer to different parts of a motorcycle, depending on the context. Here are a few possible meanings:

Ignition rotor: The ignition rotor is part of a motorcycle's ignition system. In traditional switch ignition systems, the rotor is mounted on the camshaft and rotates with it. It is in contact with the switch and plays a role in distributing electrical current to the spark plugs.

Magnetic rotor: In electronic ignition systems, a magnetic rotor can be used to detect the position of the crankshaft. It often incorporates a magnet that generates an electrical signal with each rotation, enabling the ignition system to synchronize ignition with crankshaft position.

Brake rotor: The brake rotor, also known as the brake disc, is a component of a motorcycle's braking system. It is attached to the wheel and rotates with it. When the brake pads squeeze the rotor, friction is created which slows down the rotation of the wheel, causing it to brake.

Starter rotor: Some types of motorcycle, particularly those with electric starters, may have a starter rotor. This is usually a part of the electric starter which is driven by the electric starter motor to turn the engine and start the motorcycle.

It's important to clarify the context or provide additional details to get a more precise answer on the specific type of rotor you're referring to.