Rake, also known as the steering head angle or fork angle, refers to the angle at which the front fork of a motorcycle is inclined relative to the vertical axis. It plays a significant role in determining the handling characteristics of the motorcycle. While there is no fixed value that universally defines "too much" rake, extreme rake angles can have notable effects on the bike's performance and stability.
Motorcycles with a larger rake angle (smaller fork angle) tend to have more stable straight-line stability and are generally less responsive to quick steering inputs. This can be beneficial for cruising or high-speed stability. On the other hand, motorcycles with a smaller rake angle (larger fork angle) tend to be more nimble and responsive, making them suitable for sportier or agile riding styles.
It's important to note that manufacturers design motorcycles with specific rake angles to achieve desired handling characteristics for their intended purposes. Modifying the rake angle without proper understanding and engineering considerations can significantly impact the motorcycle's stability and handling, potentially compromising safety.
If you are considering modifying the rake angle of your motorcycle or if you have concerns about the rake angle of a specific model, it is recommended to consult with a professional motorcycle technician or engineer who can provide expert advice based on your specific motorcycle and intended usage. They can assess the potential effects of any modifications and guide you in making informed decisions regarding the motorcycle's rake angle.