A single-arm motorcycle, also known as a single-sided swingarm motorcycle, refers to a type of motorcycle design where the rear wheel is mounted on a single-sided swingarm instead of the traditional dual-sided swingarms. In this design, the swingarm extends from one side of the motorcycle's frame and supports the rear wheel.
The main purpose of a single-arm swingarm is to provide easier access for wheel removal and maintenance. It allows the wheel to be removed without the need to disassemble the entire rear suspension system, which can be time-consuming. This feature is particularly useful in racing or track environments where quick tire changes or repairs are necessary.
Single-arm swingarms are often seen in high-performance motorcycles, especially in sportbikes and some sport touring models. The design can also provide aesthetic appeal, showcasing the rear wheel and suspension more prominently.
In addition to the functional and visual benefits, single-sided swingarms can have an impact on the motorcycle's handling characteristics. The single-arm design can contribute to reduced unsprung weight, enhancing the motorcycle's ability to handle bumps and uneven road surfaces. It can also improve the stability of the rear suspension, allowing for better control and traction.
Overall, single-arm motorcycles are known for their distinctive look, ease of maintenance, and potential performance advantages. However, it's worth noting that the design may add complexity and cost to the manufacturing process, and it may not be present on all motorcycle models.