There are a few reasons why motorbike helmets don't typically come with automatic wipers:
Design and functionality: Motorbike helmets are designed to prioritize safety, comfort, and aerodynamics. Adding automatic wipers would require significant modifications to the helmet design, which could impact its structural integrity and compromise its ability to protect the rider's head in the event of an accident. It would be challenging to integrate wipers seamlessly into the helmet without compromising its effectiveness or adding bulk and weight.
Limited utility: Unlike cars, motorcycles are more exposed to the elements, including wind and rain. While some helmets come with built-in visors or face shields that can provide protection from rain, incorporating automatic wipers into a helmet might not be as effective due to the design limitations. Motorbike helmets are generally designed to allow for better airflow and visibility, and adding wipers could obstruct the rider's field of vision or cause other safety concerns.
Complexity and maintenance: Automatic wipers require additional electrical components, such as motors, sensors, and wiring, which would increase the complexity of the helmet. This could lead to more potential points of failure, requiring regular maintenance and potentially compromising the overall reliability of the helmet.
Cost: Adding automatic wipers to a motorbike helmet would likely increase its cost significantly. Motorbike helmets are already expensive due to the advanced materials and safety features they incorporate. Incorporating automatic wipers would add another layer of complexity and expense, making the helmets even more costly for riders.
While automatic wipers may seem like a useful feature for motorbike helmets, the challenges in terms of safety, design, functionality, maintenance, and cost make it impractical for widespread implementation at this time. Riders are encouraged to rely on appropriate rain gear, including waterproof clothing and visors, to mitigate the effects of rain while riding.