In this article, Motorcycle Engineer Roland Hoover provides an overview of the motorcycle “shimmy” condition and discusses the factors that contribute to motorcycle crashes. He examines…
The automotive experts at Robson Forensic have developed a simple motorcycle anatomy overview for clients who may not be familiar with the design elements of a motorbike.
The CDC reports that 5500 motorcyclists died in motorcycle crashes in 2020, up 22% in the last decade.
The experts at Robson Forensic have investigated hundreds of motorcycle crashes. These crash investigations typically involve crash reconstruction and the evaluation of operator actions, alleged defects related to motorcycle design, manufacture, or maintenance, and issues related to roadways.
Frame - The foundation for the motorcycle. The design varies greatly and typically includes metal components joined by welding. Materials range from steel tubing to extruded aluminum.
Front Suspension - Telescopic front forks are the most popular front suspension on a motorcycle. They consist of a tube sliding inside a slider. Internal parts include springs, oil and damping components.
Rear Suspension – A swingarm with a single or dual shock absorber is typical. Linkage arrangements enable varying levels of suspension travel range.
Rake Angle - The angle that the steering head axis makes relative to a vertical line drawn to the ground. “Choppers” have a larger rake angle than sportbikes. Rake angle affects the “trail” measurement and motorcycle handling.
Trail - The distance the front tire contact patch is behind a line drawn from the steering axis to the ground. Trail affects the motorcycle handling.
Wheelbase - The distance between the front axle and rear axle. Wheelbase affects the handling of the motorcycle.
Handlebar Height – Some states have regulations for how high the handlebars can rise above the seat or the rider’s shoulders.
Seat Height – The seat height on a motorcycle can range from 26” for cruisers up to 34” for dual purpose motorcycles. The seat height is important to consider for smaller motorcyclists.
In this article, Motorcycle Engineer Roland Hoover provides an overview of the motorcycle “shimmy” condition and discusses the factors that contribute to motorcycle crashes. He examines…
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In this article, motorcycle expert Roland Hoover discusses aftermarket motorcycle parts and accessories. He examines the standard of care for vehicle manufacturers, part suppliers, mechanics, and…