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Yamaha develops low-speed self-stabilization tech for motorcycles

Yamaha develops low-speed self-stabilization tech for motorcycles


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Yamaha has unveiled a prototype motorcycle with balancing technology that should help reduce the number of bike accidents. With the somewhat clunky name of Advanced Motorcycle Stabilization Assist System (AMSAS), the system can be applied to existing motorcycle designs without modification to the frame or major components.

Yamaha engineers have put AMSAS on a YZF-R25, which is powered by a 250cc DOHC inline-twin with an offset cylinder design. Where it differs from a production model is in its 6-axis Inertial Measurement Unit (IMU) that work in conjunction with drive and steering actuators.

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“When starting or stopping, the drive actuator fitted to the front wheel aids with stability, and from there up to about 3 mph, the steering actuator attached to the handlebars takes over,” explained Project Leader Akitoshi Suzuki. As a result, the bike "can move at walking speeds without falling over, regardless of the skill level of the rider."