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240 Landmarks of Japanese Automotive Technology
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240 Landmarks TopChassis > REAS/X-REAS
 REAS/X-REAS
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This damper mechanism has a simplified structure based on rational considerations. It is a shock absorber system that aims to improve ride quality and driving stability by generating added damping force in accordance with differences in stroke speeds of right-left or diagonally linked wheels.
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Storage location:YAMAHA MOTOR CO., LTD.
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Year manufactured:1997
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Manufacturer:Yamaha Motor Co., Ltd.
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Classification:Drawing, replica
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Current status:In storage: not open to the public
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Model
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Model / Weight
Company name:Yamaha Motor Co., Ltd.
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Usage:Suspension
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Location:-
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Installation vehicle:Toyota Supra, Hilux Surf, Crown Athlete VX
Audi RS6, RS4, etc.
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Use of installation vehicle:Passenger car
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Year of manufacture:1997
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Structure, type, means, method, etc.:Two shock absorbers are connected via an intermediate unit using only a single pipe to generate added damping force in accordance with differences in stroke speeds.
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Function, effect, etc.:It improved both driving stability and comfort by individually optimizing the damping characteristics of the suspension system for vehicle vibration modes including bounce, roll, and pitch.
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Technical overview:Conventional similar products tended to be complex and large-scale, whereas this system has the same effect with a very simple structure.
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Points of interest, topicality:Although there are many similar systems in the world, this system was by far the most frequently used. It was used for super performance vehicles, and highly regarded outside Japan.
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Features:・ A rational and simple system.
・It used the advantages of a hydraulic system, such as high response and energy transfer.
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Reference materials:Fluid Power System No. 34
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Introduction:・ Among systems with similar functions, this was the most frequently used system in the world.
・It was used effectively in the main racing series in Japan, contributing to championship wins.
・It is a rare example of a purely Japanese chassis technology adopted in European cars.
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