30 Mar '15, 6am

#Tech Mazda MX-5 Comes With Different Counterweight Designs

#Tech Mazda MX-5 Comes With Different Counterweight Designs

Eight counterweights attached to the crank shaft [Click to enlarge image] Mazda Motor Corp changed the shapes of all the eight counterweights of the crank shaft for the engine of the company's fourth-generation "Roadster (MX-5, ND type)." The company made the change in the aim of reducing the vibration increased by improving the maximum speed of the vehicle's engine designed for FF (front-engine front-drive) vehicles. The new model of MX-5 will be released in June 2015. Thus far, Mazda has been using counterweights for reducing vibration generated by each cylinder of an engine. Though the vibrations of cylinders are generated at different timings, the cylinders have the same shape and, thus, generate the same vibration. Therefore, the counterweights basically have the same shape. In the case of the new model of MX-5, the vibration of all the drive system components is redu...

Full article: http://techon.nikkeibp.co.jp/english/NEWS_EN/20150330/411...

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