Yamaha Hatsudoki Kabushiki Kaisha

Keitaroh Hayashi

Manabu Kobayashi

Two embodiments of compact engine assemblies wherein the engine output shaft drives a driveshaft to which a flywheel is affixed. The flywheel is positioned closely adjacent one end of the engine output shaft and the engine output shaft drives the driveshaft by a gear drive that is positioned between the end main bearing of the engine output shaft and the first adjacent intermediate main bearing for limiting torsional stresses on the driveshaft.

Growing community of inventors

Iwata, Japan

Keitaroh Hayashi