Gearbox Design for Train Engine Upgrade

Train engines with rated speed of 900 rpm are being replaced with modern engines with rated speeds up to 1800 rpm for improved emissions and fuel economy. The train is propelled by a diesel/electric power system with a diesel engine driving an alternator or generator... (Budget: $250 - $750 USD, Jobs: 3D CAD, 3D Design, 3D Modelling, CAD/CAM, Electrical Engineering, Electronics, Engineering, Mechanical Engineering)