This gearbox was mounted to the frame of our race car, received power from a CVT, outputted to halfshafts for the rear wheels, a timing pulley for the front wheels, and an idler pulley for the same belt system.
This gearbox had three main loadings. The idler pulley caused 700 lbs of force on the gearcase. The input shaft was attached to a CVT which had a belt with 300 lbs tension. Lastly, the interaction between the gears resulted in bearing reactions at the bearing seats. This gearcase was optimized using Solidworks FEA with these loadings in mind.
This gearbox competed in three endurance races, totaling to 12 hours of race time. This gearbox functioned for hours of testing and despite some minor issues, remained operable through it all. This gearbox reamins functional to this day on the TR22 race Car which is still ran as a test car.