MOC-51409 8 Speed Gearbox Using just 2 Levers

The product is designed by TechnicBrickPower. This is an 8-speed gearbox that does the seemingly impossible – creating eight speeds using just two levers/selectors. Normally two levers are used to create a 4-speed gearbox – however, this design allows for 1 of 8 different speeds to be selected.