By altering the combination of four gears, four different gear ratios can be obtained: 126:1, 441:1, 1543:1 and 5402:1. -- These low output speeds are ideal when high torque is required as opposed to speed. Comes with a . . .

An extremely useful device that can power a hexagonal shaft in a horizontal or vertical position relative to the motor. -- The device consists of a metal gearbox casing, into which a supplied motor is attached. Various . . .

This versatile and easy-to-construct motorized gear box is designed for high torque output and speed. -- The one-touch slide switch allows for three selectable gear ratios; no need to take apart the gear box to change g . . .

The planetary gear box system is a highly versatile system for reduction of high RPM electric motors for high-torque low RPM applications. -- This type of gear reduction system is often used in precision instruments bec . . .

Designed for high torque output and suitable for constructing models such as tanks, buggies, tracked vehicles, etc. -- The gear box allows 2 gear ratios, 41.7:1 and 64.8:1, to be selected. The gear case is injection-mol . . .

Drive chain for Gearbox Motor (30391-18). 39" long. . . .