Stepper motors, gear trains and timing belts from old ScanJets can be found for pocket change any day of the week. For cheap and accurate linear motion, we couldn’t come up with a build that ...

Roller-pinion drives use a motor-actuated pinion and linear rack to convert rotary motion ... behaving like a cam and follower instead of a spur gear. A cycloidal curve is created when a point ...

One problem with electric motors is that because of the speeds at which they rotate, to be useful in most vehicles, they need a gear reduction ... based in Texas called Linear Labs thinks it's ...

Electronic preloading of rack-and-pinion drives yields backlash-free motion with minimal friction, improving precision and efficiency. • Rack-and-pinion actuators can have accelerations and ...