(It’s why curveballs curve.) This can be used for propulsion on a boat, by spinning a tall cylinder called a Flettner rotor. This takes advantage of Magnus effect to generate thrust. The boat ...

[Benjamin Prescher] is working on the second version of his single rotor Ball-Drone, which uses four servo-actuated fins for control. Mk II in action The first version of the ball drone flew but ...

The technical name for the disc in disc brakes, the rotor is a metal platter that ... causing the calipers to squeeze their brake pads against the rotors, the resulting friction slows the ...

Even drivers who take good care of their vehicles often forget about the brake fluid. It’s generally not changed in short, frequent intervals like motor oil, although automakers do recommend ...

Upgrade your car set up by installing accessories and top-quality car parts from AutoZone, where you can get 20% off $100 or more purchases, valid until 5/4. Receive FREE next-day delivery if you ...

The Duralast Platinum 24F-AGM is part of the Car batteries test program at Consumer Reports. In our lab tests, Car batteries models like the Platinum 24F-AGM are rated on multiple criteria ...

Unlock to see our ratings and compare products side by side Life test measures how a battery endures repeated charge-and-discharge cycles at hot-climate engine-compartment temperatures. The more ...

This generates excess heat that can damage the rotor and other brake and wheel hub components if you don’t replace the failed part in a timely manner. Another sign of a dragging brake is ...

THE brake illustrated herewith was designed for use on the flywheel of a heavy Gordon job printing press, having the driving motor belted to the flywheel. It was necessary to construct the brake ...

When the brake pads close against the spinning rotor, this creates a certain level of friction. The friction converts kinetic energy that has been building up in your motorcycle, transforming it from ...

Brake fluid transfers the force of your foot pressing on the brake pedal to the brakes at all four wheels. Fluid-filled, air-free channels extend from the master cylinder in the engine compartment ...