The research team led by Hong Do-gwan at the Korea Electrotechnology Research Institute (KERI) announced on the 27th that they developed the world's first "non-contact magnetic gear applied ...

With the variety of stern-drive units available from MerCruiser, it is getting difficult to decide which unit works best and in what applications. The Bravo Three is a twin, counter-rotating prop ...

A British engineer has adapted a steel frame into a flying machine capable of levitating 20 metres off the ground. Nicknamed Swarm Man, the device uses 54 counter-rotation propellers to give flight to ...

In the world of drones, propeller choice is key to performance. Selecting the right props can have a major effect on things like flight time, vibration, and a whole host of other factors. Thinking it ...