Depending on how you look at it, either a lot or not very much has changed about the way bikes shift gears since the mid-19th century. A lot has been refined along the transmission path, in which your ...

Don't like paying for pressurized air for your bike tires? Don't like energy inefficient vehicles? Make this automatic bicycle pump on the cheap and steal from a car. Instructables user Aleksi shows ...

Every year, the ECE department of Carnigie Mellon University hosts Build18, an engineering festival intended to get students out of the classroom and into the workshop. [Andrew Toth] along with team ...