Vehicle, Mobility and Transportation Design Sada Hubless Foldable Bike by Gianluca Sada The Sada Bike is a hubless, foldable and portable bike with 26 inch wheels. The wheel size allows to have an ergonomic posture in the ride version like a classical bike. The structure design allow to support each wheel in 3 points: the front ones are inserted in the fender structure, while the rear ones are allocated inside the rim. The chain transmits the motion to the lower wheel that transfers torque to the rim. The folding system has a fulcrum in the center that allows to close all frame. The bike can be put into a trolley and the absence of spokes leaves the space to insert other things.