Sada Bike Hubless Foldable Bike

Sada Bike Hubless Foldable Bike is an innovative transportation design that revolutionizes the concept of portable urban mobility through its unique hubless wheel system and sophisticated folding mechanism. This groundbreaking bicycle design, created by Italian engineer Gianluca Sada, features 26-inch wheels supported by a distinctive three-point system where the front points are integrated into the fender structure while the rear points are allocated within the rim itself. The bicycle's most notable technical achievement lies in its hubless wheel design, which eliminates the traditional spoke system entirely, creating a cleaner aesthetic while maintaining structural integrity. The frame, primarily constructed from aluminum alloy (7075 Ergal) through CNC machining processes, incorporates a central fulcrum that enables the entire structure to fold compactly, similar to an umbrella, achieving dimensions of 700mm x 600mm x 280mm when collapsed from its full size of 1640mm x 980mm x 530mm. The power transmission system employs an innovative approach where the chain transfers motion to a lower wheel, which then conveys torque to the rim, effectively multiplying the speed by a factor of three. This Gold A' Design Award-winning design in the Vehicle, Mobility and Transportation Design category represents a significant advancement in urban mobility solutions, offering unprecedented portability without compromising the ergonomic benefits of full-sized wheels. The design's versatility is further enhanced by its ability to transform into a trolley configuration, making it particularly suitable for intermodal transportation scenarios in metropolitan environments.

Author: Adam Dawson

Keywords: hubless bicycle design, foldable urban mobility, innovative transportation solution, compact bike engineering, sustainable urban commuting, ergonomic bicycle technology

SOURCES:
https://competition.adesignaward.com/100285

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