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With just a turn of a screw, Ackeem Ngwenya’s “Roadless” wheel system switches from a narrow tread to a wide tread.
The idea is that different treads benefit different terrains.
Ngwenya’s novel approach is made possible by an interlocking network of spoke-like rods connected to discs on the wheel’s axle.
Regardless, both designs would require a very elastic tire to comply with fluctuating wheel ratios.
This video further explains Ngwenya’s vision for Roadless and how the wheel could help rural villagers in Malawi.