VSBD (Vertical Shaft Bicycle Drive)
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This unique design allows you to easily change gears and alter the drive-to-driven ratio without needing any extra tools or equipment. Simply stop for a few minutes, switch out the small round gear, and be prepared for challenging hills. The apparatus is built specifically for bikes and incorporates an electric or gas-powered vertical shaft with a centrifugal clutch. The motor or engine is mounted above the rear wheel, while a flat driven gear, featuring teeth on one side, engages with the small round gear on the vertical shaft. Power transmission occurs through clamping the gear onto the spoke nuts of the inside rear wheel rim.
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