Bike trailer -cargo
Based on the cargo cycle . E-bike technology resolves many of the power problems towing trailers.
No link included to attach to bike as these varied between ones attached to base of sandle and read axle ends.
Scale O (1/43.5,7mm/ft)
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More information about cycle rickshaws here
https://en.wikipedia.org/wiki/Cycle_rickshaw
more 3d printed models from Recreation21 here
https://www.rue-d-etropal.com/3D-printing/3d_printed_designs.htm
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