This design can carry 150 kilos of bulky load; and the German lass who builds them with her friends at a co-operative farm is also sharing the design
It can be used as a 6 km/h handcart (that is the maximum permitted on European streets) or as a trailer behind a normal bike or an e-bike – the brakes have to be linked so using an e-bike that already has the switched levers would be safer and more convenient, although an unpowered bike would work the cyclist would still have to be quite strong and the whole thing would handle like riding a 3 wheeled e-bike but with the powered rear wheel on a pivot (and affected by the wind, road surface etc) – having the power spread across two wheels should be safer.
EN : Electrically Powered Bicycle Trailer & Hand Cart (DIY)
Construction details (Achtung: Auf Deutsch)
DE : Bauanleitung Carla Cargo Crowd ? postfossil mobil
