This is my version of the BR 80.
Needed an engine to pull my six hoppers. 9 volt engines lack the power, but the old 4,5 volt engine has no problem at all. Had to modify a few parts. Painted the engine red, modified two old technic pins and used copper wires (2mm) instead of flex cables. It's losley based on Puntcom's BR80. You can built it with standard LEGO parts, but it won't be motorised. Hope you like the result.