In some countrys it is difficult to get the motors for the 3d printed robotic lawn mower from www.reprap-windturbine.com. I tested alternative motors for the drive system and for the cutting device. These motors work very well and you also get them in USA and in Asia. To use these motors you have to make some modifikations and you need some new parts. Please read the pdf-file to make the modifikations.
Although these modifications were made for the robotic lawn mower from "Reprap-Windturbine", you can use these motors and parts for your own design. The drive motors are tested for mowers with a weight up to 4,8kg.