Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:1647584.
Because xecutor was so kind to attach his OpenScad-File of his wheel I was able to modify this wheel (even if I'm not so familiar with OpenScad). It now can be mounted on Vorwerks VR100 in the same direction like the original wheel, preserving the dust protection function of the ridge on the axle journal. I'll attach the OpenScad-File too for further modification by yourself. The fitting tires for both wheels you can find here: http://www.thingiverse.com/thing:1645190