Hi,
@v0rtex: The spur gear is made by Robitronic (
www.robitronic.com)
Or
here
The chassis and the top deck are custom cut. The chassis is 12mm narrower then the standard one and flex a bit more (2mm version). I have a 3mm version for carpet aswell and this is really stiff.
@xxxkat: Yes, Excel makes them.
Cheers
Chris