A very general question:
What is the technical reason to use a belt instead of a chain to drive the M3W's rear wheel?
Drive chain systems seem to be so much more forgiving than the sensible belt drives.
On motorbikes chains are standard. Only few producers - like HD - use a belt and those are not technology leaders at all. (BMW, Guzzi or Honda cardan drives would make even more sense but a £30k to £40k toy has to have low cost components, as we all know)


Hannes
once: Green M3W; 2013
now: Red 4/4 Sport; 2011
and some practical cars for use in real life