Sifter droid treads?

[kresty]

So, probably bigger than the T'Rex Chasis?

Wider for sure, that says 355 x 175 x 130mm - the 355 seems to me to be about right, but it'd need to be much wider (probably could be chopped apart easily enough).  The tread also looks wrong.  (When I zoom in each link looks like it has 2 parallel lines, though I confess it's hard to tell.  The T'Rex has single lines with pointy segments).

I believe the tracks to be about 1.5" (40mm) wide from my measurements.

Aliexpress has quite a few tank track robot sizes.  I was looking over there for other reasons, but they may have some frames that'd be similar - though I doubt we'd be able to find the exact part there.

We know that they got parts from some shops in England, and the hemisphere for the white mouse faux wheels came from an online retailer, and it's omniwheels came from VEX.