nature of Rovers means that they must get by with just a single set
of wheels - Unlike automobiles where you can change tyres at your
local service station. Rover wheels must be light, durable, and perform
whatever the terrain or weather condition.
As a result Rover wheels don’t, have separate tyres and
hubs, but rather a single wheel made from aluminum, Stainless Steel
and other composites, all stable in extreme environments - no inflated
rubber here. Treads and cleats on the wheels provide traction and
grip for climbing in soft sand and scrambling over rocks.
LEGO® wheel and tyre combos are for the most part ‘Earth
centric’, in that each wheel is comprised of a matching hub
and tyre – just like your family car. Most LEGO® Technic wheels
have a diameter ranging between 30mm and 80mm (with a few notable
exceptions sitting outside each extreme). I was looking for a design
solution which was a little more in keeping with the sprit of real
Rover wheels, but like always implemented through LEGO® .
The wheel design had to support the operational weight of my YogiCub
Rover, while providing sufficient grip and traction over uneven
terrain (The lounge room floor with complementary magazines). Oh,
it had to look the part as well!