Structural analysis of Lego 42 129
42 129 Mercedes-Benz 4x4zetros test truck, which is quite large. This toy truck model is 2 1 cm high, 48 cm long and 19 cm wide, so when you really put it together, you really have to consider where to put such a big guy. The back of this Mercedes-Benz truck is designed with green building blocks.
The taxi is dark gray. Doors on both sides of the cab can be opened. The hood can be opened to see the engine inside, as well as the rotatable cooling fan, as well as some details, such as the fire extinguisher and the design of air respirator.
One of the surprises of 42 129 is the full remote control design. This car uses Lego's brand-new motor drive system. You can see that it supports the control plus system on the packaging, and it can even turn when climbing.
The bottom of 42 129 adopts two large motors, which are connected with a transmission system. 42 129 also adopts a new version of Lego differential, and there is a gearbox behind each wheel, which makes the drive system slow down. Although the gear speed is reduced by 5 times, it has the advantage of getting more torque, so this car has more torque.