A month ago I decided to make an excavator, first I was thinking about a mechanical powered one, but later I realized, that The mechanic cylinders are not that much powerful as I need. So I decided to do a pneumatic powered excavator. I had to buy the Lego Technic 42053 excavator because I needed the two biggest pneumatic 19478 cylinders to lift up the bang, one for the arm and fourth to move with the bucket. This excavator is based on pneumatic system v2. Its half rc and half manually controlled, that's sometimes hard if you work with it in terrain. In a few months, I am planning to build an updated fully rc version. Here is the video of the excavator:
Parameters:
length: 36 cm Max dig deep: 18cm
Width: 17cm Max speed: 0.28km/h
Weight: 1320g Electric motors: 3
the tracks mechanism
The cabin