Hello everyone, I am quite new here as well as Lego world, but I am very happy to introduce my first MOC which spent more than 2 months to complete - Mercedes Benz Arcos Tractor Truck.
At first let's check some parameters of this MOC:
Parts: around 2500, 100% Lego genius
PF: XL motor x1, Servo motor x1, IR receiver x1, IR controller x1, Big Battery box x1
Pneumatics: 1x6 Pump x1, 1x5 Cylinder x1, 2x11 Cylinder x1, Switch x2
I was inspired by building Muuss's MOC based on 42043 B mode.
After that I thought why don't I improve something to make it more powerful and beautiful, that's why this MOC could happens.
I didn't use too many rare parts, most of the parts(approx 90%) can be found from 42043 and 42029.
The truck body has 19 studs width and 29 studs height, so I used 81.6x38mm wheels to compare the size.
Rear axle has driving by XL motor and front axle has steering by Servo motor.
There are 4 yellow absorbers in front axle and 2 in rear.
The head of truck is controlled by pneumatic to open and close. The trailer locker is controlled by pneumatic as well.
I didn't use PF to control the pneumatic pump because lacking of the PF You may have to manually do the pumping and switching.
I put pneumatic hoses, switches and pump into black box at the back of head together with IR receiver.
One switch is controlling switch cylinder on head and trailer, another is controlling cylinder open and close.
It looks pretty tidy and easy to control.
Some details from different position.
There are not so many gear drives inside the truck so I guess you can easily build your own truck like this.
I didn't have chance to make any instruction on it, but you can refer the photos as inspiration for your own build, I believe it will not be too difficult.
I used my 4 years old son to have a real size comparison so you might have an idea on how big it is
Check the video below for more information of this build. Hope you like it.
Edit: I am not familiar on how to insert video on youtube, can only attach the URL...