I present you my Moc of grader Number of parts: 1891 --> x1 XL for propulsion, x1 servomotor for steering and x1 IR receiver --> all functions are pneumatics -> x1 Lmotor to drive 2 compressor cylinders, x1 airtank, x1 automatic compressor shut-off valve, x4 control valves, x4 pneumatic cylinders. --> 42030 wheels --> 6cyl. in line fake engine The blade cylinders are independent, it allows to tilt the blade