My first excavator ! Equiped with driving, rotating superstructure, internal compressor and 3-sections pneumatic digging arm.
Two XL motor (in the frame) drive the crawler with 8/24 reduction. A M motor drives the supertructure with worm gear on turntable. The internal compressor is operated by a M motor. The pneumatic digging arm is controlled at distance. Why has it an internal compressor and external controller ? The answer is simple, at this moment, I had one only battery box, so I had to generate the pressure in the moc, near the BB. Controller is used to control and operate the excavator.
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