Remote operated crawler excavator

This is a remote operated crawler excavator.

I believe in the future these type of machine will be remote operated to avoid exposure of the driver. 

These machines will have an eletric/hydraulic operation. The LEGO version has some manual function, like the lateral extension of the tracks for more stability and a pneumatic operated arm. Manual pump and airtank. 

I designed a sketonized arm to minimize moving/rotating weighs, also the batterie pack would be located in the lower structure in the real machine.