Terex Unit Rig MT 6300AC

400 ton (363 tonne) ultra-class mining dump truck with Diesel electric drivetrain, powered by a 20-cylinder MTU/Detroit Diesel 20V4000 with 3750 horsepower.

The truck runs on six 59/80R63 tires with a diameter of 4 meters.

The hauler belongs to the fleet of Western Australia based Citic Pacific iron ore mine.

Trucks of this size class are intended to be loaded by rope shovels ore large hydraulic shovels like the Caterpillar 6090 FS.

 

Terex Unit Rig mining trucks are nowadays part of Caterpillar's product range where this model is still available as the 798.

 

My model in 1/28.5 scale is fully remote controlled, using a Sbrick controlled via bluetooth and the Brick Controller 2 app. The following functions are realized:

 

- Planetary rear axle driven by one Power Functions XL motor

- Front wheel steering by a CaDa micromotor

- Tipping body using a Power Functions L motor

- Front and rear lights, using five pairs of Power Functions LEDs

 

Furthermore, the model features the following mechanical functions:

 

- Suspended rigid rear axle

- Spring-loaded rigid front axle suspended on four longitudinal control arms and a Panhard rod

- Openable cabin doors

- Openable inspection hatch

- Deployable access ladder

 

The huge tires are non LEGO 140 mm crawler tires for 2.2 inch rims, mounted to LEGO Power Puller rims.

Done