A short presentation of the external appearance of the model, driving videos will soon appear on my channel. This is a 1/11 scale model of the Czech Tatra 813 Kolos 8x8 truck (although the manufacturer of the model declares a scale of 1/12). The model was built from the Cross RC DC8 kit, which I bought in the Belgian MCM Racing shop:https://www.mcmracing.com/en/3-mcm-ra...
Including all the breaks, and there were a lot of them, it took me about 8 months to assemble the model.

The inspiration for such painting of the model was a photo of a real truck from the article: https://www.nztrucking.co.nz/wheels-o...
Tara trucks have a characteristic structure - a central load carrying backbone tube, independent swinging half-axles. They had been produced since 1967 to 1982. The Tatra 813 can tow trailers with a total weight of up to 100 tons. A noticeable characteristic of Tatra trucks is also the fact that the wheels of the unladen vehicle are arranged in the shape of the letter "V".

I also put on the model elements that are not available in the kit from the Cross RC manufacturer: winch, reversing light, front marker lights, three additional headlights in the front (one on the roof, two under the front windows), two warning lights on the roof, I added the rear direction indicators in half of the rear lamps.

Of course, I also modified the electrics, among other things, I separated the main headlights of the model into separately activated low beam and high beam. My wiring diagram is available at the link: https://drive.google.com/file/d/14YkL...

The original front suspension seemed too firm to me, so I replaced the springs of the auxiliary telescopic shock absorbers.

A video with the stages of building the model can be viewed at the following link:    • Tatra 813 Kolos 8x8 - Cross RC DC8 - ...  
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Technical data and used parts:
Length: 784 mm,
Width: 256 mm (with mirrors),
Height: 253 mm,
Weight: 10,7 kg/23,6 LB. (with Lipo 3S)
Engine: Hobbywing QuicRun Fusion 540 1800kV Combo FOC 2-in-1 (brushless), integrated ESC 40/160A,
Two-speed gearbox Cross RC, 12T rack on the motor shaft,
Battery: Lipo 3S 11,1 V,
ESC: integrated with the engine,
Transmitter: Radiolink RC6GS V2,
Receiver: Radiolink R7FG v1.3,
Steering servo: two DS3235SG 180 ° 35 kg (Coreless Digital Servo) operates at 8.4 volts (from Cross RC 10A UBEC),
Servo gears: DS3225SG 180 ° 25 kg (Coreless Digital Servo),
Light module: Cross Rc LC3 + Das Mikro TBS Mini,
Sound module: Das Mikro TBS Mini, 8Ohm 3W speaker.
Varnish: Granit Quality Parts RAL 1028 + Boll clear varnish VHS (both two-component) + spray Deco Color Megafelga RAL9005.
The cables at the lamps and the rear lamps have been taped with black silicone.
Winch: worm gear motor JGY-370 12V 18 RPM, winch controlled by a small single-channel receiver and remote control for rc winches.


Materials for the Das Mikro TBS Mini module:
https://drive.google.com/drive/u/1/mo...

My other projects can also be viewed on Flickr:
https://www.flickr.com/photos/kolekcj...
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Camera: GoPro Hero 8 Black
Video processing program: Open Shot Video Editor

#crossrc #offroad #rc #truck #rcmodel #tatra #tatra813 #crossrcdc8