In development
This is one of my little project in scale 1:14 I've got under development, and planning fabricating a series of. It's my own creation, inspired of the Hitachi EG110R (and similar other brands) tracked dumper with a 360 degree swivel) Those machines are in the 10-12 Ton load capacity size, but I wanted to 'beef up' my version and have ended up with a 45 Ton loading 'beast'

It will take about as much as a Carson Semi dumper, and will naturally be able going where a semi truck can't)
Some spec's planned;
* Single ribbon dozer tracks
* Brushless drive motors, one at each track, 12V
* Battery compartment in the under carriage, planning space for up to 2 of 5-6000 mAh LiPo's
* Top speed 4 times of an tracked excavator, like 20 km/h (13 mph) in full scale
* Mainly made of steel, with some alu details on the dumper body and cabin
* Gearmotor tipper spindle, for simplicity, no hydraulics
* Self weight, approx. 12 kgs (26 lbs)
* Fully load weight, approx. 28 kgs (62 lbs)
* Dump body, volume approx. 10 Litres (2.6 US Gal)
* Pricerange 3000-3500 USD, RTR
Will keep the thread updated as news happens)