Maybe for a month or so he was trying to build it from pieces we had, listed manual, but all the tries were incomplete cause we didn't have maybe half of non-standard pieces used there including 4 motors and many gears.
But for a New Year Gosha's aunt and uncle decided to make a present for Gosha and gave him that Lego 8043 truck set that Gosha was dreamed about!
Gosha was so happy! We even shoot that moment when we gave him that truck!
That truck is a real challenge. It took Gosha several days and many tries to build it flawless. First try took about 9 hours working non stop! He made it, but there were some mistakes that prevented gears to rotate, so the whole construction didn't move. With every try it was taking less and less time until finally he built B model in 4 hours and later main model in about 6 hours.
and pictures of the A model
After that he made those models again several times, and now he is building another models from the internet that he couldn't do before with that new pieces.
Good job Gosha and thanks to Gosha's aunt and uncle who made such a generous present to him!
