A per se very nice model, unfortunately it does not work and the assembly is at times extremely fiddly and - just for kids - frustrating. According to the manual is first assembles sections, which also works out reasonably. These sections are then screwed gradually together, with a.) Many transitions simply do not go together, and b.) You barely have the option of using the bolts and the associated nuts, without other parts unscrew again, one comes easily with your fingers not out (even small children's hands are as overwhelmed). From bottom to build (in one piece) upwards as would probably significantly better. It is for children aged 8, the manual therefore does not have to be as detailed as in Lego, better readability, greater representation, a few more intermediate steps etc. would all but facilitate and minimize errors. When everything was somehow made to fit and also the cables were connected ... Nothing. The rotor does not rotate, and even if the gears away (so the engine does not turn so much to have) at a standstill. It is now just the winter, maybe what happened to direct sunlight in the summer, but I expect that just under a 60 W lamp something happens. Either the solar cell plain broken (the engine works, a 1.5 V battery and the rotor moves very fixed) or is completely wrong size. Too bad, our son had a lot of fun with the whole construction, but the occasional assembly frustration and then missing functionality are already angry.
