The two supplied Pinion make the model each even faster. Needless I think, because it is so well almost too fast for the living room. Steering and speed are fully proportional and well controllable. The slow driving characteristics are not the best but still go that way. The turning circle is about 70cm, making it nice and small. One battery charge with 2000 mAh NiMHy holds min. 1/2 hour - great!
Metal you're looking at this model in vain. Everything, even the two gears are made of plastic. This makes the buggy quite rickety. The screw must be all check before the first start. But be careful: tightening would be the wrong term here! Easy Fix is more like it.
The suspension needs to be adjusted because of the buggy with inserted batteries unevenly and too easily to the ground by springs-.
Certainly not built to last, but definitely a nice fun device.