[乐高式积木] LEGO 42009

With 2606 elements, the LEGO Technic Mobile Crane 42009 is the biggest, and most complex model we've built so far.

The new elements and improved functions include:
- Cross-axle with 8 tooth gearwheel without friction
- Five axles, including four-axle steering
- 8-cylinder engine
- Power Functions
- New outriggers controlled by gear box (up, down, in, out)
- Motorized telescopic boom that extends in two stages - and it can lift heavy loads even when fully extended.
- Seats and opening doors in crane and cockpit
- Large linear actuators
- Smooth surfaces gives it a very life-like look.

How long does it take to build?
I think an experienced LEGO Technic builder will probably be able to build it in 10-12 hours. So lots of building value!