Second 4 axle crane truck.

I started this model end of the year 2000. This one was supposed to be more realistic (in the way it operates) and nicer looking than previous attempts at a mid-size crane truck.

This crane uses ropes and pulleys to raise/lower the boom. The boom operation is powered by two motors, same for the hook operation. Driving/sterring is done manually. Two motors to raise/lower the stabilizer legs, and a motor to rotate the turntable.

	The base chassis. Stabilizer legs assembly and turntable motor can be seen (between the 2 rear axles).
	The gearbox mechanism of the space shuttle is located in front of the rear axles. Each of the four gears actually links to a stabilizer leg, so they operate independently.
	This shows the length of the boom for travel mode. On top of the front stabilizer legs, you can see the two motors going into the gearbox.
	The finished model. The air tanks on the side are for looks only. The rearmost axle is countersteered.
	Top view of the crane truck and the accompanying trailer to carry the boom sections. Here the trailer is pulled by a heavy-duty pickup truck.
	Stabilizers down; line up the boom with the trailer, and attach sections with cross pins.
	Notice the yellow string hanging on the side; it attaches to the last section of the boom, to give better leverage.
	Attaching boom section 2. You can see the axles (8 long) to secure the sections.
	Attaching last section. You can see the string now attached. Now for the fun part: lifting the whole boom.
	My four year old daughter standing under the five feet tall boom.
	The yellow lever on the side switches the output of the motors between the boom and the hook operation (only one operates at a time).
	The two blue technic bricks click in a cog wheel and prevent the boom and hook from falling down when they are not conected to the motors.
	Top view shows the overhang of the turret. I have a few more pictures below.