Multi. pb01, Technic, Brick 1 x 2 with Hole and Yellow Arrows Pointing Down on Both Sides (Stickers) – Set (Common Combination of Parts – May Not. LEGO set database: Control Centre II. Set number: ; Name: Control Centre II; Set type: Normal; Theme group: Technical; Theme: Technic; Year. View LEGO instructions for TECHNIC Control II set number to help you build these LEGO sets.

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A pinion gear on the motor drives a 24 tooth crown which then drives the belt system. The arms and jaw are linked together so that they move in unison. The use of belts rather than gears allows the pulleys to slip rather than stall the motor if the resistance becomes too high. Fan and 84485 System The model is supported on three hidden tires behind the skirt, two in the front and one in the rear.

Instructions For LEGO 8485 TECHNIC Control II

At this point the gear system splits into two parallel paths. A set of 24 and 8 tooth spur gears then drives a worm gearbox. Its list of functions is large and so is the modelbut what really makes it stand apart is the way that it can actually be “flown” like a flight simulator.

Note the fact that the helicopter linkage moves a greater vertical distance than the Control Center linkage. In consists of a pair of nested 4-bar linkages which are linked via a central connection.

The outer linkage is made from mostly black beams and supports the Control Center. The large A and B buttons on the Control Center command the rotor motion clockwise or counter-clockwise.

The output pulleys shown in yellow are used as cranks. A worm gearbox in the stand allows the pitch rotation nose up and down about 40 degrees. One of the front wheels is used for actual propulsion while a large fan in the rear is used to simulate the propulsion method of a real air boat.


Click for an animation of the arms and jaw in motion. Movement of the forward cables tips the head side to side, and movement of the rear cables swings the tail side to side. A set of bevel gears drives both the main and tail rotors. Click for an animation of the fan in motion. The use of belts rather than gears allows the pulleys to slip rather than stall the motor when the kego is started or stopped. Pitch The pitch of the helicopter is motorized and controllable via the side to side motion of the technoc pad.

The third model, and airboat, is not nearly as inspired as the other two but is still an excellent model. The computer image shows the horizontal links in gray and the vertical links in green.

The output axle shown in green turns a pair of liftarms which use push rods to rotate the dinosaur at its pivot axle on the stand. Image by Benjamin Wendl Click for an animation of tedhnic helicopter pitching.

It uses two of the three available motors and about half of the parts. Fan and Drive System. This model uses the Flex System more significantly than any other model, and probably to the best effect. Image by Benjamin Wendl.

LEGO Technic Control Centre II (8485)

The gray buttons in the center control programming. The left and right side are degrees out of phase. Image by Benjamin Wendl Click for an animation of the elevation in motion.

Both the head and the tail form a pull-pull loop. Oddly, the lower jaw does not really move but rather is fixed at a 90 degree and to the neck which does move. The use of a drive wheel on only one side effectively acts as a differential allowing the front 4885 to turn at different speeds.


As can be seen in the computer image, the high speed motor drives through 2 different silicone belts red and white. Finally, a worm gearbox hidden drives and supports the green axle of the gimbal with a pair of rotors such that rotation of the axle directly produces rotation of the gimbal.

The computer image shows the horizontal links in black and the vertical links in red. Both linkages are attached to ground at the structural tower shown in blue and are each pinned there on two axes.

Click for an animation of the dinosaur tipping. The total gear reduction is only 3: Click for an animation of the steering lebo motion.

Control Centre II | Brickset: LEGO set guide and database

The tail is hinged in three places horizontally, allowing it to forma gentle curve. The final image shows the nose up and down positions superimposed for comparison. Elevation The mechanism for controlling leg of this helicopted is ingenious. The axle at the center of this spur gear shown in yellow is coupled to the gimbal shown in green with a pair of liftarms such that rotation of 848 axle directly produces rotation of the gimbal. In this case, they are motorized to turn at the same rate via a motor located in the body at the approximate position a turbine would be located in a real helicopter.