mostlytechnic
Building the Helicopter, 6
A look at the mechanisms. The gimbal is fully assembled now, and you can see the electrical connections on the underside of the helicopter. Eventually long cords will connect to those and provide power to the two motors inside the copter. The pin holes in the light grey base of the gimbal will connect to the support structure that's yet to be built. Lego also had to cheat a bit and put a couple gears on the outside of the helicopter since there's not room inside for them. The drive system here: There's a motor in the cockpit. It has a small bush on it, connected to the large pulley via the red belt. That drives the bevel gears, which turn the two gears on the ouside of the chopper. That then drives the worm gear and then the 24 tooth gear in the gearbox, which finaly tilts the black frame of the gimbal side to side.
Building the Helicopter, 6
A look at the mechanisms. The gimbal is fully assembled now, and you can see the electrical connections on the underside of the helicopter. Eventually long cords will connect to those and provide power to the two motors inside the copter. The pin holes in the light grey base of the gimbal will connect to the support structure that's yet to be built. Lego also had to cheat a bit and put a couple gears on the outside of the helicopter since there's not room inside for them. The drive system here: There's a motor in the cockpit. It has a small bush on it, connected to the large pulley via the red belt. That drives the bevel gears, which turn the two gears on the ouside of the chopper. That then drives the worm gear and then the 24 tooth gear in the gearbox, which finaly tilts the black frame of the gimbal side to side.