View LEGO instructions for Rescue Helicopter set number to help you build these LEGO sets. Set , released in , is the best helicopter ever released in the Technic line in my opinion. It’s big and it’s functional. This set is similar to a Sikorsky HH- Find great deals for Lego Technic Whirlwind Rescue (). Shop with confidence on eBay!.

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The nose gear retracts forward via a set of 14 tooth bevel gears. Click for an animation of the cyclic in motion.

Lego Technic Whirlwind Rescue () | eBay

This model pivots the entire rotor head instead. The next axle pivots a lift arm which deploys the winch boom. Click for an animation of the cable in motion. This flex cable attaches to a ball joint on the side of the swashplate.

Inside the swashplate is a four blade rotor part. Fore-aft motion of the stick pushes and pulls the cable using a ball joint. A set of 14 tooth bevel gears drive the second axle which works as a cable drum.

Instructions For LEGO 8856 Rescue Helicopter

Click for an animation of the winch boom deploying. Because of the shape 88856 the gear, the rotor can pivot on two axes while still rotating.


Click 8586 an animation of the rotors in motion. Rotors The rotors’ rotation is driven by an input crank on the left side. In both the extended and retracted positions the gear rests against a hard stop. The cable runs out to the winch and attaches to a metal hook. A pair of simulated turbine engines are nestled beneath the main rotor head. The main gear pivots forward via a 24 tooth crown and spur gear.

leto At the end of the axle is a ball joint which connects to another flex cable. Rotating main and tail rotor, ratcheting winch on deployable boom, retractable landing gear, working two axis cyclic. Here another set of 14 tooth bevel gears drives the 4 blade tail rotor. Each gear pivots a little over 90 degrees.

LEGO Technic Rettungshubschrauber () | eBay

If a real helicopter did this it would risk striking the rotor against the frame. Rescue Winch A pair of cranks on the starboard side operate the rescue winch on the port side. The rotor axle drives a spherical ball gear. The control of the cyclic is from a stick at the pilot’s position.

LEGO Technic Rettungshubschrauber (8856)

The spur gear drives an axle which runs both forward and aft. The second crank attaches to a 16 tooth spur gear used as a ratchet plate. The crank turns 88856 worm gear which mates with a 24 tooth spur gear. There is one flex cable and sleeve for each axis. The final gear ratio is Click the image to download the LDraw file of this model.


Lateral motion of the stick rotates an axle which runs aft. Ldraw file courtesy of Benjamin Wendl. The first crank turns a worm gear which drives a 16 tooth spur gear. The crank axle also drives a set or gears made up of a 24 tooth crown mating with two stacked 14 tooth bevel gears one of the rare places this pairing is made which passes torque along the length of the boom to the tail through 3 universal joints.

For example, the leading and trailing blades may be at 10 degrees of pitch, while the port and starboard blades are at 5 and 15 degrees respectively.

Click for an animation of the landing gear in motion. Model by Eric Albrecht. This crank drives a set of 14 tooth bevel gears giving the 8856 rotor a ratio of 1: Landing Gear The 3 point landing gear retracts using another crank on the port side. Cyclic Pitch A number of new parts made a simulated cyclic system possible.