This helicopter can go up, down, left, and right.
It also has the unique ability to hover in place due to a perfect weight and bottom propellers.
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Step 1: The Frame
Build 3 columns from thermal squares 3 blocks high. Space them 1 block apart. Connect them at the top with 2 metal squares
Step 2: The Engines
Ad the strongest engine types at the top and bottom of each column.
Step 3: Springs
Add 4 springs between the columns. These add weight for stable hovering.
Step 4: Lift
Add two large propellers on the top of the left and right columns, an place the smaller ones between them.
Step 5: Steering and Hovering Propellers
Place one small propeller on each side for steering. Add a small propeller at the bottom of each propeller. When these are activated it will balance out the lift and the helicopter will fly in place.
Step 6: Add the Pig and Fly
After adding the pig take the new vehicle for a fly. Turn on all propellers and it will fly in place. Turn on he top ones only for lift. Use the side propellers to steer.