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Making the rotor head


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making the main body

making the swashplate

making the rotor head

making the cyclic control system

making the tail rotor

installing the servo

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an introduction to electronic components

building an airborne video system

flybarless CP modification I

flybarless CP modification II

brushless modification

lithium cells

making your own blades

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technical data

photo gallery

video page

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For the rotor head, I choose the same material as the main body - the circuit board. First of all, I have to claim that the rotor head must be sturdy enough to withstand any vibration or it could be very dangerous.

The control system I used here is the Hiller system. In this simple control system, the cyclic controls are transmitted from the servos to the flybar only and the main blade cyclic pitch is controlled by the flybar tilt only.

The first step is to make the middle part:

It is actually a 3mm collar which can be fit into the main shaft. A 1.6mm bar is inserted horizontally into the collar. The above unit makes the rotor head movable in one direction.

There are two holes just above the collar which is used to, as you can see, house the flybar. All the parts that I used was first fixed together by instant glue. They are then fixed firmly by tiny screws (1mm*4mm) as shown below. In addition, I add epoxy adhesive. The rotor head will spinning at very high speed. Never overlook the potential for causing injury this little machine has if anything got loose. Safety is paramount!

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Ben Hui - web master    2002