Which RC Helicopter Receiver
There are as many as 12 channel radio controled RC helicopters that could not only run 2D but 3D as well. However, a lot of people call 3 channel helicopter a "true" 3D flying machine while they are not really 3D flying. They are close but not there yet. A 3D flying machine must not only flying the the X, Y and Z cordinates but also has to fly XY, YZ or XZ cordinates. By puting X, Y, Z, you can only get a box, in order to get a sphere, you need more cordniates.
A 3 channel helicopter can only do, up, down, left, right, forward and backward. It really depends on the quality of your helicopter, sometimes it is not that easy to control 3 channel because they are less sensitive in terms of X, Y and Z cordinates.
On the other hand, flying a 6 channel helicopter is quiter easier and quite simpler. When we talk about the 12 channel, it is basicly having the ability to add X, Y, Z into the XY, YZ, XZs and that makes the double of the cordinates.
The number of channels a transmitter has determines the number of individual things on the aircraft that can be controlled. For example, one channel for throttle, one channel for up / down, one channel for pitching forward / backward, one for banking left / right and another for yaw. This is the case with a helicopter, where 5 channels are required for flight.
6 channels is not seen as enough channels for a nitro Helicopter.
3 cyclic
1 throttle
2 gyro
1 gov
3 cyclic
1 throttle
2 gyro
1 gov
BUT if you are into mild 3D you could go with no governor or you could manually adjust the gyro to save on the cost of a 7 channel setup.
