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There are several reasons this wouldn't work, however. The main rotor disk of a heli is huge and generates a correspondingly huge amount of drag compared to an airplane prop. (If you think of the heli rotor disk as a big propellor, its actually pretty amazing that a tiny little .32 engine can turn it at all. There's about a 10:1 gear down from the engine to the main rotor, which makes it possible for the engine to turn the main rotor.) So, you have to have fairly fine control over the relationship between the collective pitch (and corresponding drag) and the throttle setting. If you get it wrong, the engine bogs badly or races wildly. Also, auto-rotation is an important maneuver, and this entails control of collective pitch while the throttle is set to idle. Finally, for inverted flight you want to have full throttle both at maximum up collective and maximum down collective.
What are the radio options?
Pitch curves and throttle curves: You can adjust the amount of servo travel at 0% stick, 25%, 50%, 75%, and 100%, both for throttle servo and collective servo. This feature is a must.
Throttle hold: Flip this switch to practice auto-rotation; the throttle is reduced to idle. All the other controls still work normally.
Idle up: This is an alternate mode, usually used for aerobatics. You can set throttle and pitch curves, mixes, etc., and change over to the different setup at altitude or whenever.
Programmable mixing: This neat feature lets you establish a relationship between channels. One channel is designated as the input or master channel. As the master channel varies, it causes small changes to the output channel. This is an advanced feature.
Revolution mixing: This feature causes increases in tail rotor as throttle and pitch increase. This is useful to compensate for the increased torque the engine produces. I feel that this is a somewhat over-rated feature, and that it only really comes into its own when you're doing aerobatics. Even then, a programmable mix may be better.
Electronic trim adjustment: similar to and augments mechanical trim
End point travel adjustment: sets where servos go at max stick displacement
Exponential: can be used to make cyclic less sensitive in midrange.
Can I use my airplane radio?
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