Interactive Helicopter in 3DS Max : Tutorial

In this tutorial, we will set up interactive controls that allow the animator flexibility to control the rotor speed of a helicopter. We will use float expressions and custom attributes to achieve this goal.
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[@Krisowski89]

Another drawback is that blades spin backwards, when you take down your speed parameter. So it's ok for take off, but wont do the landing in the same scene...

[@oudarbre]

thanks, interesting for the controls ! That's not a realistic rig in fact : rotor doesn't tilt and speed is quite constant, it's blades lift which is augmented generally, on a side or on the rear for the copter mouvement (and that's more tricky to rig... ^^)

[@beingmahasadashiva8957]

ohh common man, start from beginning at least..

[@VFXLtd]

Damn, you didnt start from scratch :( Project file please so we can reverse engineer it?

[@hamedsaffari2280]

Mathematics and wrong approach.
We need to control the timing not the rotation value!