I like flying helicopters but using my TM Warthog didn't seem realistic enough. I looked online to buy a collective but none seemed to fit my pit, so I built my own. I wanted to build in a twist throttle on the grip like in a Huey. It proved to be difficult but I finally did it. It works great. I have a potentiometer for the twist throttle control and another Pot for the collective (lift the handle). I added two switches but haven't decided what to use them for as yet. I have a guide for moving the collective but haven't figured out a friction devise.