The answer that I wsa given fo the head button is in conjunction with the reason why some heli's have a underslung flybar. When owners fly invert they try to get as low to the ground as possible and a button will (help) prevent a crash if you touch the ground. As to why it would slow the blades down I would think that since the mass is centralized it wouldn't much effect in slowing down the head speed, If I am misguided in this assumption please let me know, I am also a noob. As to everybody else who responded to my crysacking, thank you for your words of encouragement. I created a training gear system out of oak quarter round door moulding it is realitivly heavy but makes the heli so stable (sluggish) that i can only hover a foot off the ground. Yaa the parts only cost 6 bucks and I learned how to solder.
thanks again, Seabee890