There is no need to apologize for calling attention to a video of a great piece of work. Some of us have seen it but enjoy seeing it again.

Even if viewers have no sentimental connection with the distant past they can appreciate how much fun could be had with so little in those days. Jim Walker's hovers and harriers were performed with only a 2-speed throttle. And, he was precise.

Today some people feel they need an expensive digital, high torque, high speed, coreless servo for throttle but it still sounds like they're using a 2-speed throttle while they are hovering.

Jim Walker was a great innovator with amazing drive and abilities.