Yeah, that first video is great. Check the date. More than five years ago. Now check the latest Cyclone Mark 5 engine video: [yt]gF066FmT5p4[/yt] That one is from February. They both have a Cyclone engine making noise. The second one shows shots of a shaft turning. Not much progress after five years of work, don't you think? If you want a real challenge, try to find a video of a Cyclone engine actually powering something.