Towerman June 6, 2021 11:29 PM Whooohoo ! ! Fun Fun FUN ! ! !All we now need is an order button below the write up :D Arcticshade June 6, 2021 11:55 PM The Tilting mechanism is to DROOL over, it's the perfect 2 rotor flying machine ! And like you say when battery performance increase we can make the rotors even smaller.OR keep the 90cm diameter motors and fly even further, i actually like the size of the rotors.""It's bulky, but looks surprisingly stable and controllable.""Bulky ? Martin Jetpack is bulky, not this thing ! eirobotix June 7, 2021 12:01 AM Nice job mate but please do your demos over water not land - nobody wants to see you seriously injured or worse....RIP Jetman Vincent Reffet :( kvncloete June 7, 2021 03:59 AM This is far to dangerous. Somebody is going to get hurt. Jet packs are compact and robust. Arcticshade June 7, 2021 05:04 AM Vincent did a backflip at 800ft and could not recover quickly enough as he was too low, that was the cause not an engine failure. Having said that, electric motors in any case are more reliable than turbine engines so i would say its definately safer to fly this twin motor. Yes i do agree test over water until full certification/confidence is developed.@KVNcloeteNo you have it backwards, Turbines are less robust, moreover, they have a lag in response time, Electric motors have instant power changes making for precise control. These are the basics ;) dan June 7, 2021 05:32 AM Great! That looks simply great! love it! Finally big (efficient) rotor diameter, ultra light/minimalistic design for a few minutes of FUN! Being so light, I guess it classifies as sport equipment and they can skip certification issues of other eVTOLs. Not sure if I flew with this invention over rocky ground, maybe safer over water. And I would have to go first on a severe diet before take-off... Michael son of Lester June 7, 2021 06:03 AM Very cool! I haven't been this excited about a flying machine since I watched the first Gen H4 flight video years ago. Weight-wise, I suspect that in the USA the Copterpack would be classed as an ultralight so no license would be required. Considering the quiet of the electric motors, if they could get the endurance time sorted out these would also be natural for special forces. Think, putting people on ships that have been hijacked or inserting special ops teams on top of buildings or into enemy-held hard to reach areas. So far as safety goes, I'm sure that if these come to market, it will be after all the bugs are worked out. Otherwise, the makers would face some serious court issues the first time a flyer came to earth the hard way. paul314 June 7, 2021 07:41 AM I'm not sure the safety issues can all be worked out. Those tiny shrouds avoid the really stupid prop accidents, but they won't contain much if something goes seriously wrong (or if the props ingest something.) But it's really cool and I totally want one... jerryd June 7, 2021 08:16 AM Will need a lot of training for most people and likely still not safe and missing a ballistic parachute.Far better would be 2 12' diameter rotors on the same center shaft to get 4x more lift/kw. It's also inherently stable and so efficient the Mars Helicopter used it. Edward Vix June 7, 2021 08:40 AM It looks like it wouldn't be too hard to stick your hand into the propellers. Or topple to the ground when landing and get your lower leg or a dog into the works. Not at all practical.