Would love to hear more about what your building, and how your builiding yours, JettStar.
I just received the info booklet and video for the Challenger, so look forward to that.
I can tell you, there's NO way I would attempt to fly one of these, or any other one for that matter, without some training. I imagine it would hurt plowing one of these into the earth, even if only at 100'.
I'll know more as I get into it a little further. I do think you have to have ground/flight training, and a medical if you go with a 2 seater.
Thanks,
Gary