It's been 30 some odd years, but I used to fly an electric park flyer, and a gas HobbyZone Easy 80, my main hobby was racing 1/10th scale rally cars. I always loved flying, but never got good enough at it to turn it into anything other than a diversion. I helped an old friend build a 10ft SR-71, with two of those turbojets, never saw it fly though

My friend died before maiden flight, and his widow sold all the stuff.