Wow, brings back many memories of planes I built, but never flew.
There are many, but since this is a C/L discussion, I'll limit my tall tails to those models in particular.
Early on was one of a hollow block fuselage 1/2A model from AHC (Puddle Jumper?), along with my first engine (an OK Cub .049) that I nearly wore out just flipping the prop a million times. Never did get the Puddle Jumper to fly, but the Cub .049 powered a Walker FireBaby, for my very first C/L flying experience. I taught several friends to fly with the FireBaby, before upgrading to a McCoy .049 diesel that was way too powerful, but so exciting (between O-ring changes). Mixed my own diesel fuel back then, which was very mild (equal parts of ether, kerosene, and Castor oil).
Next was a green box Nobler that was ready for covering when I got AF orders to transfer, and the movers managed to crush in transit. Never built another.
Followed by a Flight Streak that a friend offered to hand launch on it's maiden, and promptly threw against the ends of the lines with enough force to reverse it's direction, with the expected sad consequences. My last ever C/L flight.
Next was my third Fox 35 powered Ringmaster that was finished, covered, painted, and then sold to the fellow who hand launched my Flight Streak (I never learn). The Ringmaster taught his wife to fly, which was the only upside to that long ended friendship. I heard his wife left him some time later, so that was two of us who were disappointed.
Last, was my previous attempt to re-enter the C/L hobby with another 1/2A kit, the Sig Skyray. The completed airframe fell off the closet shelf, or was dropped by one of the grandkids who would never confess, and then scrapped.
Still have a Veco Tom Tom, and Sig Twister kit, and several suitable engines, but doubt I have the fortitude to finish either.
In between these disasters, were a Veco Tom Tom (flown with Mild Bill Dahlgren at Sembach Air Base Germany in the fifties), a couple of Ringmasters, a Shoestring or two, a Buster, and several others. Also flew a bunch of R/C airplanes later on, and still have several in the garage, that are only hours away from flight worthy.
Bill Dahlgren was flying a beautiful Half Fast, with the first OS engine I ever saw, and it was a spectacular flyer! The OS was a sign of things to come, and a worthy competitor to the Webras favored in Germany at the time.
Started serious stunt with a Fox 35 (Veco Tom Tom), but tried several McCoy and K&B stunt engines along the way. None of them ran, or lasted as long as the Fox 35, so I kept returning to my roots.
Bill Adair