RE: U Can Do 3D as a trainer?
I have to agree with the pro ucd as a first plane or trainer if you will. Plain and simply put the UCD 46 is twice as easy to fly and land than a high wing trainer w/ dihedral. The stall tendencies on my UCD are phenominal. It creeps in for landings and doesn't think of tipping. I tried the same thing with my superstar select and about 10 feet off the ground it dropped like a rock. Also rolls and loops were sucky on the trainer. I had to compensate with down elevator to keep from losing too much altitude on rolls with my trainer. Basically the trainers don't "Want" to roll....they just want to float. It was darn near impossible to come in on landings because it didn't want to descend (Dihedral). Then if you came in too slow....boom you stall. With the UCD you can water it down so the throws are like that of a trainer and the plane in my opinion is tons more stable than any trainer I've flown. Maybe the issue isn't whether the ucd is a good trainer or not. Maybe the real issue is that trainers shoul not have Dihedral. It just doesn't make good sense to have an airplane fight the natural tendencies that an airplane should have. Either get an inexpensive trainer and take out the Dihedral or go for it with the UCD.