Spinning the 2160
Have flown a Robin 2160 for >100 acro flights and hundreds of spins, and strongly disagree with the statement that there are spin issues. Have flown inverted in a wide range of mounts from Buecker to Extra, and there are very few acro aircraft with a more benign behaviour in all attitudes. Perfect training aircraft! Spins with more than 20 rotations, all directions: no difference to 3 rotations, very stable, very predictable recovery (except that the engine quits after about 6-10 turns). Full stick back, with or without power: no spin without kicking the rudder. Pull back in steep turns and in most cases, the wings will rather level than spin. Snaps are very predictable and you even have to keep the stick fully aft to keep rotating. On the other end, rolling circles in Robin are a true pain and you need a lot of biceps - so it's ok for sportsman level but no more. Wing spar issue: to my knowledge, the wing spar issue was only found in very few examples which were kept outside all the time on airfileds near the sea. Do that with a citabria and you run into problems!