after a certain time test flight you can fly that thing very stable and precise in the apartment. But you should have enough space, because I still beginners war.Er has forgiven me a lot of crashes. To my tuning was a swash plate made of aluminum, making the whole more stable, the small Nubel are more stable and do not break the same. The rear engine goodbye even after some time, probably due to my crash. Because the very thin wiring the tail rotor was broken and no longer to solder. The new rear-engined I then tape pasted over so that the wiring can not break. I would recommend it as a beginner Heli repeatedly.
