Interesting. Capun's three Be2 aircraft add on models fly great, and do correct flat turns like almost all real aircraft can do.
In other words, when you step on the rudder and keep steping on the rudder and keep the airplane from rolling it still keeps turning just using rudder.
For the Be2s and the Albatros DV, this gives you the advantage to start turning quickly instead of waiting for the correctly slow roll rate to start you turning.
Good Job Capun!
