RE: Biplane Decalage
The set up on the 1/3 scale Jungmeister Im building is stab 0,bottom wing 0,top wing -1o .......and most of the reading I have done on the subject uses the same set up.
Im going to re check the incidence set up on my GP Christen Eagle as I suspect the top wing has no minus set up and might even be positive,which may cause the tendancy this design has to spring back into the air on any less than perfect landing.
The RC Guys 1/3 Pitts I am assembling also uses 0/0/-1 and the sample I flew lands like a dream and has no bad flight habits.