working on details for a scratch jet project. it will look like the bvm bobcat or yellow stingray. a symetrical swept wing as is most jets. and a fuse center section that when viewed from top view will look alot like a delta wing plane with intragal rudders outboard of the fuse center line about 6 inches to each side. total of two rudders with elevator between like a ov10 bronco.. hope you get the picture.

how can i get a safe starting point on the cg and not sacrafice a turbine trying it out.