thanks for the info on yasim. now i get something like this:

- Code: Select all
`Solution results: Iterations: 1058`

Drag Coefficient: 5.472822

Lift Ratio: 99.595795

Cruise AoA: -3.626069

Tail Incidence: 4.599699

Approach Elevator: -0.791674

CG: x:-2.952, y:-0.000, z:-0.045

Inertia tensor : 8288.054, -0.000, 921.072

[kg*m^2] -0.000, 10506.476, 0.000

Origo at CG 921.072, 0.000, 18355.416

the cg is a little aft .. but trying to bring it forward gets me in trouble with the solver right now.. still got a lot to tweak about the fdm.

my problem is that i get either too much elevator authority.. or too little.. can't seem to find that middle range

also.. can some one give a guestimate on the weight of a german 3bladed metalic prop cca. 1940 ('cause so far i couldn't find any data on that).