Hello,

I have re-opened today this issue again, after I played with some better developed YASim aircrafts like MD 81 to find out what is the issue behind the bad crosswind behavior of my Dornier 328TP- project, and a lot of other aircraft. (couldn't test all of course....)

Especially I tested the MD81 by Gary Neely after I read his very good YASim tutorials. 

Gary Neely MD81, gross weight 157503 lb
Location: Edwards base KEDW, RWY 15
Weather: 08025KT 12SM  20/08 Q1013 NOSIG

Takeoff behavior: as soon I reach >110-120ktn the aircraft will drift into the wind.
Landing behavior: I noticed that even this aircraft will drift away as soon the nose gear will touch down with wind speeds about more than 20ktn and wind from left
Crosswind limitation for the real thing is 30ktn on dry runways. (http://www.hilmerby.com/md80/md_basic.html) 
No problems with wind from right, even with much higher wind speeds- and that's exactly what makes we wonder.

now the 777-200ER,  gross weight: 574595 lb
Location: Edwards base KEDW, RWY 15
Weather: 08025KT 12SM  20/08 Q1013 NOSIG


 Takeoff behavior: Flaps 15: as soon I reach >110-120ktn the aircraft will drift into the wind as well. (Vr: 130ktn) 
                             Flaps 5: as soon I reach >110-120ktn the aircraft will drift into the wind as well. (Vr: 130ktn)  
Landing behavior:  I noticed that even this aircraft will drift away as soon the nose gear will touch down with wind speeds about more than 20ktn and wind from left as well 
 Crosswind limitation for the real thing is about 40ktn on dry runways. (http://www.pprune.org/archive/index.php/t-285471.html)  

So, I'm sure the problem isn't solved. No idea where the cause of this problem could be- I'm not sure if it is really the aircraft configuration...

Kind regards
HHS