i finished my twinstar assembly today, cant setup the aileron differential properly on my dx7, both ailerons are woking in the normal directions but the downward movement is more  than the upward movement, can any body have ideas on this..

santhosh

see if this is helpful
http://www.horizonhobby.com/Articles/Article.aspx?ArticleID=1798

there are two pdf's on this page
http://www.horizonhobby.com/ProdInfo/Articles/1798-system.pdf
http://www.horizonhobby.com/ProdInfo/Articles/1798-function.pdf

Did this get resolved, or are you still looking for a solution ?

BTW, the issue would typically be caused by incorrect mechanical setup (one linkage rod longer than other etc).  Have you verified this first ?  If the servos are centered and the linkages are correct, this issue should largely be avoided.

nothing was wrong  with the servos and control linkages, i tried programming the radio many times aftr clearing the channel memory.now it's ok ,  don't know how it happened
santhosh