LO-CG limits..?

[Joe Yau]

Just wondering what are the limits?   I was told 1.25" LO center behind the CG is a good start. but what is strange was.. On my TF Score having it at 3/4" was not flying well till its at .25" behind the CG    then everything just clicked! it tracks perfectly.   But isn't that too far forward?  (number wise)

Thanks in advance.

[Tim Wescott]

It's certainly odd.  You could run Line III on this and probably get that 1-1/4" number.

LO position is 'right' when the plane's yaw is as close to right as can be in both level flight and overhead.  Are you sure that you don't have a warp someplace (like, in the rudder) that is causing some yaw?

[Joe Yau]

It's certainly odd.  Are you sure that you don't have a warp someplace (like, in the rudder) that is causing some yaw?

 I've checked and have rechecked.  then I even removed the 2 degree (stock) of engine off-set. so, it was at zero, and the rudder is also zero.