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General control line discussion => Open Forum => Topic started by: Joe Yau on August 01, 2011, 01:26:22 PM

Title: LO-CG limits..?
Post by: Joe Yau on August 01, 2011, 01:26:22 PM

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   :o then everything just clicked! it tracks perfectly.   But isn't that too far forward?  (number wise)

Thanks in advance.

Title: Re: LO-CG limits..?
Post by: Tim Wescott on August 01, 2011, 01:29:22 PM

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?

Title: Re: LO-CG limits..?
Post by: Joe Yau on August 01, 2011, 01:43:23 PM

Quote from: Tim Wescott on August 01, 2011, 01:29:22 PM

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.