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Old 09-19-2018, 10:10 AM
  #85  
jetflyr
 
Join Date: Mar 2002
Location: Colorado Springs, CO
Posts: 749
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Originally Posted by TimD.
OK., I just got around to finishing mine up this week. Where did you guys figure your CG at. The online manual states 175mm back from intake lip . That is way off according to my calculations of the wing/fuse planform. I came in at 11 1/2"" - 285mm back. OR 4 "- 100mm in front of the rear spar / 1" - 25mm in front of the mains.

I will probably move it forward a bit more to be cautious for the first flight.
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The instruction book calls for 175mm back from the wing indentation (and handy-dandy panel line) - NOT the lip. Several other threads exist, and Bob Klenke had his at 185mm when we talked. I maidened at 185 and am moving it back (due to the amount of up elevator needed) as did he. I will try to pull the plane down tomorrow night (have a meeting until late tonight) and look at where you have it measured vs where I am now.

Greg