Goldberg Cub C. G. ????
 

I installed a 65 LA on a Cub that was given with no plans. I keep adding tail weight. not knowing where the C G is . Can someone help me?


Question # 2 - Should I install a 40 size engine ?<br type="_moz" />

RE: Goldberg Cub C. G. ????
 

Is this your model?

http://www3.towerhobbies.com/cgi-bin...?&I=LXYXF6&P=7

http://manuals.hobbico.com/gpm/gpma0963-manual.pdf

RE: Goldberg Cub C. G. ????
 

Plans show between the front egde and rear edge of the main spar. About 3 3/4 inches puts it in the middle of the CG. Instructions say to refer to plan for location.. Not listed in assm. manual.

RE: Goldberg Cub C. G. ????
 

Hi, the plans for the Goldberg Cub show the CG being in the middle of the main spar with a range of approx. +/-.25in.
Just an FYI, the instruction book refers to the plans for the CG.

As for a 40 size engine, I cant reccommend it. When I built mine many years ago I initailly used a 40. I was less than impressed with the setup and ended up getting a bigger engine. IMO stick with the 65.

Cheers.

RE: Goldberg Cub C. G. ????
 

Thank-you! I now have my CG at rear edge of main spar.