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Goldberg Cub C. G. ????

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Goldberg Cub C. G. ????

Old 03-10-2010, 03:46 PM
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ES CONTROL
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Default 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 ?
Old 03-10-2010, 05:23 PM
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Lnewqban
 
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Default 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



Old 03-10-2010, 05:26 PM
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Insanemoondoggie
 
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Default 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.
Old 03-10-2010, 05:26 PM
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Default 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.
Old 03-10-2010, 09:03 PM
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Default RE: Goldberg Cub C. G. ????

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

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