CG on an Anniversary Eddition Piper Cub - RC Groups
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Apr 08, 2005, 10:32 PM
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CG on an Anniversary Eddition Piper Cub

I bought a Cub at the flea market the other day but it didn't come with plans.It did come with the instruction book and it says check the plans for the proper cg.It's a Carl Goldberg kit.It came with a K&B 60 Sportster (I think) quite heavy, but still the plane seems tail heavy.Any Ideas? Tks Dave
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Apr 13, 2005, 12:53 PM
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CG on Goldberg Cub

Measure the wing chord, leading edge to trailing edge.

Multiply this dimension by 25% and 30%

Mark these 2 locations on the bottom of the wing measured back from the leading edge.

This is the CG "range". It should balance somewhere between these 2 places.

If not, shift battery, receiver, etc. or add lead to get it to balance withing the range.

Dick Pettit
Associate Editor
R/C REPORT Magazine

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