E-flite J-3 Cub 25 ARF - Manual (Page 47)

Center of Gravity / Battery Installation
An important part of preparing the aircraft for
flight is properly balancing the model.
Caution: Do not inadvertently skip this step!
The recommended Center of Gravity (CG) location
for the J-3 Cub is 2
5 /
8
" (66mm) back from the leading
edge. The range for the Center of Gravity is
2
1
/
2
"–2 3
/
4
".(63mm–70mm) behind the leading edge.
47