RE: Adding weight for cg
I used nails, BB's, bolts, nuts and coins for balancing my aircraft in the past, when I tried to balance the aircraft- and had no GP lead on hand. It all worked just fine! I crashed a plane once and when the coins came out, my friend yelled "Jackpot!"
I wanted to kill him. [:@]
Now I try to avoid adding weight if I can by shifting the battery etc. But if I have to add weight, then I epoxy lead in the plane so if I crash, I won't be so embarrassed.
Pete