RE: CG on Sig Mini Smith biplane????
hi
my experience with the miniplane was very disappointing. it is a terrible flyer. hope you have better luck with yours than I did with mine, ended up giving it to another club member.
a good starting point would be to put wings on plane and measure from the leading edge of the top wing to the trailing edge of the bottom wing and balance at 25% of this distance. this will put you at a good starting point with maybe minor adjustment and you get the plane trimmed.
good luck and happy flying
pt19 flyer