ok i have a 2 meter sailplane and there were no instructions that came with this. very common in sailplanes. at least with good sailplanes. ok the wing span is 210mm but narrows at the tip. meaning not equal to the tips. so i figured apx 53mm would be the point this is figuring 25%. to go at 1/3rd % would be 72mm. i spoke with someone else who has one and was told 92mm is the cg. how can i figure this exactly?? any help?????
