Centre of Gravity (cg)
This is the price I have to pay: 4.5 grams of lead granules. They will go to the tip of nose, together with a generous dab of epoxy, to make up for the steel rod steering linkage of tail feathers.
This the Light version of the Flitzebogen 2. Some of these take off at slim 220 grams. Mine ends up at 235 grams with the cg at 70 mm. Additional 1.5 m of 0.5 steel rod in polystyrene tube and the big 350 mAh battery take their toll.