Stabilising moments in Wenk's designs were provided by swept back wing-tips set with negative incidence relative to the rest of the main-plane.

[2] The glider built for the 1921 Rhön competition was a monoplane with a constant chord un-swept centre section extending to approx 2/3rds span with around 10 degrees dihedral.

Pulling back on the stick increased the negative incidence of the wing-tips giving a nose up moment and vice versa pushing the stick forward released the tension on the springs in the circuit allowing the tips to decrease incidence, giving a nose down moment.

The unusual method was unique in that the pilot had no direct control over the wing-tips relying on the incidence changing with the increase and release of tension in the springs.

[3] Despite the very brief career of the Weltensegler, it is very notable as the first glider to soar and gain height, marking the beginning of the sport of gliding[3]