Lemke elected a relatively thick profile developed in 1967 by University of Stuttgart Professor Franz Xavier Wortmann, the FX 67-K-170, which offered the structural economy made possible by a tall spar - an important consideration as glass fibre was still the only affordable reinforcement material - as well as good performance for the time.
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The wings, almost entirely made of Carbon fibre Reinforced Plastic, were manufactured at the Rolladen-Schneider factory in Egelsbach in mid-2001, while the span extensions were built in the moulds developed by the Darmstadt group for the D41.
It originally made rolling doors and shutters and was run by Willi and Walter Schneider based in Egelsbach near Frankfurt, Germany.
A safety cockpit was developed for the -c variant with additional glass, carbon and aramid reinforcements, following crash tests carried out in-house by Wolf Lemke anticipating later TÜV Rheinland crashworthiness recommendations.
The aircraft was designed especially for the 1970 World Gliding Championships at Marfa, Texas, where J. Wroblewski took 2nd and F. Kępka took 3rd places in the Standard Class behind a Rolladen-Schneider LS1.