The Cramcraft was a single-seat primary glider trainer, aimed at newcomers to the sport and designed with simplicity, robustness and low cost in mind rather than aerodynamic performance.
[2] It was a wooden aircraft with wings of rectangular planform built around two box spars which, like the ribs, were made from spruce and plywood.
[2] The tail surfaces were carried on a narrow, flat boom formed by two parallel beams from the wing leading edge, braced together and fabric covered.
[2] The rudder was mounted on a very narrow fin and initially extended further below the boom than above[2] but was later modified so that little projected below and the upper profile became more rounded.
The board was fixed to the wing spars by two pairs of parallel V-form lift struts, the angle between them being unusually small.