This comparatively unknown duration model of uncertain provenance is nevertheless well worth considering for any future ‘Carlo Godel type’ event. According to the Contest KIts advertisement (below right), it gained second place in the S.M.A.E. Jetex Trophy contest of 1955, while the box top (right) claims an average duration of two minutes.
The kit was actually manufactured by E. Keil & Co., but neither the designer nor the date are specified on the (rather rudimentary) plan (below). It is a well-proportioned design (12" span by 13" long), but the motor is top-mounted quite forward of the CG without a pylon, so some modification for Rapier will be required. A 10% reduction for L-1 would be about right, unless it’s built very light. But be warned: Tom says choose very hard/strong wood for the fuselage as his broke very easily. The double sparred wing should be quite warp resistant.