The Simplex was designed by Paul Plecan and published in the February 1941 issue of Air Trails magazine. Paul reported that his original model was lost on the day it 's first day of flying. On its eleventh flight it flew Out-of-Sight in 33 minutes on a 15-sec. engine run. Hence, BMJR has provided provisions for a dethermalizer. The BMJR Simplex has a 30" span with 145 sq.in. of area. The model may be flown Free Flight in the SAM and FAC Old Time events. Flying weight of our .020 gas free flight is 4 1/2 oz. We have not flown this model with electric power.