Sawadee 74 r/c sportsman 4/76, munninghoff 12 $ 17.00 26369 55d6 x x sb2c helldiver: 54 profile sport/stunter for .35/.40 nov. 1989 11 $ 15.00 00634 x x x. Model steam engine plans – updated new plans . elmer’s engines – the most popular plans for home made steam engines . other model steam engines – a collection of live steam engine plans and compressed air engine plans with a sprinkling of model steam boat plans. A radio-controlled aircraft (often called rc aircraft or rc plane) is a small flying machine that is controlled remotely by an operator on the ground using a hand-held radio transmitter..