... However, the design is compatible with both electric (EP) and gas engine (GP) power sources. While ... /C System/ 4-channel, 4-servo + 1ESC (EP)/4-channel, 5-servo (GP) for airplanes400-500W class ... (GP) Technical Data Length1,125mmWidth1,300mmWeight2,050g approx.(EP) / 2,000g approx.(GP)Motor400-500W class ... separately)Wing Area29.6dm2Wing Load67.6-69.3g/dm2 approx.Wing Typesimilar to Original Clark ...