★ Vol2 Structure edition →    • Contra rotating propellers in ENYA60X...  
☆ Click here for Unit 2 →    • Contra rotating propellers (号機) in O...  
☆ (New work) Click here for the new No. 3 machine →    • Contra rotating Propellers(3号機)   OS ...  
★　What is Contra?♪♪ In modern civilized society, electric models are rapidly evolving, but there are no enginepowered Contras in model airplanes. Regardless of the trends of the times, as an ``engine geek?'' I feel lonely. The idea is to make the propeller fly at 10,000 revolutions, so it's a lot of trouble, but I have no choice but to try making it myself (^^;.