The \"Shuttle + 2\" is the most economical radio -controlled thermal helicopter, it is also the most sold in the world. It allows you to learn stationary flight and then evolve towards translation and acrobatic flight. All spare parts are available separately. Supplied with the O.S.37Sz-H engine and the Sanwa Aquila radio control, the necessary servos. The gyroscope is not understood and is to be acquired separately.