DY8971SRTF Dynam Primo with Gyro 1450mm (57') Wingspan - (Ready-To-Fly) - RTF - DY8971SRTF This is the new Stabilized Ready-To-Fly version. This model comes with the Detrum MSR66A 6CH 2.4Ghz Mini Receiver with iStone 6-Axis Gyro/ABS built in for auto-stabilization and recovery. For more information on the MSR66A. The Dynam Primo with its giant tundra wheels is a great high wing trainer molded after the super cubs the gifted bush pilots of Alaska might use where taking off and landing in less-than-ideal runways is a way of life. Needless to say, this is a trainer that can accommodate virtually any flying surface you may require. And what bush pilot would ever dare such treacherous runways without flaps? The Dynam Primo includes working flaps to minimize your takeoff roll and landing roll out if space is a concern. Chutti tv all programs list.