No need for a Gyro in any fixed wing model.. it only teaches you to be lazy... if you cant 3D without a gyro... practise or give up... practise is usually the best thing.... I would appreciate a gyro during inverted harriers looking at the top side.. i keep using the theory that's used when flying the model towards oneself, thus making it go wrong.. nearly got it perfected to a point that i'll bring it really low now.