Rave 450 Electric Helicopter Kit - ND-YR-K001 Introducing the new Rave 450 sized electric helicopter designed by Curtis Youngblood and Next D Designs (A division of CJ Youngblood Enterprises). This helicopter features an all metal head, high quality parts, carbon fiber u-frame design, tube driven tail and can run either 325mm or 350mm main blades in its stock form.