Atomic SZ2 Shaft Drive AWD 1 28 Racing Chassis Kit (No Elecrtronic) T Rex 450 We have created a blade We have created a blade which has optimum aerodynamic capability by having a constant drag factor over the entire blade length which by design has increased efficiency dramatically (test runs in the wind tunnel have proved a drag reduction of 30% has been achieved) 5" (1333mm) Heli Height Flybarless 17" (432mm) Rotor Span 1561 1601mm 690 730mm Blades Tail Rotor Span 286mm with 105mm T R Blades Avg 0mm thick carbon fiber chassis plate SZ2 features a center differential between the front and rear axles to compensate for the different wheel speeds between the axles from different cornering radii