Trex 700E aero fin

thingiverse

This is a tail fin for a modified Align Trex 700E helicopter. The fin is part of the landing gear, and therefore it has to be longer than the original (for ground clearance) and stiffer laterally to reduce wobbles on spoolup. You can modify the fin's size, angle, etc. to some extent by editing the parameters in the *trex_fin.scad* file and re-generating the STL file in OpenSCAD.