Fins

Fins

Fins guide a rocket once it is moving fast enough for the air moving across the fin surfaces to steer the rocket.  Fins can be made of balsa wood, plywood, or plastic, and can be mounted on the surface of the airframe, or through the wall of the airframe with a tab secured to the motor mount inside the airframe.  Fins can also take the form of tube fins or ring fins, which also provide guidance, although they produce more drag than traditional fins.

  • Plywood through the wall fin for 29mm motor tube in BT-80 body tube

    Rocketry Works

    Custom Plywood Fins

    $3.99
    Rocketry Works can cut your plywood fins for you!  Simply upload your fin pattern and an optional logo file, and we can cut your fins to your specifications!  Fin size is limited to plywood material in 8x8 inch or 12x6 inch sections, and work...
    RW-CUSTOM-FIN
  • Plywood through the wall fin for 29mm motor tube in BT-80 body tube Plywood through the wall fin for 29mm motor tube in BT-80 body tube, shown in a mid power version of the Maxi Alpha 3

    Rocketry Works

    Plywood Swept Fins TTW fits 29mm in BT-80 (Set of 3)

    $8.99
    Save yourself the trouble of cutting your own plywood fins with thee sturdy through-the-wall (TTW) 1/8 inch thick laser cut plywood fins. The swept shape fins are a clone of the Estes Maxi Alpha 3 fins, and in fact, these form the foundation of an...
    RW-29MM-BT-80-TTW-3MM-SWEPT-FIN
  • Plywood Trapezoidal Fins TTW fits 29mm in BT-70

    Rocketry Works

    Plywood Trapezoidal Fins TTW fits 29mm in BT-70 (Set of 3)

    $7.99
    Save yourself the trouble of cutting your own plywood fins with thee sturdy through-the-wall (TTW) 1/8 inch thick laser cut plywood fins. The trapezoidal shape fins resist breakage on landing better than any other type of fin, since they are tucked up...
    RW-29MM-BT-70-TTW-3MM-TRAP-FIN