Rev 2.0 10/21/13
9
Tail Fin Installation
42. Temporarily place the wing in the saddle with the top and bottom fin in position.
Once you are happy with the fit of the both the bottom and top fin, mark the bottom fin
with a pencil along the fuselage outline. Remove the bottom fin and scuff the bottom
fin inside these lines. This will help the epoxy achieve a better bond.
43. Glue the bottom fin in place with 5-minute epoxy. Be careful not to glue the two
fins together as the top fin is designed to be removed.
NOTE: As the top fin is used to hold the wing in position it is important that you achieve
a snug fit between the upper wing surface and the bottom surface of the top tail. You
may need to carefully trim the corroplast to achieve best fit.
44. When the glue on the bottom tail is dry you can install the tail pin. The fuselage is
already pre-cut for the pin. Make sure the wing and tails are properly inserted and mark
the end of the tail pin with a black marker. While the marker is still wet you can push
the pin into the hole to transfer the mark to the top fin.
45. Remove the top fin and there should be a mark transferred from the pin. Use this
mark as a guide and drill a hole through the top fin with a 3/16 drill bit.
46. Insert the bamboo skewers into corrugations near the leading and trailing edge of
the fin. The goal is to add stiffness to the tail. Trim to fit.
NOTE: We recommend using light fiberglass, CA hinges or other thin material to glue
doublers on either side of the top fin where the tail pin hole is located. This will help
keep the hole from becoming enlarged over time.