❏
3. When the Stab is aligned with the Fuse,
draw light reference marks on the Stab to help
you accurately reposition it after the glue has
been applied.
❏
4. Apply 30-Minute Epoxy to the
Stab Saddle,
then lay the Stab in place. Apply a weight to hold
the Stab in position until the epoxy cures. Double-
check alignment before the epoxy kicks off.
❏
5. Hold the Fin on top of the Stab with the LE
in the notch at the top of F-8B. Refer to the plans
and you will see that the Fin TE is 1/8” forward
of the Stab TE notch (see photo at step 7). Mark
the bottom edge to show where fin sheeting
needs to be trimmed to allow a
flush fit
with the
Stab.
❏
6. Put the Fin in position and sight it from 6
to10 feet behind the model. If it is not vertical,
make adjustments to the bottom edge a little at a
time with fine sandpaper. When you are satisfied
with the fit, pin the Fin in position. Carefully
measure from the Fin tip to the Stab tips to
double check your “eyeball” method and to be
sure that your sanding is accurate.
❏
7. Mark the aft center of the Fin’s TE on the
Stab. This is where the Rudder Torque Rod will
exit the Stab. Mark the location of the fin prior to
removal for future realignment. Remove the Fin
from the Stab.
❏
8. Align the die-cut 1/8” ply
Fin Drill Guide
with the Fin center mark on the Stab as shown.
Carefully drill a
3/16” hole
through the Stab into
the rear of the fuse while keeping the drill bit
aligned with the Fin Drill Guide.
❏
9. Trim the threaded portion of the 1/8” bent
wire
Rudder Torque Rod
so that 5/8” of thread
remains. Screw the nylon Rudder Horn onto the
threaded end until flush with the end of
the threads.
❏
10. Insert the Rudder Torque Rod through the
hole in the Stab from inside the fuse. Try not to
damage the Stab as the Torque Rod exits the
hole. If satisfied with the fit and alignment,
remove the Rudder Torque Rod and roughen up
the surface of the plastic bearing tube with
100-grit sandpaper.
Coat the Torque Rod wire
with petroleum jelly
at both ends of the plastic
bearing tube. Coat the Plastic Bearing Tube with
6-Minute Epoxy, then reinsert it into the hole in
the Stab. The Plastic Bearing Tube should
protrude above the Stab about 1/16”.
NOTE: Before installing the Fin, we need to
finish up the pushrod hookups so that the
Fin won’t be in the way when you turn the
fuse upside down.
❏
11. Clean the aft ends of both wire pushrods
with steel wool. Clean the ends with alcohol.
Grip a pushrod with a pair of pliers, then push a
Coupling Sleeve
onto the wire halfway using
another pair of pliers. Do the same with the
other pushrod.
A=A
A
A
38
