14
❏ ❏
4. Without using any glue, install fi ve hinges into
the rudder. Note that the pivot point of each hinge must
align with the center of the leading edge. To achieve
this alignment, the hinges will be fairly deep in the
rudder. Also note that the hinges must be perpendicular
to the leading edge.
❏ ❏
5. Again without glue, test fi t the rudder to the fi n.
Move it left and right a few times to align the hinges.
The rudder doesn’t have to move very far, only 2"
[50.8mm] left and 2" [50.8mm] right measured at the
widest part of the rudder at the trailing edge. If there
is too much resistance, or if you are not able to move
the rudder left and right 2" [50.8mm], widen the gap
slightly between the rudder and the fi n.
❏ ❏
6. Remove the rudder and all the hinges. Add a
small drop of oil to the pivot point on the hinges. This
will prevent the epoxy from adhering to the pivot point.
Make sure oil does not get on the gluing surface of the
hinge. If it does, clean the oil off with a paper towel
square dampened with denatured alcohol.
❏ ❏
7. Mix up approximately 1/4 oz. [7.4cc] of
30-minute epoxy. Use a toothpick to thoroughly apply
the epoxy in the holes in the fi n and rudder. Use the
toothpick to get the epoxy out of the opening of the
holes in the rudder and fi n so it doesn’t get into the
hinge pin. Wipe away any excess epoxy around the
outside of the holes with a couple of the small paper
towel squares dampened with denatured alcohol.
❏ ❏
8. Use the toothpick to apply epoxy to the ends
of the rudder hinges that go into the fi n. Insert each
hinge into the fi n and wipe away any excess epoxy
that squeezes out of the hole.
❏ ❏
9. Apply epoxy to the other end of the hinges.
Join the rudder to the fi n, pushing the hinges only
about 3/4 of the way into the rudder. Use a toothpick
to wipe away any epoxy that squeezes out. Then, fi t
the rudder the rest of the way in.
❏ ❏
10. Move the rudder left and right a few times
to align the hinges and make certain that the rudder
defl ects left and right enough. Use a small piece of
masking tape to hold the tip of the rudder in alignment
with the tip of the fi n. Allow the epoxy to fully cure.
MOUNT THE RETRACTABLE TAIL GEAR
❏
1. Remove the steering arm from the Robart
#160LWC retractable tail gear assembly (not included).
File a fl at spot near the top of the shaft for the set
screw in the steering arm to lock onto. Re-install the
steering arm on the shaft with a drop of threadlocker
and the set screw.
❏
2. File another fl at spot near the bottom of the
shaft for one of the set screws in the strut. Tighten
both set screws with a drop of threadlocker on each.
Be certain the steering arm and the axle in the strut
remain parallel with each other. Make adjustments to
the fl at spots if necessary.
❏
3. Enlarge the hole through the 1-3/4" [44mm] tail
wheel with a #9 [5mm] drill. Cut the axle included with
the Robart retractable tail gear to the correct length,
then fi le a fl at spot on it and mount it to the strut.
