Top Flite TOPA0150 - Manual (Page 34)

❏ ❏
R12. Fill-in the notches in ribs 4 and 5 below the
landing gear rails with leftover balsa. Sand the balsa to
match the ribs so that it supports the bottom sheeting.
❏ ❏
F21. Position the LG assembly between the
LG rails in the wing. Drill six 3/32” holes through
the LG plate into the rails. Remove the plate and
enlarge the holes in the plate only with a 5/32”
drill bit. Temporarily mount the assembly to the
wing with six #6 x 1/2” screws.
❏ ❏
F20. Drill six 3/32" holes through the fixed
landing gear plate and the grooved mount where
shown on the plan. Enlarge the holes
in the plate
only with a 1/8" drill bit. Mount the plate to the
grooved mount with six #4 x 1/2" screws.
❏ ❏
F18. Chamfer the opening of the hole to
accommodate the bend in the landing gear wire.
Test fit one of the 3/16"
landing gear wires into
the landing gear mount and torque block.
❏ ❏
F19. Test fit the die-cut 1/8" plywood fixed
landing gear plate to the landing gear wire and
the grooved mount. If necessary, lengthen the slot
in the gear plate, so it can be centered,
lengthwise, on the grooved mount.
❏ ❏
F16. Use 30-minute epoxy to securely glue the
3/4" x 3/4" x 7/16" maple torque block to one end
of the top of the 3" grooved landing gear mount.
❏ ❏
F17. Drill a 3/16" hole through the groove in
the landing gear mount and the torque block 3/8"
from the end. This hole should be perpendicular
to the bottom surface of the landing gear mount
(for the most accuracy, use a drill press if you
have one, or borrow a friend’s). For easier
installation of the landing gear, you could enlarge
the hole with a #10 drill bit.
❏ ❏
F15. Test fit, then use 30-minute epoxy to
glue the die-cut 1/8" plywood forward and aft
landing gear webs into position. When you
position the webs, be certain they are not pushing
up against the inside of the top wing sheeting,
thereby making a bump in the top of the wing.
Refer to this photo for the following three steps.
❏ ❏
F13. Test fit the 1/4" plywood forward and
aft landing gear rails in the slots in ribs W-4 and
W-5. If necessary, make adjustments to the
notches or remove glue bumps so the rails fit well.
❏ ❏
F14. Once you have achieved a good fit of the
rails, use 30-minute epoxy to glue them into position.
Do not build up large fillets of glue at this time.
Perform steps F13 through F25 only if you are
building fixed gear.
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